Zr的掺杂对催化剂Cu/SiO2活性的影响  

Influences on the Cu/SiO_2 Catalysts Doping with Zr

作　　者：聂航[1] 王琪[1,2,3] 丁丁[1] 刘荣[4] 沈浩[4] 

机构地区：[1]合肥工业大学化工学院可控化学与材料化工安徽省重点实验室,安徽合肥230009 [2]合肥工业大学材料科学与工程博士后流动站,安徽合肥230009 [3]安徽六国化工股份有限公司博士后工作站,安徽铜陵244021 [4]安徽六国化工股份有限公司,安徽铜陵244021

出　　处：《安徽化工》2015年第5期31-33,共3页Anhui Chemical Industry

摘　　要：采用溶胶凝胶法制备Cu/Si O2催化剂,考查了掺杂不同量的Zr对催化剂活性的影响,并运用H2-TPR、XRD、TEM对催化剂进行表征。结果表明:Zr的加入对催化剂的活性有很大提高,催化剂在温度200℃、压力3MPa、氢酯比为60的条件下反应,掺杂0.4%Zr的Cu/Si O2催化剂活性最高,草酸二甲酯的转化率为99.2%,乙二醇的选择性为93.9%。A series of Cu/SiO2 catalysts for the hydrogenation of dimethyl oxalate to ethylene glycol were prepared by the sol-gel method. Effects of the ammonia Zr value on the catalysts were in vestigated. The catalysts were characterized by the H2-TPR,XRD,TEM. The results showed that activity has greatly improved after adding Zr on the catalyst. Catalyst at a temperature of 200℃, a pressure of 3MPa, hydroquinone ratio of 60.the Cu/SiO2 catalysts doping of 0.4% Zr has the highest activity. The conversion of DMO and the selectivity to ethylene glycol achieved 99.2% and 93.9%, respectively.

关 键 词：草酸二甲酯 加氢 乙二醇 掺杂 

分 类 号：TQ225.242[化学工程—有机化工]