络合剂对固相法Cu/ZnO/In_(2)O_(3)催化剂的CO_(2)加氢制甲醇反应性能的影响  

Effect of complexing agents on the performances of Cu/ZnO/In_(2)O_(3) catalysts for CO_(2) hydrogenation to methanol by solid-state grinding method

作　　者：赵福真[1] 郭孟 白瑞洁 张煜华[1] 李金林[1] ZHAO Fuzhen;GUO Meng;BAI Ruijie;ZHANG Yuhua;LI Jinlin(Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education&Hubei Key Laboratory of Catalysis and Materials Science,South-Central Minzu University,Wuhan 430074,China)

机构地区：[1]中南民族大学催化转化与能源材料化学教育部重点实验室暨催化材料科学湖北省重点实验室,武汉430074

出　　处：《中南民族大学学报（自然科学版）》2024年第4期433-438,共6页Journal of South-Central University for Nationalities：Natural Science Edition

基　　金：中央高校基本科研业务费专项资金资助项目(CPT22025)。

摘　　要：为了促进催化剂中Cu物种的分散,在金属硝酸盐中分别加入草酸、甲酸和柠檬酸,采用固态研磨合成Cu/ZnO/In_(2)O_(3)催化剂.结果表明:草酸的加入对Cu的分散效果最好,在280℃,2 MPa,3.6 L·gcat^(-1)·h^(-1),V(H2)∶V(CO_(2))=3∶1时,甲醇收率最高,达到2.1 mmol·gcat^(-1)·h^(-1).但甲酸在高温下会分解为CO_(2)和H_(2),导致制备的CuO/ZnO/In_(2)O_(3)催化剂部分还原,随后此催化剂在H_(2)预处理后被过度还原,形成Cu_(3)In_(7)合金相,导致甲醇产率降低.In order to promote the dispersion of Cu species in the catalyst,oxalic acid,formic acid,and citric acid were added to the metal nitrates,and Cu/ZnO/In_(2)O_(3) catalysts were synthesized by solid-state grinding.The results showed that the addition of oxalic acid had the best dispersion effect on Cu,and a maximum methanol yield of 2.1 mmol·gcat-1·h^(-1)was obtained at 280℃,2 MPa,3.6 L·gcat^(-1)·h^(-1),V(H_(2))∶V(CO_(2))=3∶1.However,formic acid decomposed into CO_(2) and H2 at high temperatures,leading to partial reduction of the CuO/ZnO/In_(2)O_(3) catalyst,followed by over-reduction after H_(2) pretreatment,forming Cu3In7 alloy phase,thereby reducing the methanol yield.

关 键 词：CO_(2)加氢 甲醇 Cu基催化剂 氧化铟 

分 类 号：O643.36[理学—物理化学]