Thermocatalytic hydrogenation of CO2 into aromatics by tailor‐made catalysts: Recent advancements and perspectives

EcoMat

Mingbo Wu¹  Yang Wang¹  Noritatsu Tsubaki²  Xinhua Gao³ 

[1] College of New Energy, State Key Laboratory of Heavy Oil Processing China University of Petroleum (East China) Qingdao China;Department of Applied Chemistry Graduate School of Engineering, University of Toyama Gofuku Toyama Japan;State Key Laboratory of High‐efficiency Utilization of Coal and Green Chemical Engineering College of Chemistry & Chemical Engineering, Ningxia University Yinchuan China;

关键词: aromatics;    CO2 hydrogenation;    multifunctional catalyst;    practical application;    single‐pass;   

DOI  :  10.1002/eom2.12080

来源: DOAJ

【 摘 要 】

Abstract Considering the severe environmental issues brought by excessive carbon emissions, the utilization of CO2 as a feedstock for chemicals synthesis is gaining a lot of interest. CO2 hydrogenation into valuable chemicals using renewable energy is a promising strategy to alleviate the environmental pressures and reduce our strong dependence on fossil fuels simultaneously. Aromatics, as important chemicals in our daily life, can be synthesized by a tandem strategy that first converts CO2 into CO or methanol on Fe‐based active sites or reducible metal oxides, respectively, and then sequentially conducts CC coupling, dehydrogenation, and cyclization processes on acidic zeolites with unique topology structure for aromatics synthesis. This critical review focuses on the recent advancements in CO2 hydrogenation into high value‐added aromatics (CTA), in particular the key factors, such as the catalytic component, the acidity distribution of the zeolite, and the proximity effect between different active sites that regulate the aromatics selectivity. The reaction network and mechanism during the tandem process will be discussed to guide the rational design of highly efficient bifunctional/multifunctional catalysts for direct synthesis of aromatics by CO2 hydrogenation. Furthermore, the development directions and obstacles of CO2 utilization by hydrogenation technology will be predicted to pave the way for the practical application of greenhouse gas CO2 for valuable aromatics synthesis.

【 授权许可】

Unknown