热驱动CO2多相催化合成化学品研究进展

Research progress on thermal catalytic conversion of carbon dioxide

摘要:

由于CO₂分子较高的化学惰性,导致其选择性活化及可控转化极具挑战。相比于电和光驱动CO₂催化转化,热驱动CO₂多相催化转化反应是操作简便、目标产物可调且产品收率较高的方法。通过该类反应实现CO₂还原或非还原制备多种化学品既可促进CO₂的资源化利用,又可有效缓解温室效应,在环保、能源和材料等领域具有重要意义。本综述基于作者在CO₂捕集和转化方面的研究工作,结合近年来国内外的相关文献,对目前热驱动多相催化CO₂转化为CO、CH₄、甲酸、甲醇、碳氢化合物和其它精细化学品的研究现状进行综合评述。重点讨论反应机理、所用催化剂及反应体系的研究进展,并对其未来的研究方向进行了前景展望和探讨。

Abstract:

Due to the high chemical inertness of CO₂ molecules, the selective activation and controllable conversion of CO₂ become extremely challenging. Compared with electric- or photo-driven catalytic conversion of CO₂, the thermal-driven heterogeneous catalytic conversion of CO₂ is a simple method with adjustable target products and high product yield. Most importantly, the value-added products obtained from the reduction or non-reduction of CO₂ can effectively promote the utilization of CO₂ and alleviate the greenhouse effect, which is of great significance in the fields of environmental protection, energy, and materials. Based on the author"s research work on CO₂ capture and conversion, this review summarizes the current developments and improvements in the thermal-driven heterogeneous catalytic conversion of CO₂ toward the synthesis of CO, CH₄, formic acid, methanol, hydrocarbons, and other fine chemicals in terms of the reaction mechanism, the improvements of catalyst and reaction process. Besides, the problems and limitations of this research field are discussed and the future development direction is prospected.