Perovskite-Type Oxides as Exsolution Catalysts in CO2 Utilization

Author:

Ruh Thomas1ORCID,Schrenk Florian1ORCID,Berger Tobias1,Rameshan Christoph1ORCID

Affiliation:

1. Chair of Physical Chemistry, Montanuniversität Leoben, 8700 Leoben, Austria

Abstract

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.

Funder

European Research Council

Austrian Science Fund

Austrian Ministry of Education, Science and Research

Publisher

MDPI AG

Subject

General Earth and Planetary Sciences,General Environmental Science

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