Research progress on catalysts for CO2 hydrogenation to light olefins

CO2 hydrogenation to low-carbon olefins can reduce fossil fuel consumption, also convert and utilize CO2, the waste product from chemical industry, to reduce environmental problems while synthesize essential chemical products needed in people's lives. Rational development and utilization of CO2 can replace usage of fossil fuels, which is of great significance to social and economic development. In this review, the reaction mechanism of CO2 hydrogenation to light olefins was described in detail. In view of the two routes for CO2-Fischer-Tropsch direct method (CO2-FT) and methanol-mediated indirect hydrogenation of CO2 (CO2-MTO) to low-carbon olefins, the effects of catalyst types, promoters and substrates used in the two routes on CO2 conversion and olefin selectivity were discussed, respectively. Finally, the research direction of catalysts for CO2 hydrogenation to low-carbon olefins was prospected. © 2023 Fine Chemicals. All rights reserved.