低碳化学与化工2025，Vol.50Issue(6)：43-51,9.DOI:10.12434/j.issn.2097-2547.20240242
预处理方式对Cu/PAC催化剂草酸酯加氢制乙醇酸甲酯性能的影响
Effects of pre-treatment methods on performances of Cu/PAC catalysts for dimethyl oxalate hydrogenation to methyl glycolate
摘要
Abstract
As the demand for degradable plastic polyglycolic acid(PGA)has been increasing in China,thus the demand for methyl glycolate(MG)as a raw material for the synthesis of PGA has also rapidly increased.A series of Cu/PAC-x catalysts were prepared by impregnation method for the hydrogenation of dimethyl oxalate(DMO)to MG by pretreatment of pitch-based activated carbon(PAC),and the catalytic performances of Cu/PAC-x catalysts were investigated.The Cu/PAC-x catalysts were characterized by N2 adsorption/desorption,FT-IR,XRD,TEM,H2-TPR,XPS and CO-TPD,and the effects of different pre-treatment methods of the PAC on the catalytic performances of catalysts were investigated.The results show that mixed acid treatment can improve the Cu+/Cu0 ion pairs activation performances of catalysts,thereby improving the catalyst activity.At 210℃,1.9 MPa,n(H2):n(DMO)of 170 and space velocity of 0.26 g/(g·h),the catalytic activity of Cu/PAC-SN catalyst is the highest,and the DMO conversion rate,MG selectivity and yield rate of Cu/PAC-SN catalyst reach 85.4%,72.8%and 62.2%,respectively.关键词
乙醇酸甲酯/草酸二甲酯/预处理/Cu/PAC催化剂Key words
methyl glycolate/dimethyl oxalate/pre-treatment/Cu/PAC catalysts分类
化学工程引用本文复制引用
恩海峰,李炳文,田慧毓,赵金仙..预处理方式对Cu/PAC催化剂草酸酯加氢制乙醇酸甲酯性能的影响[J].低碳化学与化工,2025,50(6):43-51,9.基金项目
国家自然科学基金(22179091,21808154). （22179091,21808154）
