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Carsten SieversAssistant Professor, School of Chemical and Biomolecular Engineering, Adjunct Professor, School of Chemistry and Biochemistry Office: Room 2218, Ford ES&T Building |
Diplom 2003, Technical Univ. of Munich, Germany
D.Sc. 2006, Technical Univ. of Munich, Germany
Research Interests
Dr. Sievers’s research interests are in heterogeneous catalysis, reactor design, applied spectroscopy, and characterization and synthesis of solid materials. Combining these interests he seeks to develop processes for the production of fuels and chemicals. His research program combines fundamental and applied research.
In fundamental studies, a suite of analytical and spectroscopic techniques (e.g. IR, NMR) is used to gain knowledge on structure-reactivity relationships of heterogeneous catalysts. Moreover, surface reactions are studied on a molecular level so that mechanisms and reaction pathways can be derived. Information obtained from these studies provides the foundation for intelligent catalyst design.
Applied studies focus specific catalytic processes. For these projects, continuously operated flow reactor systems are designed. Different catalysts are tested for reactivity, selectivity and stability and the influence of the operating conditions is investigated. Catalyst deactivation is studied in detail to develop suitable regeneration methods or to avoid deactivation entirely by improved catalyst design.
An important goal of Dr. Sievers’s research is to enable technology
for utilization of alternative resources in order to reduce the current
dependence of oil. Among these biomass is a particularly promising candidate
because it is renewable and can be produced CO2 neutral.
Representative Publications
• Ravenelle, R.M., Copeland, J.R., Kim, W., Crittenden, J.C., Sievers, C.; “Structural Changes of ?-Al2O3-Supported Catalysts in Hot Liquid Water” ACS Catal., 1 (2011) 552-561 begin_of_the_skype_highlighting 1 (2011) 552-561.
• Ravenelle, R.M., Schüßler, F., D'Amico, A., Danilina, N., van Bokhoven, J.A., Lercher, J.A., Jones, C.W., Sievers, C.; “Stability of Zeolites in Hot Liquid Water” J. Phys. Chem. C, 114 (2010) 19582-19595.
• Sievers, C., Musin, I., Marzialetti, T., Valenzuela Olarte, M.B., Agrawal, P.K., Jones, C.W.; “Acid catalyzed conversion of sugars and furfurals in ionic liquids” ChemSusChem., 2 (2009) 665-671.
• Sievers, C., Marzialetti, T., Hoskins, T.J.C., Valenzuela Olarte, M.B., Agrawal, P.K., Jones, C.W.; “Quantitative solid state NMR analysis of residues from acid hydrolysis of loblolly pine wood” Biores. Tech., 100 (2009) 4758-4765.
• Sievers, C., Valenzuela Olarte, M.B., Marzialetti, T., Musin, I., Agrawal, P.K., Jones, C.W. “Ionic liquid phase hydrolysis of cellulose and pine wood” Ind. Eng. Chem. Res., 48 (2009) 1277–1286.
• Marzialetti, T., Valenzuela Olarte, M.B., Sievers, C., Hoskins, T., Agrawal, P.K., Jones, C.W.; “Hydrolysis of loblolly pine wood in dilute mineral acids” Ind. Eng. Chem. Res., 47 (2008) 7131–7140.
• Sievers, C., Liebert, J.S., Stratmann M.M., Olindo, R., Lercher, J.A.; “Comparison of zeolites LaX and LaY as catalysts for isobutane/2-butene alkylation” Appl. Catal. A-Gen. 336 (2008) 89-100.
• Sievers, C., Jiménez, O., Knapp, R., Lin, X., Müller, T.E., Türler, A., Wierczinski, B., Lercher, J.A.; “Palladium catalysts immobilized in thin films of ionic liquid for the direct addition of aniline to styrene” J. Mol. Catal. A-Chem. 279 (2008) 187-199.
• Fow, K.L., Jaenicke, S., Müller, T.E., Sievers, C. “Enhanced Enantioselectivity of Chiral Hydrogenation Catalysts after Immobilisation in Thin Films of Ionic Liquid” J. Mol. Catal. A-Chem. 279 (2008) 239-247.
• Sievers, C., Onda, A., Guzman, A., Olindo, R., and Lercher, J.A.; “Surface chemistry of branched alkanes on lanthanum exchange zeolite X” Stud. Surf. Sci. Catal. 170 (2007) 1153-1160.
• Williams, M.F., Fonfé, B., Sievers, C., Abraham, A., van Bokhoven, J.A., Jentys, A., van Veen, J.A.R., Lercher, J.A.; “Hydrogenation of tetralin on silica-alumina supported Pt catalysts I-Physicochemical characterization of the catalytic materials” J. Catal. 251 (2007) 485-496.
• Xu, B., Sievers, C., Lercher, J.A., van Veen, J.A.R., Giltay, P., Prins, R., van Bokhoven, J.A.; “Strong Brønsted Acidity in Amorphous Silica-Aluminas” J. Phys. Chem. C 111 (2007) 12075-12079.
• Sievers, C., Onda, A., Olindo, R., Lercher, J.A.; “Adsorption and polarization of branched alkanes on H-LaX” J. Phys. Chem. C 111 (2007) 5454-5464.
• Sievers, C., Zuazo, I., Guzman, A., Olindo, R., Syska, H., Lercher, J.A.; “Stages of aging and deactivation of zeolite LaX in isobutane/2-butene alkylation” J. Catal. 246 (2007) 315-324.
• Sievers, C., Onda, A., Guzman, A., Otillinger, K.S., Olindo, R., and Lercher, J.A. “Low-Temperature Activation of Branched Octane Isomers over Lanthanum Exchanged Zeolite X Catalysts” J. Phys. Chem. C 111 (2007) 210-218.
• Guzman, A.; Zuazo, I.; Feller, A.; Olindo, R.; Sievers, C.; Lercher, J. A.; “Influence of the Activation Temperature on the Physicochemical Properties and Catalytic Activity of La-X Zeolites for Iisobutane/cis-2-Butene Alkylation” Micropor. Mesopor. Mater. 97 (2006) 49-57.
• Xu, B., Sievers, C., Hong, S. B., Prins, R., van Bokhoven, J.A.; “Catalytic Activity of Brønsted Acid Sites in Zeolites: Intrinsic Activity, Rate-Limiting Step, and Influence of the Local Structure of the Acid Sites” J. Catal. 244 (2006) 163-168.
• Sievers, C., Jimenez, O., Müller, T.E., Steuernagel, S., Lercher J.A.; “Formation of solvent cages around organometallic complexes in thin films of supported ionic liquid” J. Am. Chem. Soc. 128 (2006) 13990-13991.
• Jimenez, O., Müller, T.E., Sievers, C., Spirkl, A., Lercher J.A.; “Markownikoff and Anti-Markownikoff Hydroamination with Palladium Catalysts Immobilized in Thin Films of Silica Supported Ionic Liquids” Chem. Comm. (2006) 2974-2976.
• Guzman, A.; Zuazo, I.; Feller, A.; Olindo, R.; Sievers, C.; Lercher, J.A. “On the formation of the acid sites in lanthanum exchanged X zeolites used for isobutane/cis-2-butene alkylation” Micropor. Mesopor. Mater. 83 (2005) 309-318.
• Halbach, T.S.; Mix, S.; Fischer, D.; Maechling, S.; Krause, J.O.; Sievers, C.; Blechert, S.; Nuyken, O.; Buchmeiser, M.R.J. “Novel Supported and Unsupported Ru-Based Metathesis Catalysts: Synthesis and Reactivity” J. Org. Chem. 70 (2005) 4687-4694.
• Cerqueira, H.S.; Sievers, C.; Joly, G.; Magnoux, P.; Lercher, J.A. “Multitechnique Characterization of Coke Produced during Commercial Resid FCC Operation” Ind. Eng. Chem. Res. 44 (2005) 2069-2077.
• Penzien, J.; Abraham, A.; van Bokhoven, J.A.; Jentys, A.; Müller, T.E.; Sievers, C.; Lercher, J.A. ”Generation and Characterization of Well-Defined Zn2+ Lewis Acid Sites in Ion Exchanged Zeolite BEA” J. Phys. Chem. B 108 (2004) 4116-4126.