低碳化学与化工2026，Vol.51Issue(6)：52-64,13.DOI:10.12434/j.issn.2097-2547.20250276
载体形貌对Cu/SiO2催化草酸二甲酯加氢制乙二醇反应稳定性的影响
Effects of support morphologies on stability of Cu/SiO2 for catalytic hydrogenation of dimethyl oxalate to ethylene glycol
摘要
Abstract
The hydrogenation of dimethyl oxalate(DMO)to produce ethylene glycol(EG)is a green route that combines economic viability with technical feasibility.Nanoparticle-,bulk-and sphere-shaped SiO2 supports were prepared by hydrothermal method for supporting Cu-based catalysts,aiming to investigate the effect of support morphologies on the stability of Cu/SiO2 in DMO hydrogenation.The physicochemical properties of the catalysts were characterized by XRD,SEM,XPS,H2-TPR and so on.The results show that the stability of the Cu/SiO2 catalyst is affected by the morphologies of the SiO2 support.After 70 h of hydrogenation of DMO to EG,the DMO conversion rate and EG selectivity of the Cu/SiO2-N(N represents nanoparticle-shaped)catalyst still reaches 98.4%and 89.5%,respectively,without significant deactivation.Compared with the bulk-and sphere-shaped SiO2-supported catalysts,as well as commercial catalysts,the Cu/SiO2-N catalyst exhibits higher stability.The improvement in stability is mainly due to the higher relative content ratio of Cu+to Cu0 and better anti-carbon deposition performance.关键词
草酸二甲酯/加氢/乙二醇/载体形貌/稳定性Key words
dimethyl oxalate/hydrogenation/ethylene glycol/support morphology/stability分类
化学化工引用本文复制引用
谢冬民,方松,陈柳云,徐超,肖本端,苏通明,秦祖赠..载体形貌对Cu/SiO2催化草酸二甲酯加氢制乙二醇反应稳定性的影响[J].低碳化学与化工,2026,51(6):52-64,13.基金项目
广西科技重大专项项目(桂科AA23062018). （桂科AA23062018）
