Publications, Dissertations, Patents

Publications 2017

  • A. Marberger, D. Ferri, M. Elsener, A. Sagar, C. Artner, K. Schermanz, O. Kröcher, Relationship between structures and activities of supported metal vanadates for the selective catalytic reduction of NO by NH3, Appl. Catal. B 2017, 218, 731-742. doi: 10.1016/j.apcatb.2017.06.061
  • C.J. Baranowski, A.M. Bahmanpour, O. Kröcher, Catalytic synthesis of polyoxymethylene dimethyl ethers (OME): A review, Appl. Catal. B 2017, 217, 407-420. doi: 10.1016/j.apcatb.2017.06.007
  • V. Marchionni, D. Ferri, O. Kröcher, A. Wokaun, Increasing the sensitivity to short-lived species in a modulated excitation experiment, Anal. Chem. 2017, 89, 5801–5809. doi: 10.1021/acs.analchem.6b04939
  • P. Steiger, R. Delmelle, D. Foppiano, L. Holzer, A. Heel, M. Nachtegaal, O. Kröcher, D. Ferri, Stable Ni particles through structural reversibility in La-Fe-Ni perovskite type metal oxide catalysts, ChemSusChem 2017, 10, 2505–2517. doi: 10.1002/cssc.201700358
  • M. Sridhar, D. Ferri, J.A. van Bokhoven, O. Kröcher, Water-assisted oxygen activation during gold-catalyzed formic acid decomposition under SCR-relevant conditions, JCAT 2017, 349, 197-207. doi: 10.1016/j.jcat.2017.01.006
  • A. Petrov, D. Ferri, M. Tarik, O. Kröcher, J. van Bokhoven, Deactivation Aspects of Methane Oxidation Catalysts Based on Palladium and ZSM-5, Top. Catal. 2017, 60(1), 123-130. doi:10.1007/s11244-016-0724-6
  • V. Marchionni, A. Kambolis, M. Nachtegaal, O. Kröcher, D Ferri, High energy X-ray diffraction and IR spectroscopy of Pt/Al2O3 during CO oxidation in a novel catalytic reactor cell, Catal. Struct. React. 2017, 3, 71-78. doi:10.1080/2055074X.2016.1274118
  • R. Pereniguez, A. Caballero, D. Ferri, Preferential oxidation of CO on a La-Co-Ru perovskite-type oxide catalyst, Catal. Commun. 2017, 92, 75-79. doi:10.1016/j.catcom.2016.12.020

Publications 2016

  • M.A. Newton, D. Ferri, G. Smolentsev, V. Marchionni, M. Nachtegaal, Kinetic studies of the Pt carbonate-mediated, room-temperature oxidation of carbon monoxide by oxygen over Pt/Al2O3 using combined, time-resolved XAFS, DRIFTS, and mass spectrometry, J. Amer. Chem. Soc. 2016, 138, 13930-13940. doi:10.1021/jacs.6b06819
  • V. Marchionni, J. Szlachetko, M. Nachtegaal, A. Kambolis, O. Kröcher, D. Ferri, An operando emission spectroscopy study of Pt/Al2O3 and Pt/CeO2/Al2O3, PCCP 2016, 18, 29268-29277. doi: 10.1039/C6CP05992A
  • A. Marberger, D. Ferri, M. Elsener, O. Kröcher, The significance of Lewis acid sites for the selective catalytic reduction of nitric oxide on vanadium-based catalysts, Angew. Chemie Int. Ed. 2016, 55, 11989-11994. doi: 10.1002/anie.201605397
  • M. Zeifang, O. Kröcher, Kompetenzen bündeln von der Forschung bis zum Markt - Das Bioenergie-Center SCCER BIOSWEET, Aqua&Gas 2016, 7/8, 24-26. Link
  • D. Burnat, R. Kontic, L. Holzer, P. Steiger, D. Ferri, A. Heel, Smart material concept: reversible microstructural self-regeneration for catalytic applications, J. Mater. Chem. A 2016, 4, 11939-11948. doi: 10.1039/c6ta03417a
  • O. Martin, C. Mondelli, A. Cervellino, D. Ferri, C. Douilly, D. Curulla-Ferré, J. Pérez-Ramirez, Operando synchrotron X-ray powder diffraction and modulated-excitation infrared spectroscopy elucidate the CO2 promotion on a commercial methanol synthesis catalyst, Angew. Chemie Int. Ed. 2016, 55, 11031-11036. doi: 10.1002/anie.201603204
  • S. Campisi, D. Ferri, A. Villa, W. Wang, D. Wang, O. Kröcher, L. Prati, Selectivity Control in Palladium Catalyzed Alcohol Oxidation Through Selective Blocking of Active Sites, J. Phys. Chem. C 2016, 120, 14027-14033. doi: 10.1021/acs.jpcc.6b01549
  • V. Marchionni, M. Nachtegaal, A. Petrov, O. Kröcher, D. Ferri, Operando XAS study of the influence of CO and NO on methane oxidation by Pd/Al2O3, J. Phys.: Conf. Series 2016, 712, 012051. doi: 10.1088/1742-6596/712/1/012051
  • F. Pilger, A. Testino, A. Carino, C. Proff, A. Kambolis, A. Cervellino, C. Ludwig, Size control of Pt clusters on CeO2 nanoparticles via an incorporation–segregation mechanism and study of segregation kinetics, ACS Catal. 2016, 6, 3688-3699. doi: 10.1021/acscatal.6b00934
  • T. Baidya, P. Bera, O. Kröcher, O. V. Safonova, P. Abdala, B. Gerke, R. Poettgen, K. R. Priolkar, T. K. Mandal, Understanding the anomalous behavior of the Vegard’s law in Ce1−xMxO2(M = Sn and Ti; 0 < x ≤ 0.5) solid solutions, Phys. Chem. Chem. Phys. 2016, 18, 13974-13983. doi: 10.1039/C6CP01525E
  • M.A. Lucchini, A. Testino, A. Kambolis, C. Proff, C. Ludwig, Sintering and coking resistant core-shell microporous silica - nickel nanoparticles for CO methanation: towards advanced catalysts production, Appl. Catal. B: Environmental 2016, 182, 94. doi: 10.1016/j.apcatb.2015.09.012
  • D. Ferri, A. Heel, D. Burnat, Aerosol spray synthesis of powder perovskite-type oxides, in Perovskites and Related Mixed Oxides: Concepts and Applications, Eds. Granger P., Parvulescu V.I., Kaliaguine S., Prellier W., 1st Edition, Wiley-VCH Verlag GmbH & Co. KGaA, 2016, p. 69. Link

Publications 2015

  • A. Kampolis, T. Schildhauer, O. Kröcher, CO Methanation for Synthetic Natural Gas Production, Chimia 2015, 69, 608-613. doi: 10.2533/chimia.2015.608
  • O. Kröcher, SCCER BIOSWEET – The Swiss Competence Center for Energy Research on Bioenergy, Chimia 2015, 69, 569. Link
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    Special CHIMIA issue about the SCCER BIOSWEET, October 2015:
  • M.A. Newton, D. Ferri, G. Smolentsev, V. Marchionni, M. Nachtegaal, Room-temperature carbon monoxide oxidation by oxygen over Pt/Al2O3 mediated by reactive platinum carbonates, Nature Commun., 2015, 6. doi:10.1038/ncomms9675
  • A. Kambolis, D. Ferri, Y. Lu, S.N. Yannopoulos, S. Pokrant, D. Rentsch, O. Kröcher, Structural modification of Ni/γ-Al2O3 with Boron for enhanced carbon resistance during CO methanation, ChemCatChem 2015, 7, 3261. doi:10.1002/cctc.201500567
  • A. Marberger, M. Elsener, D. Ferri, O. Kröcher, VOx Surface Coverage Optimization of V2O5/WO3-TiO2 SCR Catalysts by Variation of the V Loading and by Aging, Catalysts 2015, 5, 1704-1720. doi: 10.3390/catal5041704
  • F. Pilger, A. Testino, A. Kambolis, M. Tarik, A. Schuler, C. Ludwig, One-pot polyol synthesis of Au/TiO2, Pt/CeO2, and Au/CeO2 nanopowders and their catalytic activities, J. Nanosci. Nanotechnol. 2015, 15, 3530. doi: 10.1166/jnn.2015.9861
  • Y. Lu, S. Keav, A.E. Maegli, A. Weidenkaff, D. Ferri, Pd loading and structure of flame-made Pd/YFeO3±d, Top. Catal. 2015, 58, 910. doi:10.1007/s11244-015-0459-9
  • A. Spiteri, P. Dimopoulos-Eggenschwiler, Y. Liao, G. Wigley, K.A. Michalow-Mauke, M. Elsener, O. Kröcher, K. Boulouchos, Comparative analysis on the performance of pressure and air-assisted urea injection for selective catalytic reduction of NOx, Fuel 2015, 161, 269–277. doi: 10.1016/j.fuel.2015.08.061
  • T.J. Schildhauer, M. Elsener, J. Moser, I. Begsteiger, D. Chatterjee, K. Rusch, O. Kröcher, Measurement of Vanadium Emissions from SCR Catalysts by ICP-OES: Method Development and First Results, Emiss. Control Sci. Technol. 2015, 1, 292-297. doi: 10.1007/s40825-015-0023-x
  • A. Borgschulte, E. Callini, N. Stadie, Y. Arroyo, M. Rossell, R. Erni, J.J.C Geerlings, A. Züttel, D. Ferri, Manipulating the reaction path of the CO2 hydrogenation reaction in molecular sieves, Catal. Sci. Technol. 2015, 5, 4613-4621. doi:10.1039/c5cy00528k
  • A. Villa, D. Ferri, S. Campisi, C.E. Chan-Thaw, Y. Lu, O. Kröcher, L. Prati, Operando attenuated total reflectance FTIR spectroscopy: Studies on the different selectivity observed in benzyl alcohol oxidation, ChemCatChem 2015, 7, 2534-2541. doi: 10.1002/cctc.201500432
  • K.A. Michalow-Mauke, Y. Lu, K. Kowalski, T. Graule, M. Nachtegaal, O. Kröcher, D. Ferri, Flame-made WO3/CeOx-TiO2 catalysts for selective catalytic reduction of NOx by NH3, ACS Catalysis 2015, 5, 5657–5672. doi: 10.1021/acscatal.5b01580
  • M. Sridhar, D. Ferri, M. Elsener, J.A. van Bokhoven, O. Kröcher, Promotion of ammonium formate and formic acid decomposition over Au/TiO2 by support basicity under SCR-relevant conditions, ACS Catalysis 2015, 5, 4772-4782. doi: 10.1021/acscatal.5b01057
  • A. Marberger, M. Elsener, D. Ferri, A. Sagar, K. Schermanz, O. Kröcher, Generation of NH3-SCR active catalysts from decomposition of supported FeVO4, ACS Catalysis 2015, 5, 4180-4188. doi: 10.1021/acscatal.5b00738
  • K.A. Michalow-Mauke, Y. Lu, D. Ferri, T. Graule, K. Kowalski, M. Elsener, O. Kröcher, WO3/CeO2/TiO2 Catalysts for Selective Catalytic Reduction of NOx by NH3: Effect of the Synthesis Method, Chimia 2015, 69, 220-224. doi: 10.2533/chimia.2015.220
  • G.L. Chiarello, D. Ferri, Modulated excitation extended X-ray absorption fine structure spectroscopy, PCCP 2015, 17, 10579. doi: 10.1039/c5cp00609k
  • J. Zarfl, D. Ferri, T.J. Schildhauer, J. Wambach, A. Wokaun, DRIFTS study of a commercial Ni/gamma-Al2O3 CO methanation catalyst, Appl. Catal. A: General 2015, 495, 104. doi: 10.1016/j.apcata.2015.02.005

Publications 2014

  • M. Sridhar, J. van Bokhoven, O. Kröcher, Effect of ammonia on the decomposition of ammonium formate over Au/TiO2 under oxidizing conditions relevant to SCR: Enhancement of formic acid decomposition rate and CO2 production, Appl. Catal. A 2014, 486, 219-229. doi: 10.1016/j.apcata.2014.08.034.
  • G.L. Chiarello, M. Nachtegaal, L. Quaroni, V. Marchionni, D. Ferri, Adding diffuse reflectance infrared Fourier transform spectroscopy capability to extended x-ray-absorption fine structure in a new cell to study solid catalysts in combination with a modulation approach, Rev. Sci. Instrum. 2014, 85, 074102. doi: 10.1063/1.4890668
  • D. Ferri, M.A. Newton, M. Di Michiel, G.L. Chiarello, S. Yoon, Y. Lu, J. Andrieux, Revealing the dynamic structure of complex solid catalysts using modulated excitation X-ray diffraction, Angew. Chemie Int. Ed. 2014, 53, 8890. doi: 10.1002/anie.201403094
  • D.Peitz, A.Bernhard, O.Kröcher, Ammonia Storage and Release in SCR Systems for Mobile Applications, in I. Nova, E. Tronconi (Eds.), Urea-SCR Technology for deNOx After Treatment of Diesel Exhausts, Springer, New York, ISBN 978-1-4899-8070-0, 2014, pp. 485 - 501. doi: 10.1007/978-1-4899-8071-7
  • Y. Lu, S. Keav, V. Marchionni, G.L. Chiarello, A. Pappacena, M. Di Michiel, M.A. Newton, A. Weidenkaff, D. Ferri, Ageing induced improvement of methane oxidation activity of Pd/YFeO3, Catal. Sci. Technol. 2014, 4, 2687. doi: 10.1039/C4CY00289J
  • M. Sridhar, D. Peitz, J. van Bokhoven, O. Kröcher, Ammonium formate decomposition over Au/TiO2: A unique case of preferential selectivity against NH3 oxidation, Chem. Commun. 2014, 50 (53), 6998. doi: 10.1039/C4CC00196F
  • M.A. Lucchini, A. Testino, C. Ludwig, A. Kambolis, M. El Kazzi, A. Cervellino, P. Riani, F. Canepa, Continuous synthesis of nickel nanopowders: characterization, process optimization, and catalytic properties, Appl. Catal. B: Environmental 2014, 156-157, 404. doi: 10.1166/jnn.2015.9861
  • V. Marchionni, M.A. Newton, A. Kambolis, S.K. Matam, A. Weidenkaff, D. Ferri, A modulated excitation ED-EXAFS/DRIFTS study of hydrothermal ageing of Rh/Al2O3, Catal. Today 2014, 229, 80. doi:10.1016/j.cattod.2013.10.082
  • O. Kröcher, M. Elsener, M.-R. Bothien, W. Dölling, Pre-Turbo Scr - Influence of Pressure on NOx Reduction, MTZ Worldw 2014, 75, 46-51. doi: 10.1007/s38313-014-0140-x
  • Y. Lu, K. Michalow, S.K. Matam, A. Winkler, A.E. Maegli, S. Yoon, A. Heel, A. Weidenkaff, D. Ferri, Methane abatement under stoichiometric conditions on perovskite-supported Palladium catalysts prepared by flame spray synthesis, Appl. Catal. B: Environmental 2014, 144, 631. doi: 10.1016/j.apcatb.2013.08.001
  • S. Keav, Y. Lu, S.K. Matam, A.E. Maegli, A. Heel, A. Weidenkaff, D. Ferri, Cr-induced deactivation of a commercial honeycomb noble metal-based CO oxidation catalyst, Appl. Catal. A: General 2014, 469, 259. doi: 10.1016/j.apcata.2013.10.005

Publications 2013

  • J. Szlachetko, D. Ferri, V. Marchionni, A. Kambolis, O.V. Safonova, Ch.J. Milne, O. Kröcher, M. Nachtegaal, J. Sa, Sub-second and in situ chemical speciation of Pt/Al2O3 during oxidation-reduction cycles monitored by high-energy resolution off-resonant X-ray spectroscopy, JACS 2013, 135, 19071-19074. doi: 10.1021/ja410146c
  • Y. Lu, S.K. Matam, G.L. Chiarello, P. Dimopoulos, C. Bach, M. Weilenmann, A. Spiteri, A. Weidenkaff, D. Ferri, Operando XANES study of simulated transient cycles on Pd-only three-way catalyst, Catal. Commun. 2013, 39, 55. doi: 10.1016/j.catcom.2013.05.006
  • D. Ferri, M.A. Newton, M. Di Michiel, S. Yoon, G.L. Chiarello, V. Marchionni, S.K. Matam, A. Weidenkaff, F. Wen, J. Gieshoff, Synchrotron hard X-ray methods coupled to phase sensitive analysis to characterize aging of solid catalysts with enhanced sensitivity, PCCP 2013, 15, 8629. doi: 10.1039/c3cp44638g
  • T. Baidya, P. Bera, B.D. Mukri, S.K. Parida, O. Kröcher, M. Elsener, M.S. Hegde, DRIFTS studies on CO and NO adsorption and NO + CO reaction over Pd2+-substituted CeO2 and Ce0.75Sn0.25O2 catalysts, J. Catal. 2013, 303, 117-129. doi: 10.1016/j.jcat.2013.03.020
  • D. Peitz, A.M. Bernhard, M. Mehring, M. Elsener, O. Kröcher, Harnstoffhydrolyse für die selektive katalytische Reduktion von NOx: Vergleich der Flüssig- und Gasphasenzersetzung, Chem. Ing. Tech. 2013, 85(5), 625-631. doi: 10.1002/cite.201200183
  • F. Vogel, P. Heusser, O. Kröcher, Mit Hochdruck Biomasse zu Methan umsetzen, Aqua&Gas 2013, 4, 30-35. http://www.aquaetgas.ch
  • M. Mehring, M. Elsener, O. Kröcher, Diesel Soot Catalyzes the Selective Catalytic Reduction of NOx with NH3, Topics Catal. 2013, 56, 440-445. doi: 10.1007/s11244-013-9993-5
  • A.M. Bernhard, D. Peitz, M. Elsener, O. Kröcher, Quantification of Gaseous Urea by FT-IR Spectroscopy and Its Application in Catalytic Urea Thermolysis, Topics Catal. 2013, 56, 130-133. doi: 10.1007/s11244-013-9941-4
  • D. Peitz, A.M. Bernhard, M. Elsener, O. Kröcher, Liquid-Phase Catalytic Decomposition of Novel Ammonia Precursor Solutions for the Selective Catalytic Reduction of NOx, Topics Catal. 2013, 56, 19-22. doi: 10.1007/s11244-013-9922-7
  • T. Baidya, A. Bernhard, M. Elsener, O. Kröcher, Hydrothermally Stable WO3/ZrO2–Ce0.6Zr0.4O2 Catalyst for the Selective Catalytic Reduction of NO with NH3, Topics Catal. 2013, 56, 23-28. doi: 10.1007/s11244-013-9923-6
  • A.M. Bernhard, D. Peitz, M. Elsener, T. Schildhauer, O. Kröcher, Catalytic urea hydrolysis in the selective catalytic reduction of NOx: Catalyst screening and kinetics on anatase TiO2 and ZrO2, Catal. Sci. Technol. 2013, 3(4), 942-951. doi: 10.1039/C2CY20668D
    CoverIssue CST 2013.jpeg
    This article is illustrated by the cover of Catalysis Science & Technology, April 2013:
  • L. Sharifian, Y.M. Wright, K. Boulouchos, M. Elsener, O. Kröcher, Calibration of a model for selective catalytic reduction with ammonia, including NO oxidation, and simulation of NOx reduction over an Fe-zeolite catalyst under highly transient conditions, Int. J. Eng. Res. 2013, 149, 107-121. doi: 10.1177/1468087412437825
  • I. Czekaj, S. Brandenberger, O. Kröcher, Theoretical studies on the stabilization of iron complexes in the ZSM-5 frame, Micropor. Mesopor. Mater. 2013, 169, 97-102. doi: 10.1016/j.micromeso.2012.10.018
  • A.M. Bernhard, I. Czekaj, M. Elsener, O. Kröcher, Adsorption and catalytic thermolysis of gaseous urea on anatase TiO2 studied by HPLC analysis, DRIFT spectroscopy and DFT calculations, Appl. Catal. B 2013, 134-135, 316-323. doi: 10.1016/j.apcatb.2013.01.009

Publications 2012

  • S. Brandenberger, O. Kröcher, Active sites, deactivation and stabilization of Fe-ZSM-5 for the selective catalytic reduction (SCR) of NO with NH3, Chimia 2012, 66, 687-693. doi: 10.1007/s38313-012-0243-1
  • Ch. Gerhart, B. Schulz, O. Kröcher, D. Peitz, E. Jacob, Selective Catalytic Reduction of Nitrogen Oxide — Part 1: Formates as Ammonia Storage Compounds, MTZ Worldw 2012, 73, 60-66. doi: 10.2533/chimia.2012.687
  • M. Mehring, M. Elsener, O. Kröcher, Selective catalytic reduction of NOx with ammonia over soot, ACS Catalysis 2012, 2, 1507-1518. doi: 10.1021/cs300184q
  • Ch. Gerhart, H.-P. Krimmer, B. Hammer, B. Schulz, O. Kröcher, D. Peitz, Th. Sattelmayer, P. Toshev, G. Wachtmeister, A. Heubuch, E. Jacob, Development of a 3rd Generation SCR NH3-Direct Dosing System for Highly Efficient DeNOx, SAE Technical Paper Series 2012-01-1078. doi: 10.4271/2012-01-1078
  • A.M. Bernhard, D. Peitz, M. Elsener, A. Wokaun, O. Kröcher, Hydrolysis and thermolysis of urea and its decomposition byproducts biuret, cyanuric acid and melamine over anatase TiO2, Appl. Catal. B 2012, 115-116, 129-137. doi: 10.1016/j.apcatb.2011.12.013
  • T.J. Schildhauer, M. Elsener, O. Kröcher, J. Moser, I. Begsteiger, D. Chatterjee, K. Rusch, Measurement of vanadium emissions from SCR catalysts: Method development and temperature dependency, Proc. 7th International Exhaust Gas and Particulate Emissions Forum, 6-7 March 2012, Ludwigsburg (Germany), pp. 123-131.
  • A. Heubuch, G. Wachtmeister, P. Toshev, Th. Sattelmayer, D. Peitz, O. Kröcher, C. Gerhart, B. Schulz, R. Brunner, E. Jacob, Neue Verfahren zur Ammoniakbereitstellung und Messung für die SCR-Anwendung, Wissenschaftsymposium Automobiltechnik, 21-22 March 2012, Braunschweig (Germany).

Publications 2011

  • M. Mehring, M. Elsener, O. Kröcher, Micro-analytics and reactivity of diesel particulate matter, MTZ Worldw 2011, 72, 52-59. doi: 10.1365/s38313-011-0090-5
  • D. Peitz, A. Bernhard, M. Elsener, O. Kröcher, Laboratory test reactor for the investigation of liquid reducing agents in the selective catalytic reduction of NOx, Rev. Sci. Inst. 2011, 82, 084101. doi: 10.1063/1.3617463
  • L. Sharifian, Y. M. Wright, K. Boulouchos, M. Elsener, O. Kröcher, Transient simulation of NOx reduction over a Fe-Zeolite catalyst in an NH3-SCR system and study of the performance under different operating conditions, SAE Int. J. Fuels Lubr. 2011, 5, 370-379. SAE Technical Paper Series 2011-01-2084. doi: 10.4271/2011-01-2084
  • E. Rohart, O. Kröcher, M. Casapu, R. Marques, D. Harris, C. Jones, Acidic Zirconia Mixed Oxides for NH3-SCR Catalysts for PC and HD Applications, SAE Technical Paper Series 2011-01-1327. doi: 10.4271/2011-01-1327
  • S. Brandenberger, O. Kröcher, A. Tissler, R. Althoff, Effect of Structural and Preparation Parameters on the Activity and Hydrothermal Stability of Metal-Exchanged ZSM-5 in the Selective Catalytic Reduction of NO by NH3, Ind. Eng. Chem. Res. 2011, 50, 4308-4319. doi: 10.1021/ie101771e.
  • A.M. Bernhard, I. Czekaj, M. Elsener, A. Wokaun, O. Kröcher, Evaporation of Urea at Atmospheric Pressure, J. Phys. Chem. A 2011, 115, 2581-2589. doi: 10.1021/jp112066m
  • M. Casapu, A. Bernhard, D. Peitz, M. Mehring, M. Elsener, O. Kröcher, A Niobia-Ceria based multi-purpose catalyst for selective catalytic reduction of NOx, urea hydrolysis and soot oxidation in diesel exhaust, Appl. Catal. B 2011, 103, 79-84. doi: 10.1016/j.apcatb.2011.01.011.
  • M. Mehring, M. Elsener, O. Kröcher, Development of a TG-FTIR system for investigations with condensable and corrosive gases, J. Therm. Anal. Calorim. 2011, 105, 545–552. doi: 10.1007/s10973-010-1178-x
  • T. Todorova, D. Peitz, O. Kröcher, A. Wokaun, B. Delley, Guanidinium Formate Decomposition on the (101) TiO2-Anatase Surface: Combined Minimum Energy Reaction Pathway Calculations and Temperature-Programmed Decomposition Experiments, J. Phys. Chem. C 2011, 115 (4), 1195–1203. doi: 10.1021/jp106523b
  • S. Brandenberger, M. Casapu, O. Kröcher, A. Tissler, R. Althoff, Hydrothermal deactivation of Fe-ZSM-5 catalysts for the selective catalytic reduction of NO with NH3, Appl. Catal. B 2011, 101, 649–659. doi: 10.1016/j.apcatb.2010.11.006

Publications 2001-2010

  • L. Sharifian, Y. M. Wright, K. Boulouchos, M. Elsener, O. Kröcher, Simulation of NOx reduction in an ammonia-SCR system with a Fe-zeolite catalyst and calibration of related parameters, Proceedings of the ASME Conference 2010, IMECE2010-40431.
  • M. Casapu, O. Kröcher, M. Mehring, M. Nachtegaal, C. Borca, M. Harfouche, D. Grolimund, Characterization of Nb-Containing MnOx-CeO2 Catalyst for Low-Temperature Selective Catalytic Reduction of NO with NH3, J. Phys. Chem. C 2010, 114 (21), 9791–9801. doi: 10.1021/jp911861q.
  • O. Kröcher, M. Elsener, M. Mehring, A. Bernhard, Hochentwickelte Thermoanalyse-Verfahren zur Charakterisierung von Russ und Ablagerungen in Harnstoff-SCR-Systemen / Highly developed thermal analysis methods for the characterization of soot and urea SCR systems, Proceedings of the 6th International Exhaust Gas and Particulate Emissions Forum, 9-10 March 2010, Ludwigsburg (Germany), pp. 148-159. Link
  • S. Brandenberger, O. Kröcher, A. Tissler, R. Althoff, The determination of the activities of different iron species in Fe-ZSM-5 for SCR of NO by NH3, Appl. Catal. B 2010, 95, 348-357. doi: 10.1016/j.apcatb.2010.01.013
  • S. Brandenberger, O. Kröcher, A. Tissler, R. Althoff, Estimation of the fractions of different nuclear iron species in uniformly metal-exchanged Fe-ZSM-5 samples based on a Poisson distribution, Appl. Catal. A 2010, 373, 168-175. doi: 10.1016/j.apcata.2009.11.012
  • O. Kröcher, M. Elsener, M. Votsmeier, Determination of effective diffusion coefficients through the walls of coated diesel particulate filters, Ind. Eng. Chem. Res. 2009, 48 (23), 10746–10750. doi: 10.1021/ie901269v
  • S. Brandenberger, O. Kröcher, A. Wokaun, A. Tissler, R. Althoff, The role of Bronsted-acidity in the selective catalytic reduction of NO with ammonia over Fe-ZSM-5, J. Catal. 2009, 268, 297-306. doi: 10.1016/j.jcat.2009.09.028
  • I. Czekaj, J. Wambach, O. Kröcher, Modelling Catalyst Surfaces Using DFT Cluster Calculations, Int. J. Mol. Sci. 2009, 10, 4310-4329. doi: 10.3390/ijms10104310
  • O. Kröcher, M. Widmer, M. Elsener, D. Rothe, Adsorption and Desorption of SOx on Diesel Oxidation Catalysts, Ind. Eng. Chem. Res. 2009, 48, 9847–9857. doi: 10.1021/ie900882p
  • I. Czekaj, O. Kröcher, Decomposition of Urea in the SCR Process: Combination of DFT Calculations and Experimental Results on the Catalytic Hydrolysis of Isocyanic Acid on TiO2 and Al2O3, Top. Catal. 2009, 52, 1740-1745. doi: 10.1007/s11244-009-9344-8
  • T. Todorova, O. Kröcher, B. Delley, DFT study of structural and vibrational properties of guanidinium derivatives, Theochem 2009, 907, 16-21. doi: 10.1016/j.theochem.2009.04.017
  • O. Kröcher, M. Elsener, Materials for thermohydrolysis of urea in a fluidized bed, Chem. Eng. J. 2009, 152, 167-176. doi: 10.1016/j.cej.2009.04.030
  • M. Casapu, O. Kröcher, M. Elsener, Screening of doped MnOx-CeO2 catalysts for low-temperature NO-SCR, Appl. Catal. B 2009, 88, 413-419. doi: 10.1016/j.apcatb.2008.10.014
  • O. Kröcher, M. Elsener, E. Jacob, A model gas study of ammonium formate, methanamide and guanidinium formate as alternative ammonia precursor compounds for the selective catalytic reduction of nitrogen oxides in diesel exhaust gas, Appl. Catal. B 2009, 88, 66-82. doi: 10.1016/j.apcatb.2008.09.027
  • O. Kröcher, M. Elsener, Combination of V2O5/WO3-TiO2, Fe-ZSM5, and Cu-ZSM5 catalysts for the selective catalytic reduction of nitric oxide with ammonia, Ind. Eng. Chem. Res. 2008, 47, 8588–8593. doi: 10.1021/ie800951a
  • S. Brandenberger, O. Kröcher, A. Tissler, R. Althoff, The state of the art in selective catalytic reduction of NOx by ammonia using metal-exchanged zeolite catalysts, Catal. Rev. Sci. Eng. 2008, 50, 492-531. doi: 10.1080/01614940802480122
  • I. Czekaj, O. Kröcher, G. Piazzesi, DFT Calculations, DRIFT Spectroscopy and Kinetic Studies on the Hydrolysis of Isocyanic Acid on the TiO2-Anatase (101) Surface, J. Mol. Catal. A 2008, 280, 68-80. doi: 10.1016/j.molcata.2007.10.027
  • D. Nicosia, I. Czekaj, O. Kröcher, Chemical deactivation of V2O5/WO3-TiO2 SCR catalysts by additives and impurities from fuels, lubrication oils, and urea solution: Part II. Characterization study of the effect of alkali and alkaline earth metals, Appl. Catal. B 2008, 77, 228-236. doi: 10.1016/j.apcatb.2007.07.032
  • O. Kröcher, M. Elsener, Chemical deactivation of V2O5/WO3-TiO2 SCR catalysts by additives and impurities from fuels, lubrication oils, and urea solution - I. Catalytic Studies, Appl. Catal. B 2008, 75, 215-227. doi: 10.1016/j.apcatb.2007.04.021
  • O. Kröcher, M. Elsener, E. Jacob, Neue Reduktionsmittel für die Low NOx-SCR-Technik / New reducing agents for the low-NOx SCR technology, Proceedings of the 5th International Exhaust Gas and Particulate Emissions Forum, 19-20 February 2008, Ludwigsburg (Germany), pp. 98-119. Link
  • O. Kröcher, Aspects of catalyst development for mobile urea-SCR systems - from vanadia-titania catalysts to metal-exchanged zeolites, Stud. Surf. Sci. Catal. 2007, 171, 261-289. doi: 10.1016/S0167-2991(07)80210-2
  • D. Nicosia, M. Elsener, O. Kröcher, P. Jansohn, Basic investigation of the chemical deactivation of V2O5/WO3-TiO2 SCR catalysts by potassium, calcium, and phosphate, Topics Catal. 2007, 42-43, 333-336. doi: 10.1007/s11244-007-0200-4
  • G. Piazzesi, D.Nicosia, M. Devadas, O. Kröcher, M. Elsener, A. Wokaun, Investigation of HNCO adsorption and hydrolysis on Fe-ZSM5, Catal. Lett. 2007, 115, 33-39. doi: 10.1007/s10562-007-9072-2
  • O. Kröcher, M. Elsener, Ammonia measurement with a pH electrode in the ammonia/urea-SCR process, Meas. Sci. Technol. 2007, 18, 771-778. doi: 10.1088/0957-0233/18/3/029
  • M. Devadas, O. Kröcher, M. Elsener, A. Wokaun, G. Mitrikas, N. Söger, M. Pfeifer, Y. Demel, L. Mussmann, Characterization and catalytic investigation of Fe-ZSM5 for urea-SCR, Catal. Today 2007, 119, 137-144. doi: 10.1016/j.cattod.2006.08.018
  • O. Kröcher, New challenges for urea-SCR systems: From vanadia-based to zeolite-based SCR catalysts, 1st Conference: MinNOx - Minimization of NOx Emissions through Exhaust Aftertreatment, 1-2 February 2007, Berlin (Germany).
  • I. Czekaj, G. Piazzesi, O. Kröcher, A. Wokaun, DFT modeling of the hydrolysis of isocyanic acid over the TiO2 anatase (1 0 1) surface: Adsorption of HNCO species, Surf. Sci. 2006, 600, 5158-5167. doi: 10.1016/j.susc.2006.08.037
  • M. Devadas, O. Kröcher, M. Elsener, A. Wokaun, N. Söger, M. Pfeifer, Y. Demel, L. Mussmann, Influence of NO2 on the selective catalytic reduction of NO with ammonia over Fe-ZSM5, Appl. Catal. B 2006, 67, 187-196. doi: 10.1016/j.apcatb.2006.04.015
  • K. Tikhomirov, O. Kröcher, M. Elsener, M. Widmer, A. Wokaun, Manganese based materials for diesel exhaust SO2 traps, Appl. Catal. B 2006, 67, 160-167. doi: 10.1016/j.apcatb.2006.03.025
  • K. Tikhomirov, O. Kröcher, A. Wokaun, Influence of potassium doping on the activity and the sulfur poisoning resistance of soot oxidation catalysts, Catal. Lett. 2006, 109, 49-53. doi: 10.1007/s10562-006-0055-5
  • O. Kröcher, M. Devadas, M. Elsener, A. Wokaun, N. Söger, M. Pfeifer, Y. Demel, L. Mussmann, Investigation of the selective catalytic reduction of NO by NH3 on Fe-ZSM5 monolith catalysts, Appl. Catal. B 2006, 66, 208-216. doi: 10.1016/j.apcatb.2006.03.012
  • G. Piazzesi, M. Elsener, O. Kröcher, A. Wokaun, Influence of NO2 on the hydrolysis of isocyanic acid over TiO2, Appl. Catal. B 2006, 65, 169-174. doi: 10.1016/j.apcatb.2006.01.002
  • G. Piazzesi, M. Devadas, O. Kröcher, M. Elsener, A. Wokaun, Isocyanic acid hydrolysis over Fe-ZSM5 in urea-SCR, Catal. Commun. 2006, 7, 600-603. doi: 10.1016/j.catcom.2006.01.022
  • G. Piazzesi, O. Kröcher, M. Elsener, A. Wokaun, Adsorption and hydrolysis of isocyanic acid on TiO2, Appl. Catal. B 2006, 65, 55-61. doi: 10.1016/j.apcatb.2005.12.018
  • K. Tikhomirov, O. Kröcher, M. Elsener, A. Wokaun, MnOx-CeO2 mixed oxides for the low-temperature oxidation of diesel soot, Appl. Catal. B 2006, 64, 72-78. doi: 10.1016/j.apcatb.2005.11.003
  • M. Devadas, O. Kröcher, A. Wokaun, Catalytic investigation of Fe-ZSM5 in the selective catalytic reduction of NOx with NH3, React. Kin. Catal. Lett. 2005, 86 (2), 347-354. doi: 10.1007/s11144-005-0331-1
  • O. Kröcher, M. Elsener, M. Koebel, An ammonia and isocyanic acid measuring method for soot containing exhaust gases, Anal. Chim. Acta 2005, 537, 393-400. doi: 10.1016/j.aca.2004.12.082
  • O. Kröcher, Aus der Forschung in die Praxis: Saubere Dieselmotoren dank Stickoxid-Umwandlung mit Harnstoff, Vjschr. Naturf. Ges. Zürich 2005, 150/1-2, 49-50.
  • J. Despres, M. Elsener, M. Koebel, O. Kröcher, B. Schnyder, A. Wokaun, Catalytic oxidation of nitrogen monoxide over Pt/SiO2, Appl. Catal. B 2004, 50, 73-82. doi: 10.1016/j.apcatb.2003.12.020
  • M. Koebel, M. Elsener, O. Kröcher, Ch. Schär, R. Röthlisberger, F. Jaussi, M. Mangold, NOx Reduction in the Exhaust of Mobile Heavy-Duty Diesel Engines by Urea-SCR, Topics Catal. 2004, 30/31, 43-48. doi: 10.1023/B:TOCA.0000029726.38961.2b
  • C. M. Schär, C. Onder, M. Elsener, H. Geering, Model-Based Control of an SCR System for a Mobile Application, Proceedings of the FISITA 2004 World Automotive Congress.
  • C. M. Schär, C. Onder, H. Geering, M. Elsener, Modelling and control of an SCR system, Proceedings of the IFAC Symposium on Advances in Automotive Control AAC04.
  • C. M. Schär, C. H. Onder, H. P. Geering, M. Elsener, Control of a Urea SCR Catalytic Converter System for a Mobile Heavy Duty Diesel Engine, SAE Technical Paper Series 2003-01-0776. Link
  • J. Despres, M. Koebel, O. Kröcher, M. Elsener, A. Wokaun, Storage of NO2 on BaO/TiO2 and the influence of NO, Appl. Catal. B 2003, 43, 389-395. doi: 10.1016/S0926-3373(03)00004-3
  • M. Koebel, E. O. Strutz, Thermal and Hydrolytic Decomposition of Urea for Automotive Selective Catalytic Reduction Systems: Thermochemical and Practical Aspects, Ind. Eng. Chem. Res. 2003, 42, 2093-2100. doi: 10.1021/ie020950o
  • J. Despres, M. Koebel, O. Kröcher, M. Elsener, A. Wokaun, Adsorption and desorption of NO and NO2 on Cu-ZSM-5, Micropor. Mesopor. Mater. 2003, 58, 175-183. doi: 10.1016/S1387-1811(02)00627-3
  • M. Elsener, H. P. Geering, F. Jaussi, M. Koebel, O. Kröcher, M. Mangold, Ch. Onder, R. Röthlisberger, Ch. Schär, Development and evaluation of a DeNOx system based on urea SCR, MTZ Worldw 2003, 64, 28-31. doi: 10.1007/BF03227633
  • NOx katalytisch reduzieren, auto&technik 2003, 3, 22-23.
  • G. Madia, M. Koebel, M. Elsener, A. Wokaun, The Effect of an Oxidation Precatalyst on the NOx Reduction by Ammonia SCR, Ind. Eng. Chem. Res. 2002, 41, 3512-3517. doi: 10.1021/ie0200555
  • G. Madia, M. Elsener, M. Koebel, F. Raimondi, A. Wokaun, Thermal stability of vanadia-tungsta-titania catalysts in the SCR process, Appl. Catal. B 2002, 39, 181-190. doi: 10.1016/S0926-3373(02)00099-1
  • G. Madia, M. Koebel, M. Elsener, A. Wokaun, Side Reactions in the Selective Catalytic Reduction of NOx with Various NO2 Fractions, Ind. Eng. Chem. Res. 2002, 41, 4008-4015. doi: 10.1021/ie020054c
  • M. Koebel, G. Madia, F. Raimondi, A. Wokaun, Enhanced Reoxidation of Vanadia by NO2 in the Fast SCR Reaction, J. Catal. 2002, 209, 159-165. doi: 10.1006/jcat.2002.3624
  • C. M. Schär, M. Elsener, C. Onder, H. Geering, Control Strategies for the DeNOx System of a Mobile Application, Proceedings of the FISITA 2002 World Automotive Congress, Helsinki, 2002.
  • M. Koebel, M. Elsener, G. Madia, Recent Advances in the Development of Urea-SCR for Automotive Applications, SAE Technical Paper Series 2001-01-3625. doi: 10.4271/2001-01-3625
  • M. Koebel, M. Elsener, G. Madia, Reaction Pathways in the Selective Catalytic Reduction Process with NO and NO2 at Low Temperatures, Ind. Eng. Chem. Res. 2001, 40, 52-59. doi: 10.1021/ie000551y
  • M. Koebel, M. Elsener, G. Madia, NOx-Verminderung in Dieselabgasen mit Harnstoff-SCR bei tiefen Temperaturen, MTZ 2001, 62 (2), 166-175. Link

Publications 1990-2000

  • M. Kleemann, M. Elsener, M. Koebel, A. Wokaun, Hydrolysis of Isocyanic Acid on SCR Catalysts, Ind. Eng. Chem. Res. 2000, 39, 4120-4126. doi:10.1021/ie9906161
  • M. Kleemann, M. Elsener, M. Koebel, A. Wokaun, Investigation of the ammonia adsorption on monolithic SCR catalysts by transient response analysis, Appl. Catal. B 2000, 27, 231-242. doi: 10.1016/S0926-3373(00)00158-2
  • M. Koebel, M. Elsener, M. Kleemann, Urea-SCR: a promising technique to reduce NOx emissions from automotive diesel engines, Catal. Today 2000, 59, 335-345. doi: 10.1016/S0920-5861(00)00299-6
  • M. Koebel, M. Elsener, Oxidation of Diesel-Generated Volatile Organic Compounds in the Selective Catalytic Reduction Process, Ind. Eng. Chem. Res. 1998, 37, 3864-3868. doi: 10.1021/ie9801103
  • M. Koebel, M. Elsener, Selective Catalytic Reduction of NO over Commercial DeNOx-Catalysts: Comparison of the Measured and Calculated Performance, Ind. Eng. Chem. Res. 1998, 37, 327-335. doi: 10.1021/ie970569h
  • M. Koebel, M. Elsener, Selective Catalytic Reduction of NO over Commercial DeNOx-Catalysts: Experimental Determination of Kinetic and Thermodynamic Parameters, Chem. Eng. Sci. 1998, 53, 657-669. doi: 10.1016/S0009-2509(97)00342-4
  • M. Koebel, M. Elsener, T. Marti, NOx-Reduction in Diesel Exhaust Gas with Urea and Selective Catalytic Reduction, Combust. Sci. Technol. 1996, 121, 85-102. doi: 10.1080/00102209608935588
  • M. Koebel, M. Elsener, Determination of Urea and its Thermal Decomposition Products by High-Performance Liquid Chromatography, J. Chromatogr. 1995, 689, 164-169. doi: 10.1016/0021-9673(94)00922-V
  • M. Koebel, M. Elsener, Entstickung von Abgasen nach dem SNCR-Verfahren; Ammoniak oder Harnstoff als Reduktionsmittel?, Chem. Ing. Tech. 1992, 64 (10), 934-937. doi: 10.1002/cite.330641014
  • M. Koebel, Vor- und Nachteile stickstoffhaltiger Reduktionsmittel beim Einsatz in mobilen SCR-Systemen, 3. Dresdner Motorenkolloquium, May 20-21, 1999, pp. 76-83.
  • M. Koebel, M. Elsener, Schwefeltrioxidbestimmung in Abgasen nach der Isopropanolmethode - eine kritische Betrachtung, Gefahrstoffe Reinhaltung der Luft 1997, 57, 193-199.
  • M. Koebel, Entstickung von Dieselabgasen mit Harnstoff-SCR, VDI-Berichte 1993, 1019, 195-211.
  • M. Koebel, Stickoxidminderung in Abgasen, SIA 1992, 110 (38), 693-700.
  • M. Koebel, M. Elsener, H. P. Eicher, Stickoxidminderung bei stationären Dieselmotoren mittels SCR und Harnstoff als Reduktionsmittel, BKW/TÜ/Umwelt 1991, No.3 (Special Luftreinhaltung), E24-E32.
  • M. Koebel, M. Elsener, Stickoxidminderung bei Dieselmotoren, SIA 1991, 109 (9), 187-192.
  • M. Koebel, M. Elsener, H. P. Eichler, Selektive katalytische Reduktion von Stickoxiden - mit Harnstoff gegen Stickoxide, Technische Rundschau 1990, 82 (49), 74-79.

Dissertations

  • M. Sridhar, Understanding and improving gold-catalyzed formic acid decomposition for application in the SCR process, Ph.D. Thesis No. 23507, ETH Zurich, 2016. Download
  • D. Peitz, Investigations on the catalytic decomposition of guanidinium formate, ammonium formate and methanamide as NH3-precursors for the selective catalytic reduction of NOx, Ph.D. Thesis No. 20568, ETH Zurich, 2012. Download
  • A. Bernhard, Catalytic urea decomposition, side-reactions and urea evaporation in the selective catalytic reduction of NOx, Ph.D. Thesis No. 20813, ETH Zurich, 2012. Download
  • M. Mehring, Composition and reactivity analysis of diesel soot with advanced FTIR spectroscopy and a new TG-FTIR system, at the example of the oxidation with O2, NO2 and H2SO4 and the SCR reaction with NOx and NH3, Ph.D. Thesis No. 19993, ETH Zurich, 2011. Download
  • S. Brandenberger, Selektive katalytische Reduktion (SCR) von NO mit NH3 über Fe-ZSM-5: Identifizierung der aktiven Zentren, hydrothermale Desaktivierung und Stabilisierung, Ph.D. Thesis No. 18867, ETH Zurich, 2010. Download
  • G. Piazzesi, The Catalytic Hydrolysis of Isocyanic Acid (HNCO) in the Urea-SCR Process, Ph.D. Thesis No. 16693, ETH Zurich, 2006. Download
  • K. Tikhomirov, Oxidation von Dieselruss in katalytischen Systemen, Ph.D. Thesis No. 16538, ETH Zurich, 2006. Download
  • M. Devadas, Selective Catalytic Reduction (SCR) of Nitrogen Oxides with Ammonia over Fe-ZSM5, Ph.D. Thesis No. 16524, ETH Zurich, 2006. Download
  • J. Despres, Adsorption and Catalytic Oxidation of Nitrogen Monoxide in Lean Exhaust for Future Automotive DeNOx Techniques, Ph.D. Thesis No. 15006, ETH Zurich, 2003. Download
  • G. Madia, Measures to enhance the NOx conversion in urea-SCR systems for automotive applications, Ph.D. Thesis No. 14595, ETH Zurich, 2002. Download
  • M. Kleemann, Beschichtung von Cordierit-Wabenkörpern für die selektive katalytische Reduktion von Stickoxiden, Ph.D. Thesis No. 13401, ETH Zurich, 1999. Download

Patent applications

  • A. Petrov, J. van Bokhoven, O. Kröcher, Method for preparing a sintering resistant alkali-zeolite supported metal catalyst for catalytic methane oxidation, Patent application EP17174071, 2017.
  • A. Kampolis, T. Schildhauer, O. Kröcher, Synthetic natural gas production using a carbon resistant, promoted supported catalyst, Patent application EP14178004, 2014.
  • D. Peitz, O. Kröcher, Catalyst for the conversion of liquid ammonia precursor solutions to gaseous ammonia avoiding the formation of undesired side products, Patent application EP12152814, 2012.
  • M. Elsener, O. Kröcher, D. Peitz, A. Bernhard, Ammonia generator converting liquid ammonia precursor solutions to gaseous ammonia for denox applications using selective catalytic reduction of nitrogen oxides, Patent application EP11153417, 2011P01935WO, 2011.
  • M. Casapu, M. Elsener, O. Kröcher, Catalyst for a DeNOx-application and a process for selective catalytic reduction of nitrogen oxides, Patent application EP10157791, 2010.
  • O. Kröcher, M. Elsener, Hydrolysis and oxidation of gaseous HCN over catalysts, Patent application EP09161936, 2009.
  • O. Kröcher, M. Elsener, A method and a system for a treatment of a NOx- and soot-containing exhaust gas, Patent application 2007P13058EP01, 2007.
  • M. Koebel, M. Elsener, Verfahren zum Bestimmen des Ammoniakgehalts in Abgasen, Swiss patent application 2159/97, 1997.
  • M. Koebel, M. Elsener, Verfahren zum Herstellen von gasförmigem Ammoniak aus Harnstoff, Swiss patent application, 1992.