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Preparation and Application of Novel Perovskite Catalysts

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Green Chemistry".

Deadline for manuscript submissions: 31 December 2024 | Viewed by 538

Special Issue Editor


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Guest Editor
Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
Interests: perovskite catalysts; catalyze; environmental catalysis

Special Issue Information

Dear Colleagues,

Perovskite-type oxides, represented by the general formula ABO3, offer an expansive variety of structural possibilities, as numerous A and B cations can be combined. In addition, doping other elements could further significantly enhance the catalytic activity of perovskite-type oxides.

Perovskite-type oxides, which exhibit exceptional thermal stability, have shown superior applicative potential in many reactions, including solid-state electrochemistry, fuel cell technology, and catalysis. They also exhibit remarkable resistance against catalyst poisons at high temperatures. However, traditional perovskite oxides prepared via high-temperature reactions often possess smaller specific surface areas, which is not conducive to the exposure of catalyst active sites, thereby hindering the activity of perovskite catalysts. Therefore, developing novel perovskite materials with high performance and stability remains a challenge.

This Special Issue aims to serve as a platform for researchers to present their latest advancements and breakthroughs in the preparation and application of novel perovskite catalysts. We warmly invite the submission of original research papers, comprehensive review articles, and short communication letters on this topic.

Dr. Baofang Jin
Guest Editor

Manuscript Submission Information

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Keywords

  • perovskite-type oxides
  • doping
  • high performance
  • remarkable resistance
  • thermal stability

Published Papers (1 paper)

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Research

21 pages, 3930 KiB  
Article
Optimizing the Catalytic Performance of Ba1−xCexMnO3 and Ba1−xLaxCu0.3Mn0.7O3 Perovskites for Soot Oxidation in Simulated GDI Exhaust Conditions
by Nawel Ghezali, Álvaro Díaz-Verde and María José Illán-Gómez
Molecules 2024, 29(13), 3190; https://doi.org/10.3390/molecules29133190 - 4 Jul 2024
Viewed by 434
Abstract
Ba1−xCexMnO3 (BM-Cex) and Ba1−xLaxMn0.7Cu0.3O3 (BMC-Lax) perovskite-type mixed oxides were synthesized using the sol–gel method adapted for aqueous media with different values of x (0, 0.1, [...] Read more.
Ba1−xCexMnO3 (BM-Cex) and Ba1−xLaxMn0.7Cu0.3O3 (BMC-Lax) perovskite-type mixed oxides were synthesized using the sol–gel method adapted for aqueous media with different values of x (0, 0.1, 0.3, 0.6) to estimate the effect of the degree of the partial substitution of Ba by Ce or La on the structure and properties that are relevant for their use as catalysts for gasoline direct injection (GDI) soot oxidation. The samples were deeply characterized by ICP-OES, XRD, XPS, N2 adsorption, H2-TPR, and O2-TPD, and their potential as catalysts for soot oxidation has been analyzed in various scenarios that replicate the exhaust conditions of a GDI engine. By comparing the catalytic performance for soot oxidation of the two tested series (BM-Cex and BMC-Lax) and in the two conditions used (100% He and 1% O2 in He), it could be concluded that (i) in the absence of oxygen in the reaction atmosphere (100% He), BMC-La0.1 is the best catalyst, as copper is also able to catalyze the soot oxidation; and (ii) if oxygen is present in the reaction atmosphere (1% O2/He), BM-Ce0.1 is the most-active catalyst as it presents a higher proportion of Mn(IV) than BMC-La0.1. Thus, it seems that the addition of an amount of Ce or La higher than that corresponding to x = 0.1 in Ba1−xCexMnO3 and Ba1−xLaxCu0.3Mn0.7O3 does not allow us to improve the catalytic performance of BM-Ce0.1 and BMC-La0.1 for soot oxidation in the tested conditions. Full article
(This article belongs to the Special Issue Preparation and Application of Novel Perovskite Catalysts)
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