christian kuebel ∂does-not-exist.kit edu

B01 – Synthesis and Characterization of High-Surface-Area Metal Oxide Supports

Project B01 aims at the synthesis and characterization of high-surface metal oxide supports (CeO₂, Al₂O₃, TiO₂) as i.e. hollow nanospheres and nanosponges with high surface are and porosity. Dopants will be applied to obtain and to maintain precious-metal nanoparticles (Pt, Pd, Rh, Ru) with optimal size for highest catalytic activity also under transient reaction conditions. Electron microscopy and electron spectroscopy (e.g. electron energy loss spectroscopy, tomography, pair-distribution analysis) will be used to characterize the 2D/3D morphology, the local oxidation state and the metal-support interaction

Project-related publications by participating researchers

Project- and subject-related list of publications
D. Bartenbach, O. Wenzel, R. Popescu, L.-P. Faden, A. Reiß, M. Kaiser, A. Zimina, J.-D. Grunwaldt, D. Gerthsen, C. Feldmann, Liquid-Phase Synthesis of Highly Reactive Rare-Earth Metal Nanoparticles. Angew. Chem. Int. Ed. 2021, 60, 17373-17377; DOI: 10.1002/anie.202104955.
J. Hochstrasser, E. Juère, F. Kleitz, W. Wang, C. Kübel, U. Tallarek, Insights into the intraparticle morphology of dendritic mesoporous silica nanoparticles from electron tomographic reconstructions, J. Coll. Int. Sci. 2021, 592, 296-309; DOI: 10.1016/j.jcis.2021.02.069.
X. Huang, D. Hlushkou, D. Wang, U. Tallarek, C. Kübel, Quantitative Analysis of Mesoporous Structures by Electron Tomography: A Phantom Study, Ultramicroscopy 2023, 243, 113639; DOI: 10.1016/j.ultramic.2022.113639.
M. Liebertseder, D. Wang, G. Cavusoglu, M. Casapu, S. Wang, S. Behrens, C. Kübel, J.-D. Grunwaldt, C. Feldmann, NaCl-template-based Synthesis of TiO2-Pd/Pt Hollow-Nanosphere Catalyst for H2O2 Direct Synthesis and CO Oxidation. Nanoscale 2021, 13, 2005-2011; DOI: 10.1039/D0NR08871D.
M. Liebertseder, C. B. Maliakkal, M. Crone, G. Nails, M. Casapu, J.-D. Grunwaldt, M. Türk, C. Kübel, C. Feldmann, TiO₂-CeO_x-Pt Hollow Nanosphere Catalyst for Low-Temperature CO Oxidation. Chem. Cat. Chem. 2023, online; DOI: 10.1002/cctc.202301358.
F. Maurer, A. Beck, J. Jelic, W. Wang, S. Mangold, M. Stehle, D. Wang, P. Dolcet, A. Gänzler, C. Kübel, F. Studt, M. Casapu, J.-D. Grunwaldt, Surface noble metal concentration on ceria as key descriptor for efficient catalytic CO oxidation, ACS Catal. 2022, 12, 2473–2486; DOI: 10.1021/acscatal.1c04565.
U. Tallarek, J. Hochstrasser, F. Ziegler, X. Huang, C. Kübel, M.R. Buchmeiser, Olefin ring-closing metathesis under spatial confinement: Morphology–transport relationships, ChemCatChem 2021, 13, 281-292; DOI: 10.1002/cctc.202001495.
L. Warmuth, G. Nails, M. Casapu, S. Wang, S. Behrens, J.-D. Grunwaldt, C. Feldmann, Catalytic CO Oxidation and H₂O₂ Direct Synthesis over Pd and Pt-Impregnated Titania Nanotubes. Catalysts 2021, 11, 949(1-11); DOI: 10.3390/catal11080949.
L. Warmuth, P. Lott, O. Deutschmann, C. Feldmann, MO_x@VO_x-Pd-type Nanorods and Nanotubes as Catalysts for Selective Reduction of NO. Chem. Cat. Chem. 2023, 15, e202201354(1-10); DOI: 10.1002/cctc.202201354.
S. Weber, R.T. Zimmermann, J. Bremer, K.L. Abel, D. Poppitz, N. Prinz, J. Ilsemann, S. Wendholt, Q. Yang, R. Pashminehazar, F. Monaco, P. Cloetens, X. Huang, C. Kübel, E. Kondratenko, M. Bauer, M. Bäumer, M. Zobel, R. Gläser, K. Sundmacher, T.L. Sheppard, Digitization in Catalysis Research: Towards a Holistic Description of a Ni/Al2O3 Reference Catalyst for CO₂ Methanation, ChemCatChem 2022, e202101878; DOI: 10.1002/cctc.202101878.

Project- and subject-related list of publications

D. Bartenbach, O. Wenzel, R. Popescu, L.-P. Faden, A. Reiß, M. Kaiser, A. Zimina, J.-D. Grunwaldt, D. Gerthsen, C. Feldmann, Liquid-Phase Synthesis of Highly Reactive Rare-Earth Metal Nanoparticles. Angew. Chem. Int. Ed. 2021, 60, 17373-17377;

DOI: 10.1002/anie.202104955.

J. Hochstrasser, E. Juère, F. Kleitz, W. Wang, C. Kübel, U. Tallarek, Insights into the intraparticle morphology of dendritic mesoporous silica nanoparticles from electron tomographic reconstructions, J. Coll. Int. Sci. 2021, 592, 296-309;

DOI: 10.1016/j.jcis.2021.02.069.

X. Huang, D. Hlushkou, D. Wang, U. Tallarek, C. Kübel, Quantitative Analysis of Mesoporous Structures by Electron Tomography: A Phantom Study, Ultramicroscopy 2023, 243, 113639;

DOI: 10.1016/j.ultramic.2022.113639.

M. Liebertseder, D. Wang, G. Cavusoglu, M. Casapu, S. Wang, S. Behrens, C. Kübel, J.-D. Grunwaldt, C. Feldmann, NaCl-template-based Synthesis of TiO2-Pd/Pt Hollow-Nanosphere Catalyst for H2O2 Direct Synthesis and CO Oxidation. Nanoscale 2021, 13, 2005-2011;

DOI: 10.1039/D0NR08871D.

M. Liebertseder, C. B. Maliakkal, M. Crone, G. Nails, M. Casapu, J.-D. Grunwaldt, M. Türk, C. Kübel, C. Feldmann, TiO₂-CeO_x-Pt Hollow Nanosphere Catalyst for Low-Temperature CO Oxidation. Chem. Cat. Chem. 2023, online;

DOI: 10.1002/cctc.202301358.

F. Maurer, A. Beck, J. Jelic, W. Wang, S. Mangold, M. Stehle, D. Wang, P. Dolcet, A. Gänzler, C. Kübel, F. Studt, M. Casapu, J.-D. Grunwaldt, Surface noble metal concentration on ceria as key descriptor for efficient catalytic CO oxidation, ACS Catal. 2022, 12, 2473–2486;

DOI: 10.1021/acscatal.1c04565.

U. Tallarek, J. Hochstrasser, F. Ziegler, X. Huang, C. Kübel, M.R. Buchmeiser, Olefin ring-closing metathesis under spatial confinement: Morphology–transport relationships, ChemCatChem 2021, 13, 281-292;

DOI: 10.1002/cctc.202001495.

L. Warmuth, G. Nails, M. Casapu, S. Wang, S. Behrens, J.-D. Grunwaldt, C. Feldmann, Catalytic CO Oxidation and H₂O₂ Direct Synthesis over Pd and Pt-Impregnated Titania Nanotubes. Catalysts 2021, 11, 949(1-11);

DOI: 10.3390/catal11080949.

L. Warmuth, P. Lott, O. Deutschmann, C. Feldmann, MO_x@VO_x-Pd-type Nanorods and Nanotubes as Catalysts for Selective Reduction of NO. Chem. Cat. Chem. 2023, 15, e202201354(1-10);

DOI: 10.1002/cctc.202201354.

S. Weber, R.T. Zimmermann, J. Bremer, K.L. Abel, D. Poppitz, N. Prinz, J. Ilsemann, S. Wendholt, Q. Yang, R. Pashminehazar, F. Monaco, P. Cloetens, X. Huang, C. Kübel, E. Kondratenko, M. Bauer, M. Bäumer, M. Zobel, R. Gläser, K. Sundmacher, T.L. Sheppard, Digitization in Catalysis Research: Towards a Holistic Description of a Ni/Al2O3 Reference Catalyst for CO₂ Methanation, ChemCatChem 2022, e202101878;

DOI: 10.1002/cctc.202101878.

The project is funded since 2021 and is now in the second funding phase.

Project Area B - Porous catalysts