Publication
Title
Direct operando visualization of metal support interactions induced by hydrogen spillover during CO₂ hydrogenation
Author
Abstract
The understanding of catalyst active sites is a fundamental challenge for the future rational design of optimized and bespoke catalysts. For instance, the partial reduction of Ce4+ surface sites to Ce3+ and the formation of oxygen vacancies are critical for CO2 hydrogenation, CO oxidation, and the water gas shift reaction. Furthermore, metal nanoparticles, the reducible support, and metal support interactions are prone to evolve under reaction conditions; therefore a catalyst structure must be characterized under operando conditions to identify active states and deduce structure-activity relationships. In the present work, temperature-induced morphological and chemical changes in Ni nanoparticle-decorated mesoporous CeO2 by means of in situ quantitative multimode electron tomography and in situ heating electron energy loss spectroscopy, respectively, are investigated. Moreover, operando electron energy loss spectroscopy is employed using a windowed gas cell and reveals the role of Ni-induced hydrogen spillover on active Ce3+ site formation and enhancement of the overall catalytic performance.
Language
English
Source (journal)
Advanced materials. - Weinheim
Publication
Weinheim : Wiley-v c h verlag gmbh , 2023
ISSN
0935-9648
DOI
10.1002/ADMA.202306447
Volume/pages
35 :51 (2023) , p. 1-10
Article Reference
2306447
ISI
001106139400001
Pubmed ID
37865834
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Project info
3D Structure of nanomaterials under realistic conditions (REALNANO).
Enabling science and technology through European electron microscopy (ESTEEM3).
Interoperable electron Microscopy Platform for advanced RESearch and Services (IMPRESS).
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identifier
Creation 04.12.2023
Last edited 06.01.2024
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