金属有机骨架材料在二氧化碳加氢中的应用

Application of metal-organic frameworks in CO2 hydrogenation

  • 摘要: 大气中二氧化碳(CO2)浓度的急剧增加引起了人们的关注,并提出了许多将CO2转化为高价值化学品的策略。金属有机框架材料(MOFs)由于其独特的孔隙率、大的比表面积、丰富的孔结构、多活性中心、良好的稳定性和可回收性,可用于二氧化碳的捕获和催化转化。基于晶体多孔材料的金属有机骨架(MOF)设计和合成的各种功能纳米材料可以作为多相催化剂或载体/前体来应对这些挑战。在本文中,笔者将主要关注MOFs在催化二氧化碳加氢领域的最新研究进展,包括催化加氢制备一氧化碳、甲烷、甲酸、甲醇和烯烃,分析了基于MOFs的催化剂的合成方法和提高催化活性的原因。介绍了提高新型MOF材料的催化活性和探索新的CO2转化可行的策略。讨论了MOF型催化剂在CO2化学转化中的主要挑战和机遇,对本研究领域中进一步的发展进行了简要的展望。

     

    Abstract: The dramatic increase in atmospheric CO2 concentrations has attracted people's attention, and many strategies have been developed to convert CO2 into high-value chemicals. Metal-organic frameworks (MOFs), as a class of versatile materials, can be used in the CO2 capture and conversion because of their unique porosity, large specific surface area, rich pore structure, multiple active centers, good stability and recyclability. Various functional nanomaterials have been designed and synthesized based on metal organic framework (MOF) of crystalline porous materials to meet these challenges. Herein, in this review, the latest processes of MOFs in field the of CO2 hydrogenation to carbon monoxide, methane, formic acid, methanol and olefins are summarized, and the synthesis methods of catalysts based on MOFs and the reasons for their high catalytic activity are analyzed. Besides, a brief introduction to improve the catalytic activity of the new MOF material and explore the feasible strategies for CO2 conversion are advised. Finally, the paper discusses the main challenges and opportunities of MOF-type catalysts in CO2 chemical conversion, and presents a brief outlook on further developments in this research area.

     

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