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Publisher DOI: 10.1002/cctc.202200337
Title: Catalytic profile reactor for multimodal Operando measurements during periodic operation
Language: English
Authors: Espinoza, Diego 
Wollak, Birte 
Sheppard, Thomas 
Dippel, Ann Christin 
Sturm, Marina 
Gutowski, Olof 
Schmidt, Michael 
Korup, Oliver 
Horn, Raimund 
Keywords: heterogeneous catalysis; kinetic modeling; periodic reactor operation; spatiotemporal operando study; X-ray diffraction
Issue Date: 20-Dec-2022
Publisher: Wiley-VCH
Source: ChemCatChem 14 (24): e202200337 (2022-12-20)
Abstract (english): 
Multimodal operando measurement concepts aim to provide structure-activity relations of heterogeneously catalyzed reactions during operation. While the utilization of multiple characterization and spatiotemporally-resolved techniques provides complementary information at relevant time and length scales, different reactor operation modes allow to track catalyst dynamics. However, combining these measurement concepts require complex experimental setups with high demands from a strongly interdisciplinary field of reaction engineering, physics and chemistry. In this study, a fully automated and integrated catalytic profile reactor setup is introduced which is capable of measuring spatiotemporally-resolved species concentration, temperature and catalyst structure information under periodic reaction conditions. The oxidative dehydrogenation of C2H6 to C2H4 over MoO3/γ-Al2O3 was used as a test system. Using the periodic profile approach, the catalytic system was investigated through activity measurements resolved in time and space combined with reactor simulations and operando high-energy X-ray diffraction. The presented catalytic profile reactor setup is a versatile technology, aiming to promote combined and detailed analysis of local catalyst activity and structure, for improved reproducibility and quality of operando measurements.
DOI: 10.15480/882.4806
ISSN: 1867-3899
Journal: ChemCatChem 
Institute: Chemische Reaktionstechnik V-2 
Document Type: Article
Project: Projekt DEAL 
Funded by: Bundesministerium für Bildung und Forschung (BMBF) 
Deutsches Elektronen-Synchrotron DESY 
License: CC BY-NC-ND 4.0 (Attribution-NonCommercial-NoDerivatives) CC BY-NC-ND 4.0 (Attribution-NonCommercial-NoDerivatives)
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