热催化氧化铈基材料中氧空位形成策略

IF 11.5 Q1 CHEMISTRY, PHYSICAL

Chem Catalysis Pub Date : 2025-06-17 DOI:10.1016/j.checat.2025.101423

Sinmyung Yoon, Jihun Kim, Kwangjin An

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引用次数: 0

摘要

由于其优异的储氧能力，CeO2是多相催化的重要载体材料。CeO2氧空位（VO）密度严重影响涉及氧的热催化过程，如CO氧化、CO2加氢和挥发性有机化合物氧化。本文综述了近年来控制CeO2中VO的策略，包括晶格掺杂、纳米结构控制和外部还原缺陷工程，以及它们对热催化反应的影响。我们提出了多种原位表征技术来阐明反应过程中晶格氧迁移率和催化反应活性之间的关系。讨论了多种方法联合实现协同增强CeO2还原性的策略。对VO调节策略的全面探索为优化氧介导热催化中基于ceo2的系统提供了见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Strategies for oxygen vacancy formation in CeO2-based materials for thermal catalysis

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Strategies for oxygen vacancy formation in CeO2-based materials for thermal catalysis

CeO₂ is a prominent support material for heterogeneous catalysis owing to its exceptional oxygen storage capacity. CeO₂ oxygen vacancy (V_O) density critically influences thermal catalytic processes involving oxygen species, such as CO oxidation, CO₂ hydrogenation, and volatile organic compound oxidation. This review examines recent strategies for controlling V_O in CeO₂, including lattice doping, nanostructure control, and defect engineering via external reduction, as well as their effects on thermal catalytic reactions. We present diverse in situ characterization techniques to elucidate the relationship between lattice oxygen mobility and catalytic reactivity during reactions. Strategies combining multiple approaches to achieve synergistic CeO₂ reducibility enhancement are discussed. A comprehensive exploration of V_O regulation strategies provides insights into optimizing CeO₂-based systems in oxygen-mediated thermal catalysis.

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来源期刊

Chem Catalysis

CiteScore

10.50

自引率

6.40%

发文量

期刊介绍： Chem Catalysis is a monthly journal that publishes innovative research on fundamental and applied catalysis, providing a platform for researchers across chemistry, chemical engineering, and related fields. It serves as a premier resource for scientists and engineers in academia and industry, covering heterogeneous, homogeneous, and biocatalysis. Emphasizing transformative methods and technologies, the journal aims to advance understanding, introduce novel catalysts, and connect fundamental insights to real-world applications for societal benefit.