低碳化学与化工2025，Vol.50Issue(3)：47-57,11.DOI:10.12434/j.issn.2097-2547.20240193
Ti3C2 MXene负载Cu基催化剂的草酸酯加氢制乙醇酸甲酯催化性能
Catalytic performance of Cu-based catalyst supported on Ti3C2 MXene for hydrogenation of dimethyl oxalate to methyl glycolate
摘要
Abstract
Methyl glycolate(MG),as a key raw material for the production of degradable plastic polyethylene glycol acid,has broad market space and high economic value.Hydrogenation of dimethyl oxalate(DMO)to MG is one of the ways to realize the conversion and value-added utilization of coal and natural gas resources.However,MG is the product of unsaturated hydrogenation of DMO,and the existing catalysts are difficult to achieve its efficient preparation.Although Cu-based catalysts are widely used in DMO hydrogenation,they are more inclined to catalyze deep hydrogenation of DMO.Alk-Ti3C2 MXene supports were prepared through alkali treatment using two-dimensional layered Ti3C2 MXene as the support,and alk-Ti3C2 MXene supported Cu-based catalyst was prepared by ultrasonic impregnation method.The results show that the alkali treatment can not only increase the interlayer spacing(from 1.02 nm to about 1.25 nm)and surface area of the supports(from 3.61 m2/g to more than 7.10 m2/g),but also increase the number of-OH on the support surface,thereby regulating the interaction between—OH on the support surface and Cu species,ultimately affecting the particle size and valence state composition of Cu species.It is worth mentioning that the Cu/Na-Ti3C2 MXene catalyst supported on Na-Ti3C2 MXene after NaOH treatment shows good catalytic performance and stability.The MG yield is up to 60.63％(reaction time of 26 h)and no deactivation occurs within 230 h.The relatively suitable Cu particle size(43.4 nm),high n(Cu0)/n(Cu0+Cu+)(71.17％)and the strong interaction between Cu species and the surface—OH on the support together endow the Cu/Na-Ti3C2 MXene catalyst with good catalytic performance and stability.关键词
Ti3C2 MXene/草酸二甲酯加氢/Cu基催化剂/乙醇酸甲酯/金属-载体相互作用Key words
Ti3C2 MXene/dimethyl oxalate hydrogenation/Cu-based catalyst/methyl glycolate/metal-support interaction分类
化学工程引用本文复制引用
石晓丹,赵江涛,张雨,艾培培,黄伟..Ti3C2 MXene负载Cu基催化剂的草酸酯加氢制乙醇酸甲酯催化性能[J].低碳化学与化工,2025,50(3):47-57,11.基金项目
国家自然科学基金青年科学基金(22008166) （22008166）
山西省自然科学研究面上项目(202403021211029) （202403021211029）
山西省面上青年基金(201901D211047) （201901D211047）
山西省高等学校科技创新项目(2019L0185). （2019L0185）
