文献类型：期刊文献

英文题名：Ga modulation of C1 intermediates at Cu-FeOx interfaces for efficient CO2 hydrogenation to ethanol

作者：Ma, Yuling[1];Liu, Yangqin[1];Huang, Zeyi[1];Han, Xin[2];Ye, Lei[1];Qin, Xinglong[1];Xu, Haitao[1];Kong, Lingtao[3];Li, Jiangbing[3];Zhang, Jian[4];Pu, Xin[1,3];Liu, Jichang[1,3]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Green Chem Engn & Ind Catalysis, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[3]Shihezi Univ, Sch Chem & Chem Engn, State Key Lab Incubat Base Green Proc Chem Engn, Shihezi 832003, Xinjiang, Peoples R China;[4]Xinjiang Jiayuheng Energy Technol Co Ltd, Huyanghe 834034, Xinjiang, Peoples R China

年份：2025

卷号：364

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20251218069323);WOS:【SCI-EXPANDED(收录号:WOS:001452194500001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (U22B20141) , the National Natural Science Foundation of China (22408107) , the Shanghai Sailing Program of China (23YF1409200) , and the China Postdoctoral Science Foundation (GZC20230800) .

语种：英文

外文关键词：CO2 hydrogenation; Ethanol; FeCu-based catalyst; C1 intermediate

摘要：Hydrogenation of CO2 into alcohols enables the recycling of carbon resources, but the efficient conversion of C1 intermediates to C2+ alcohols is still a significant challenge. Herein, Ga2O3 was employed as an electronic modulator to facilitate the formation of an Fe5C2-{Cu-FeGaOx} structure on FeCu-based catalysts for improving ethanol selectivity. At 340 degrees C, 5 MPa, and 6000 mL center dot gcat- 1 center dot h- 1, the ethanol selectivity of FeCuGaZn-0.75 catalyst was 23.1 %, which was 2.2 times higher than that of FeCuZn catalyst. The Cu-FeGaOx interface was strengthened due to the introduction of Ga2O3 promoter, which contributed to the stabilization of Cu active center and weakened the strong adsorption of intermediate CO. Notably, the carburization of Fe3O4 in the FeCuGaZn-0.75 catalyst was suppressed, leading to a 9.6 % reduction in the content of Fe5C2. Furthermore, the Ga2O3 promoter effectively modulated both the non-dissociative (*CO) and dissociative activities (*CHx) of CO intermediates in the Fe5C2-{Cu-FeGaOx} structure, resulting in an improved ethanol space-time yield of 88.9 mg center dot gcat work provides a high-performance catalyst and a design strategy to regulate the equilibrium of C1 intermediates for CO2 hydrogenation to ethanol.