Chen Xiaodong, Chen Ya, Song Chunyu, Ji Peiyi, Wang Nannan, Wang Wenlong, Cui Lifeng
School of Materials Science and Engineering, Dongguan University of Technology, Dongguan, China.
Center for Clean Energy Technology, Faculty of Science, School of Mathematical and Physical Science, University of Technology Sydney, Sydney, NSW, Australia.
Front Chem. 2020 Aug 31;8:709. doi: 10.3389/fchem.2020.00709. eCollection 2020.
The reverse water-gas shift reaction (RWGSR), a crucial stage in the conversion of abundant CO into chemicals or hydrocarbon fuels, has attracted extensive attention as a renewable system to synthesize fuels by non-traditional routes. There have been persistent efforts to synthesize catalysts for industrial applications, with attention given to the catalytic activity, CO selectivity, and thermal stability. In this review, we describe the thermodynamics, kinetics, and atomic-level mechanisms of the RWGSR in relation to efficient RWGSR catalysts consisting of supported catalysts and oxide catalysts. In addition, we rationally classify, summarize, and analyze the effects of physicochemical properties, such as the morphologies, compositions, promoting abilities, and presence of strong metal-support interactions (SMSI), on the catalytic performance and CO selectivity in the RWGSR over supported catalysts. Regarding oxide catalysts (i.e., pure oxides, spinel, solid solution, and perovskite-type oxides), we emphasize the relationships among their surface structure, oxygen storage capacity (OSC), and catalytic performance in the RWGSR. Furthermore, the abilities of perovskite-type oxides to enhance the RWGSR with chemical looping cycles (RWGSR-CL) are systematically illustrated. These systematic introductions shed light on development of catalysts with high performance in RWGSR.
逆水煤气变换反应（RWGSR）是将大量一氧化碳转化为化学品或碳氢燃料过程中的关键步骤，作为一种通过非传统路线合成燃料的可再生系统，它已引起广泛关注。人们一直在持续努力合成用于工业应用的催化剂，重点关注催化活性、一氧化碳选择性和热稳定性。在本综述中，我们描述了与由负载型催化剂和氧化物催化剂组成的高效RWGSR催化剂相关的RWGSR的热力学、动力学和原子水平机制。此外，我们合理分类、总结并分析了诸如形貌、组成、促进能力以及强金属-载体相互作用（SMSI）的存在等物理化学性质对负载型催化剂上RWGSR的催化性能和一氧化碳选择性的影响。对于氧化物催化剂（即纯氧化物、尖晶石、固溶体和钙钛矿型氧化物），我们强调它们的表面结构、储氧能力（OSC）与RWGSR中的催化性能之间的关系。此外，还系统地阐述了钙钛矿型氧化物通过化学循环（RWGSR-CL）增强RWGSR的能力。这些系统介绍为开发在RWGSR中具有高性能的催化剂提供了思路。
