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- Title
Perovskite-Type Oxides as Exsolution Catalysts in CO 2 Utilization.
- Authors
Ruh, Thomas; Schrenk, Florian; Berger, Tobias; Rameshan, Christoph
- Abstract
Definition: Perovskite-type oxides (ABO3) are a highly versatile class of materials. They are compositionally flexible, as their constituents can be chosen from a wide range of elements across the periodic table with a vast number of possible combinations. This flexibility enables the tuning of the materials' properties by doping the A- and/or B-sites of the base structure, facilitating the application-oriented design of materials. The ability to undergo exsolution under reductive conditions makes perovskite-type oxides particularly well-suited for catalytic applications. Exsolution is a process during which B-site elements migrate to the surface of the material where they form anchored and finely dispersed nanoparticles that are crucially important for obtaining a good catalytic performance, while the perovskite base provides a stable support. Recently, exsolution catalysts have been investigated as possible materials for CO2 utilization reactions like reverse water–gas shift reactions or methane dry reforming.
- Subjects
CARBON dioxide; CATALYSTS; CERAMICS; OXIDES; PERIODIC table of the elements; SURFACES (Technology); OXIDE ceramics
- Publication
Encyclopedia, 2023, Vol 3, Issue 4, p1461
- ISSN
2673-8392
- Publication type
Article
- DOI
10.3390/encyclopedia3040104