N. N.

  • Chief Scientific Officer

Research Interests

  • Catalytic converters for emission control
  • Preparation and characterization of heterogeneous catalysts

  • Kinetic measurements
  • X-ray absorption spectroscopy
 

Education

2002 -  2007     Dr. Sc. ETH Zürich

                        Eidgenössische Technische Hochschule Zürich (ETH Zürich), Switzerland

                        Department of Chemistry and Applied Biosciences 

                        Thesis: NOx storage-reduction catalysts. Material aspects, thermal ageing and reactivation

 

1999 - 2001      M. Sc. Chemistry of Compounds with Biological Activity

                        West Unversity of Timisoara, Romania

 

1995 - 1999      B. Sc. Chemistry

                        West University of Timisoara, Romania

                 

 

 

Work History

since 2012       Chief Scientific Officer of the Exhaust Gas Center Karlsruhe

                       Karlsruhe Institute of Technology

                       Institute for Chemical Technology and Polymer Chemistry

 

2011 - 2012      Senior Scientist, Karlsruhe Institute of Technology, Germany 

                        Leader of the Exhaust Gas Aftertreatment Team in the Chemical Technology and Catalysis Group 

                        Institute for Chemical Technology and Polymer Chemistry

 

2007 - 2011      PostDoc, Paul Scherrer Institute (PSI), Switzerland

                        Catalysis for Energy Group

                        Research focus: NOx removal, soot oxidation, urea hydrolysis and hydrothermal ageing studies

                        for conventional zeolite- and novel CeO2-based NH3-SCR catalysts

                     

 

Recent Publications


Dynamic Structural Evolution of Ceria-Supported Pt Particles: A Thorough Spectroscopic Study
Wang, J.; Sauter, E.; Nefedov, A.; Heißler, S.; Maurer, F.; Casapu, M.; Grunwaldt, J.-D.; Wang, Y.; Wöll, C.
2022. The Journal of Physical Chemistry C. doi:10.1021/acs.jpcc.2c02420
Surface Noble Metal Concentration on Ceria as a Key Descriptor for Efficient Catalytic CO Oxidation
Maurer, F.; Beck, A.; Jelic, J.; Wang, W.; Mangold, S.; Stehle, M.; Wang, D.; Dolcet, P.; Gänzler, A. M.; Kübel, C.; Studt, F.; Casapu, M.; Grunwaldt, J.-D.
2022. ACS catalysis, 12, 2473–2486. doi:10.1021/acscatal.1c04565
Impact of gas phase reactions and catalyst poisons on the NH₃-SCR activity of a V₂O₅-WO₃/TiO₂ catalyst at pre-turbine position
Zengel, D.; Stehle, M.; Deutschmann, O.; Casapu, M.; Grunwaldt, J.-D.
2021. Applied catalysis / B, 288, Article no: 119991. doi:10.1016/j.apcatb.2021.119991
Insights into the Structural Dynamics of Pt/CeO Single-Site Catalysts during CO Oxidation
Dolcet, P.; Maurer, F.; Casapu, M.; Grunwaldt, J.-D.
2021. Catalysts, 11 (5), Art.-Nr. 617. doi:10.3390/catal11050617
Versatile and high temperature spectroscopic cell for operando fluorescence and transmission x-ray absorption spectroscopic studies of heterogeneous catalysts
Eggart, D.; Zimina, A.; Cavusoglu, G.; Casapu, M.; Doronkin, D. E.; Lomachenko, K. A.; Grunwaldt, J.-D.
2021. Review of scientific instruments, 92 (2), Art.-Nr. 023106. doi:10.1063/5.0038428
NaCl-template-based synthesis of TiO₂-Pd/Pt hollow nanospheres for H₂O₂ direct synthesis and CO oxidation
Liebertseder, M.; Wang, D.; Cavusoglu, G.; Casapu, M.; Wang, S.; Behrens, S.; Kübel, C.; Grunwaldt, J.-D.; Feldmann, C.
2021. Nanoscale, 13 (3), 2005–2011. doi:10.1039/d0nr08871d
Catalytic co oxidation and HO direct synthesis over pd and pt-impregnated titania nanotubes
Warmuth, L.; Nails, G.; Casapu, M.; Wang, S.; Behrens, S.; Grunwaldt, J.-D.; Feldmann, C.
2021. Catalysts, 11 (8), 949. doi:10.3390/catal11080949
Spatiotemporal Investigation of the Temperature and Structure of a Pt/CeO₂ Oxidation Catalyst for CO and Hydrocarbon Oxidation during Pulse Activation
Maurer, F.; Gänzler, A.; Lott, P.; Betz, B.; Votsmeier, M.; Loridant, S.; Vernoux, P.; Murzin, V.; Bornmann, B.; Frahm, R.; Deutschmann, O.; Casapu, M.; Grunwaldt, J.-D.
2021. Industrial & engineering chemistry research. doi:10.1021/acs.iecr.0c05798
Hydrocarbon and soot oxidation over cerium and iron doped vanadium SCR catalysts
Casapu, M.; Zheng, L.; Zimina, A.; Grunwaldt, J.-D.
2020. ChemCatChem, 12 (24), 6272–6284. doi:10.1002/cctc.202001314
Applications of Hard X-ray Spectroscopy in Energy-Related and Environmental Catalysis
Doronkin, D. E.; Casapu, M.; Grunwaldt, J.-D.
2020. Synchrotron radiation news, 33 (5), 11–17. doi:10.1080/08940886.2020.1812353
Understanding Sulfur Poisoning of Bimetallic Pd-Pt Methane Oxidation Catalysts and their Regeneration
Lott, P.; Eck, M.; Doronkin, D. E.; Zimina, A.; Tischer, S.; Popescu, R.; Belin, S.; Briois, V.; Casapu, M.; Grunwaldt, J.-D.; Deutschmann, O.
2020. Applied catalysis / B, 278, Art.Nr.: 119244. doi:10.1016/j.apcatb.2020.119244
Operando X-ray Absorption Spectroscopy Study during Conditioning of Pt-Based Catalysts and Its Implications for CO Oxidation
Gänzler, A. M.; Betz, B.; Baier-Stegmaier, S.; Belin, S.; Briois, V.; Votsmeier, M.; Casapu, M.
2020. The journal of physical chemistry <Washington, DC> / C, 124 (37), 20090–20100. doi:10.1021/acs.jpcc.0c04740
Emission of Toxic HCN During NOx Removal by Ammonia SCR in the Exhaust of Lean-Burn Natural Gas Engines
Zengel, D.; Koch, P.; Torkashvand, B.; Grunwaldt, J.-D.; Casapu, M.; Deutschmann, O.
2020. Angewandte Chemie / International edition, 59 (34), 14423–14428. doi:10.1002/anie.202003670
Freisetzung von toxischem HCN bei der Stickoxidreduktion mittels NH₃‐SCR in mager betriebenen Erdgasmotoren
Zengel, D.; Koch, P.; Torkashvand, B.; Grunwaldt, J.-D.; Casapu, M.; Deutschmann, O.
2020. Angewandte Chemie, 132 (34), 14530–14535. doi:10.1002/ange.202003670
Tracking the formation, fate and consequence for catalytic activity of Pt single sites on CeO2
Maurer, F.; Jelic, J.; Wang, J.; Gänzler, A.; Dolcet, P.; Wöll, C.; Wang, Y.; Studt, F.; Casapu, M.; Grunwaldt, J.-D.
2020. Nature catalysis, 3, 824–833. doi:10.1038/s41929-020-00508-7
Exploiting the dynamic properties of Pt on ceria for low-temperature CO oxidation
Ferré, G.; Aouine, M.; Bosselet, F.; Burel, L.; Cadete Santos Aires, F. J.; Geantet, C.; Ntais, S.; Maurer, F.; Casapu, M.; Grunwaldt, J.-D.; Epicier, T.; Loridant, S.; Vernoux, P.
2020. Catalysis science & technology, 10 (12), 3904–3917. doi:10.1039/d0cy00732c
PGM based catalysts for exhaust-gas after-treatment under typical diesel, gasoline and gas engine conditions with focus on methane and formaldehyde oxidation
Gremminger, A.; Pihl, J.; Casapu, M.; Grunwaldt, J.-D.; Toops, T. J.; Deutschmann, O.
2020. Applied catalysis / B, 265, Article No.118571. doi:10.1016/j.apcatb.2019.118571
Unravelling the Different Reaction Pathways for Low Temperature CO Oxidation on Pt/CeO2 and Pt/Al2O3 by Spatially Resolved Structure–Activity Correlations
Gänzler, A. M.; Casapu, M.; Doronkin, D. E.; Maurer, F.; Lott, P.; Glatzel, P.; Votsmeier, M.; Deutschmann, O.; Grunwaldt, J.-D.
2019. The journal of physical chemistry letters, 10 (24), 7698–7705. doi:10.1021/acs.jpclett.9b02768
NH-SCR over V-W/TiO Investigated by Operando X-ray Absorption and Emission Spectroscopy
Doronkin, D. E.; Benzi, F.; Zheng, L.; Sharapa, D. I.; Amidani, L.; Studt, F.; Roesky, P. W.; Casapu, M.; Deutschmann, O.; Grunwaldt, J.-D.
2019. The journal of physical chemistry <Washington, DC> / C, 123 (23), 14338–14349. doi:10.1021/acs.jpcc.9b00804
Impact of Preparation Method and Hydrothermal Aging on Particle Size Distribution of Pt/γ-AlO and Its Performance in CO and NO Oxidation
Ogel, E.; Casapu, M.; Doronkin, D. E.; Popescu, R.; Störmer, H.; Mechler, C.; Marzun, G.; Barcikowski, S.; Türk, M.; Grunwaldt, J.-D.
2019. The journal of physical chemistry <Washington, DC> / C, 123 (9), 5433–5446. doi:10.1021/acs.jpcc.8b11065
Oxidation State and Dielectric Properties of Ceria-Based Catalysts by Complementary Microwave Cavity Perturbation and X-Ray Absorption Spectroscopy Measurements
Steiner, C.; Gänzler, A. M.; Zehentbauer, M.; Hagen, G.; Casapu, M.; Müller, S.; Grunwaldt, J.-D.; Moos, R.
2019. Topics in catalysis, 62 (1-4), 227–236. doi:10.1007/s11244-018-1110-3
Selective Catalytic Reduction of NOx with Ammonia and Hydrocarbon Oxidation Over V2O5–MoO3/TiO2 and V2O5–WO3/TiO2 SCR Catalysts
Zheng, L.; Casapu, M.; Stehle, M.; Deutschmann, O.; Grunwaldt, J.-D.
2019. Topics in catalysis, 62 (1-4), 129–139. doi:10.1007/s11244-018-1097-9
Insight into the Nature of Active Species of Pt/Al2O3 Catalysts for low Temperature NH3 Oxidation
Svintsitskiy, D. A.; Kibis, L. S.; Stadnichenko, A. I.; Slavinskaya, E. M.; Romanenko, A. V.; Fedorova, E. A.; Stonkus, O. A.; Doronkin, D. E.; Marchuk, V.; Zimina, A.; Casapu, M.; Grunwaldt, J.-D.; Boronin, A. I.
2019. ChemCatChem, cctc.201901719. doi:10.1002/cctc.201901719
The Effect of Prereduction on the Performance of Pd/Al₂O₃ and Pd/CeO₂ Catalysts during Methane Oxidation
Lott, P.; Dolcet, P.; Casapu, M.; Grunwaldt, J.-D.; Deutschmann, O.
2019. Industrial & engineering chemistry research, 58 (28), 12561–12570. doi:10.1021/acs.iecr.9b01267
The dynamic nature of Cu sites in Cu-SSZ-13 and the origin of the seagull NOx conversion profile during NH₃-SCR
Fahami, A. R.; Günter, T.; Doronkin, D. E.; Casapu, M.; Zengel, D.; Vuong, T. H.; Simon, M.; Breher, F.; Kucherov, A. V.; Brückner, A.; Grunwaldt, J.-D.
2019. Reaction chemistry & engineering, 4 (6), 1000–1018. doi:10.1039/c8re00290h
Tuning the Pt/CeO Interface by in Situ Variation of the Pt Particle Size
Gänzler, A. M.; Casapu, M.; Maurer, F.; Störmer, H.; Gerthsen, D.; Ferré, G.; Vernoux, P.; Bornmann, B.; Frahm, R.; Murzin, V.; Nachtegaal, M.; Votsmeier, M.; Grunwaldt, J.-D.
2018. ACS catalysis, 8 (6), 4800–4811. doi:10.1021/acscatal.8b00330
Regeneration of Sulfur Poisoned Pd–Pt/CeO2–ZrO2–Y2O3–La2O3 and Pd–Pt/Al2O3 Methane Oxidation Catalysts
Lott, P.; Eck, M.; Doronkin, D. E.; Popescu, R.; Casapu, M.; Grunwaldt, J.-D.; Deutschmann, O.
2018. Topics in catalysis, 62 (164–171). doi:10.1007/s11244-018-1121-0
Tuning the Structure of Platinum Particles on Ceria In Situ for Enhancing the Catalytic Performance of Exhaust Gas Catalysts
Gänzler, A. M.; Casapu, M.; Vernoux, P.; Loridant, S.; CadeteSantosAires, F. J.; Epicier, T.; Betz, B.; Hoyer, R.; Grunwaldt, J.-D.
2017. Angewandte Chemie / International edition, 56 (42), 13078–13082. doi:10.1002/anie.201707842
Sulfur poisoning and regeneration of bimetallic Pd-Pt methane oxidation catalysts
Gremminger, A.; Lott, P.; Merts, M.; Casapu, M.; Grunwaldt, J.-D.; Deutschmann, O.
2017. Applied catalysis / B, 218, 833–843. doi:10.1016/j.apcatb.2017.06.048
Origin of the Normal and Inverse Hysteresis Behavior during CO Oxidation over Pt/Al₂O₃
Casapu, M.; Fischer, A.; Gänzler, A. M.; Popescu, R.; Crone, M.; Gerthsen, D.; Türk, M.; Grunwaldt, J.-D.
2017. ACS catalysis, 7 (1), 343–355. doi:10.1021/acscatal.6b02709
Comparison of the Catalytic Performance and Carbon Monoxide Sensing Behavior of Pd-SnO₂ Core@Shell Nanocomposites
Ogel, E.; Müller, S. A.; Sackmann, A.; Gyger, F.; Bockstaller, P.; Brose, E.; Casapu, M.; Schöttner, L.; Gerthsen, D.; Feldmann, C.; Grunwaldt, J.-D.
2017. ChemCatChem, 9 (3), 407–413. doi:10.1002/cctc.201601132
HERFD-XANES and XES as complementary operando tools for monitoring the structure of Cu-based zeolite catalysts during NOx-removal by ammonia SCR
Günter, T.; Doronkin, D. E.; Carvalho, H. W. P.; Casapu, M.; Grunwaldt, J.-D.
2016. Journal of physics / Conference Series, 712 (1), Art. Nr.: 012071. doi:10.1088/1742-6596/712/1/012071
Using combined XAS/DRIFTS to study CO/NO Oxidation over Pt/Al2O3 catalysts
Gänzler, A. M.; Lichtenberg, H.; Frenkel, A. I.; Casapu, M.; Boubnov, A.; Wang, D.; Grunwaldt, J.-D.
2016. Journal of physics / Conference Series, 712 (1), Art. Nr.: 012045. doi:10.1088/1742-6596/712/1/012045
The SCR of NOx with NH3 Examined by Novel X-ray Emission and X-ray Absorption Methods
Günter, T.; Doronkin, D. E.; Boubnov, A.; Carvalho, H. W. P.; Casapu, M.; Grunwaldt, J.-D.
2016. Topics in catalysis, 59 (10-12), 866–874. doi:10.1007/s11244-016-0561-7
Cu-SSZ-13 as pre-turbine NOx-removal-catalyst: Impact of pressure and catalyst poisons
Günter, T.; Pesek, J.; Schäfer, K.; Bertótiné Abai, A.; Casapu, M.; Deutschmann, O.; Grunwaldt, J.-D.
2016. Applied catalysis / B, 198, 548–557. doi:10.1016/j.apcatb.2016.06.005
Study on the hydrothermal and SO₂ stability of Al₂O₃-supported manganese and iron oxide catalysts for lean CO oxidation
Tepluchin, M.; Kureti, S.; Casapu, M.; Ogel, E.; Mangold, S.; Grunwaldt, J. D.
2015. Catalysis today, 258, 498–506. doi:10.1016/j.cattod.2015.01.010
Structural snapshots of the SCR reaction mechanism on Cu-SSZ-13
Günter, T.; Carvalho, H. W. P.; Doronkin, D. E.; Sheppard, T.; Glatzel, P.; Atkins, A. J.; Rudolph, J.; Jacob, C. R.; Casapu, M.; Grunwaldt, J. D.
2015. Chemical communications, 51, 9227–9230. doi:10.1039/C5CC01758K
Operando spatially and time-resolved X-ray absorption spectroscopy and infrared thermography during oscillatory CO oxidation
Gänzler, A. M.; Casapu, M.; Boubnov, A.; Müller, O.; Conrad, S.; Lichtenberg, H.; Frahm, R.; Grunwaldt, J. D.
2015. Journal of catalysis, 328, 216–224. doi:10.1016/j.jcat.2015.01.002
Aging of a Pt/Al₂O₃ exhaust gas catalyst monitored by quasi in situ X-ray micro computed tomography
Hofmann, G.; Rochet, A.; Ogel, E.; Casapu, M.; Ritter, S.; Ogurreck, M.; Grunwaldt, J.-D.
2015. RSC Advances, 5 (9), 6893–6905. doi:10.1039/C4RA14007A
Ageing effects on exhaust gas catalysts: Microscopic changes captured by x-ray tomography
Hofmann, G.; Rochet, A.; Baier, S.; Casapu, M.; Ritter, S.; Wilde, F.; Ogurreck, M.; Beckmann, F.; Grunwaldt, J.-D.
2014. Journal of physics / Conference Series, 499 (1), 012017/1–11. doi:10.1088/1742-6596/499/1/012017
Fe and Mn-Based catalysts supported on γ-Al₂O₃ for CO oxidation under O₂-rich conditions
Tepluchin, M.; Casapu, M.; Boubnov, A.; Lichtenberg, H.; Wang, D.; Kureti, S.; Grunwaldt, J.-D.
2014. ChemCatChem, 6 (6), 1763–1773. doi:10.1002/cctc.201301040
Operando spatially- and time-resolved XAS study on zeolite catalysts for selective catalytic reduction of NOₓ by NH₃
Doronkin, D. E.; Casapu, M.; Günter, T.; Müller, O.; Frahm, R.; Grunwaldt, J. D.
2014. The journal of physical chemistry <Washington, DC> / C, 118, 10204–10212. doi:10.1021/jp5028433
Oscillatory CO oxidation over Pt/Al₂O₃ catalysts studied by in situ XAS and DRIFTS
Boubnov, A.; Gänzler, A.; Conrad, S.; Casapu, M.; Grunwaldt, J.-D.
2013. Topics in catalysis, 56 (1-8), 333–338. doi:10.1007/s11244-013-9976-6
Potential and limitations of natural chabazite for selective catalytic reduction of NOₓ with NH₃
Günter, T.; Casapu, M.; Doronkin, D.; Mangold, S.; Trouillet, V.; Augenstein, T.; Grunwaldt, J.-D.
2013. Chemie - Ingenieur - Technik, 85 (5), 632–641. doi:10.1002/cite.201200182