Wu Juan, Ye Runping, Xu Dong-Jie, Wan Lingzhong, Reina Tomas Ramirez, Sun Hui, Ni Ying, Zhou Zhang-Feng, Deng Xiaonan
Institute of Cotton, Anhui Academy of Agricultural Sciences, Hefei, China.
Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, Institute of Applied Chemistry, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, China.
Front Chem. 2022 Aug 5;10:961355. doi: 10.3389/fchem.2022.961355. eCollection 2022.
The rapid economic and societal development have led to unprecedented energy demand and consumption resulting in the harmful emission of pollutants. Hence, the conversion of greenhouse gases into valuable chemicals and fuels has become an urgent challenge for the scientific community. In recent decades, perovskite-type mixed oxide-based catalysts have attracted significant attention as efficient CO conversion catalysts due to the characteristics of both reversible oxygen storage capacity and stable structure compared to traditional oxide-supported catalysts. In this review, we hand over a comprehensive overview of the research for CO conversion by these emerging perovskite-type mixed oxide-based catalysts. Three main CO conversions, namely reverse water gas shift reaction, CO methanation, and CO reforming of methane have been introduced over perovskite-type mixed oxide-based catalysts and their reaction mechanisms. Different approaches for promoting activity and resisting carbon deposition have also been discussed, involving increased oxygen vacancies, enhanced dispersion of active metal, and fine-tuning strong metal-support interactions. Finally, the current challenges are mooted, and we have proposed future research prospects in this field to inspire more sensational breakthroughs in the material and environment fields.
快速的经济和社会发展导致了前所未有的能源需求和消耗，从而产生了污染物的有害排放。因此，将温室气体转化为有价值的化学品和燃料已成为科学界面临的一项紧迫挑战。近几十年来，钙钛矿型混合氧化物基催化剂因其与传统氧化物负载催化剂相比具有可逆储氧能力和稳定结构的特点，作为高效的CO转化催化剂受到了广泛关注。在这篇综述中，我们全面概述了这些新兴的钙钛矿型混合氧化物基催化剂用于CO转化的研究。介绍了在钙钛矿型混合氧化物基催化剂上进行的三种主要的CO转化反应，即逆水煤气变换反应、CO甲烷化反应和甲烷的CO重整反应及其反应机理。还讨论了提高活性和抗积碳的不同方法，包括增加氧空位、增强活性金属的分散以及微调强金属-载体相互作用。最后，讨论了当前面临的挑战，并提出了该领域未来的研究前景，以激发材料和环境领域更多令人瞩目的突破。
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