文献类型：期刊文献

英文题名：UiO-n-membrane regulate bifunctional catalysts GaZrOx/SAPO-34@UiO-n improving CO2 conversion to light olefins

作者：Cheng, Denghui[1];Lv, Xia[1];Fan, Xuelin[5];Sun, Jiaqiang[2];Zhao, Guofeng[2];Zhang, Lidong[3];Liu, Jichang[1,4];Ge, Jianping[5];Xu, Haitao[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[2]Anhui Normal Univ, Coll Chem & Mat Sci, Anhui Basic Discipline Res Ctr Clean Energy & Cat, Wuhu 241002, Peoples R China;[3]Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China;[4]Shihezi Univ, Sch Chem & Chem Engn, Key Lab Green Proc Chem Engn Xinjiang Bingtuan, Shihezi 832003, Peoples R China;[5]East China Normal Univ, Sch Chem & Mol Engn, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China

年份：2024

卷号：358

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20243016735814);WOS:【SCI-EXPANDED(收录号:WOS:001369179900001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (No. 21371058, No. 22179038 and Grant 21878090), the Special Project for Peak Carbon Dioxide Emissions-Carbon Neutrality (21DZ1206700) from the Shanghai Municipal Science and Technology Commission, the Incubation Program of Youth Innovation of Shandong Province (2021KJ100), and the Academic Promotion Program of Shandong First Medical University (2019QL008).

语种：英文

外文关键词：CO2 conversion; Light olefins; UiO-n membrane; Bifunctional catalyst; Tandem reaction

摘要：Assembling synergistic-functional nanocatalysts is an effective strategy to achieve highly both active and selective conversion of CO2 into light olefins. Herein, the bifunctional GaZrOx/SAPO-34@UIO-n (n = 66, 66-NH2, 67, 67-NH2, 68, 69) catalyst, UiO-n membrane encapsulating monodispersed SAPO-34 zeolite to get the core-shell SAPO-34@UiO-n (S@Un) and then mixed with GaZrOx, is assembled for CO2 hydrogenation to light olefins. The GaZrOx/SAPO-34 shows C-2(=)-C-4(=) selectivity of only 62.1 %, but the selectivity to C-2(=)-C-4(=) reaches 81.8-85.4 % for the GaZrOx/S@Un. Optimizing UiO-n membrane, the GaZrOx/S@U68 exhibits excellent performance for CO2 conversion into light olefins. The selectivity to C-2(=)-C-4(=) reaches 85.4 % at 19.4 % CO2 conversion and 48.1 % CO selectivity. DOS calculations indicates that GaZrOx can effectively promote CO2 hydrogenation. The results reveal the UiO-n membrane-encapsulating-SAPO-34 synergy-enhancing CO2 conversion to light olefins besides the good catalytic matching of GaZrOx to SAPO-34 in the bifunctional catalyst component.