Cu-Ag/碳气凝胶催化剂在草酸二甲酯加氢反应中的性能  

Performance of carbon aerogel support Cu-Ag catalyst for DMO hydrogenation

作　　者：程铭 赵文宇 CHENG Ming;ZHAO Wenyu(Sinopec Research Institute of Petroleum Processing Co.,Ltd.,Beijing 100011,China;College of Chemical Engineering,Taiyuan University of Technology,Taiyuan 030024,Shanxi Province,China;Sinopec Maoming Petrochemical Company,Maoming 525000,Guangdong Province,China)

机构地区：[1]中国石油化工股份有限公司石油化工科学研究院,北京100011 [2]太原理工大学化学化工学院,山西太原030024 [3]中国石油化工股份有限公司茂名分公司,广东茂名525000

出　　处：《化学工程》2023年第11期61-66,共6页Chemical Engineering(China)

摘　　要：DMO(草酸二甲酯)加氢定向转化为MG(乙醇酸甲酯)对于工业生产具有重要意义,采用浸渍法制备25Cu-wAg/CA催化剂,通过添加Ag改变催化剂表面Cu^(0)和Cu^(+)分布,提高MG选择性。当Ag质量分数为7%、反应温度为220℃、压力为2.5 MPa、氢酯比(摩尔比)为120、液相空速[vLHS(DMO)]=0.5 h^(-1)时,25Cu-7Ag/CA催化剂表现出最好的加氢性能,此时DMO转化率为89.5%,MG选择性为94%。此外,催化剂在上述条件下连续反应200 h,DMO转化率和MG选择性基本保持不变。The directed conversion of DMO into MG through hydrogenation is great significance for industrial production.25Cu-w Ag/CA catalyst was prepared by impregnation method,and the MG selectivity was improved by altering the surface Cu^(0) and Cu^(+)distribution of the catalyst with Ag.The conversion is 89.5% for DMO and selectivity is 94% for MG over the optimized 25Cu-7Ag/CA catalyst under 220℃,2.5 MPa,H_(2)/DMO molar ration of 120 and v LHS(DMO)of 0.5 h^(-1).Besides,the conversion of DMO and the selectivity of MG nearly unchanged during 200 h.

关 键 词：25Cu-wAg/CA催化剂 加氢性能 MG选择性 

分 类 号：O643[理学—物理化学]