Cu/In_(2) O_(3)界面作用增强CO_(2)催化加氢性能  

Interfacial interaction of Cu/In_(2)O_(3) to enhance performance of CO_(2) catalytic hydrogenation

作　　者：张颖[1,2] 兰晓孟 孔垂旸 苏玉莹 汲宇 ZHANG Ying;LAN Xiaomeng;KONG Chuiyang;SU Yuying;JI Yu(College of Chemistry and Chemical Engineering in China University of Petroleum(East China),Qingdao 266580,China;State Key Laboratory of Heavy Oil Processing in China University of Petroleum(East China),Qingdao 266580,China)

机构地区：[1]中国石油大学(华东)化学化工学院,山东青岛266580 [2]中国石油大学(华东)重质油国家重点实验室,山东青岛266580

出　　处：《中国石油大学学报（自然科学版）》2023年第2期166-172,共7页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家重点研发项目(2018YFE0118200);山东省泰山学者攀登计划项目(tspd20210308);“111”创新引智基地项目(B13031)。

摘　　要：采用水热法结合沉淀沉积法制备出具有高度分散性和高活性的Cu-h-In_(2)O_(3)催化剂。研究表明:Cu和In_(2)O_(3)界面间存在较强相互作用,Cu的负载促进h-In_(2)O_(3)表面氧空位的形成和氢溢出效应,增强Cu-h-In_(2)O_(3)催化剂对H_(2)和CO_(2)的活化能力,从而提升催化剂的活性和稳定性;质量分数为1%的Cu-h-In_(2)O_(3)催化剂上发生的是甲酸盐路径;在280℃和3 MPa反应条件下,质量分数为1%的Cu-h-In_(2)O_(3) CO_(2)转化率为4%,甲醇选择性为71%,甲醇生成率可达2.79 mol·L^(-1)·h^(-1),且表现出良好的稳定性。One Cu-h-In_(2)O_(3) catalyst with high dispersion and high activity was prepared by hydrothermal method and precipitation deposition method.The results show that there exists strong interaction between Cu and In_(2)O_(3) interface.The Cu loading causes a strong hydrogen spillover effect,which further promotes the formation of oxygen vacancies on h-In_(2)O_(3).The enhanced ability for activation of hydrogen and CO_(2) on Cu-h-In_(2)O_(3) catalyst causes the high activity in CO_(2) hydrogenation.In-situ DRIFT confirms that formate pathway is the most favored route for CO_(2) hydrogenation to methanol on the 1%Cu-h-In_(2)O_(3) catalyst.Under the reaction conditions of 280℃and 3 MPa,the mass fraction of 1%Cu-h-In_(2)O_(3) CO_(2) conversion is 4%,methanol selectivity was 71%,methanol formation rate is 2.79 mol·L^(-1)·h^(-1),and shows good stability.

关 键 词：二氧化碳加氢 氧化铟 金属-载体相互作用 高分散 

分 类 号：TQ426[化学工程]