低碳化学与化工2025，Vol.50Issue(2)：61-68,8.DOI:10.12434/j.issn.2097-2547.20240164
Zr助剂含量对Cu/SiO2纳米管催化草酸二甲酯加氢制乙二醇反应性能的影响
Effects of Zr additive contents on catalytic performances of Cu/SiO2 nanotube catalysts for dimethyl oxalate hydrogenation to ethylene glycol
摘要
Abstract
With the rapid development of polyester industry in China,the demand for ethylene glycol(EG)continues to increase,and the use of additives to modify copper-based catalysts has become one of the effective strategies to improve the yield of ethylene glycol.Zr additive-doped Cu/SiO2 nanotube catalysts were prepared by one-pot method for dimethyl oxalate hydrogenation to ethylene glycol.The catalysts were characterized by XRD,N2 adsorption/desorption,FT-IR,TEM,H2-TPR and XPS.The effects of Zr contents(n(Zr)/n(Cu))on catalytic performances was investigated.The results show that introduction of appropriate amount of Zr(n(Zr)/n(Cu)=0.05)is conducive to the copper species uniform distribution on the nanotubes,which improves the dispersion of copper species.In addition,the electron transfer between Cu and Zr enhances the interaction between metals,which is conducive to the stability of Cu+species on catalyst surface,thereby improving the activity and stability of catalyst.Under the conditions of reaction temperature of 210℃,reaction pressure of 2.4 MPa,n(H2)/n(DMO)of 100,weight hourly space velocity of 0.405 h-1 and reaction time of 40 h,Cu-Zr0.05/SiO2 shows the best catalytic performance.The DMO conversion and EG selectivity of Cu-Zr0.05/SiO2 reach 99.1%and 91.9%,respectively.关键词
乙二醇/草酸二甲酯加氢/Zr助剂/Cu/SiO2纳米管Key words
ethylene glycol/dimethyl oxalate hydrogenation/zirconia additive/Cu/SiO2 nanotube分类
化学化工引用本文复制引用
赵丽娜,张慧丹,赵金仙,任军..Zr助剂含量对Cu/SiO2纳米管催化草酸二甲酯加氢制乙二醇反应性能的影响[J].低碳化学与化工,2025,50(2):61-68,8.基金项目
国家自然科学基金(22179091,21808154). （22179091,21808154）
