低碳化学与化工2025，Vol.50Issue(5)：110-119,10.DOI:10.12434/j.issn.2097-2547.20240284
活性炭负载无卤素铜催化剂催化液相甲醇一步氧化合成甲缩醛性能
Performance of halogen-free activated carbon loaded copper catalysts for one-step oxidation of liquid-phase methanol to dimethoxymethane
摘要
Abstract
To solve the defects of corrosion on stainless steel equipment with halogen-containing copper catalysts in the one-step oxidation of liquid methanol to synthesize dimethoxymethane,halogen-free activated carbon loaded copper(Cu/AC)catalysts were prepared by equal volume impregnation method.The catalytic performance of Cu/AC catalysts for the one-step oxidation of liquid-phase methanol to dimethoxymethane was investigated.The physicochemical properties of the Cu/AC catalysts were characterized by N2 adsorption/desorption,XRD,XPS,TEM and H2-TPR.The effects of Cu loadings and calcination temperatures on the structure and catalytic performance of Cu/AC catalysts were investigated.The results show that when the Cu loading(mass fraction)is 5％and the calcination temperature is 200 ℃,the Cu particles are dispersed uniformly on the surface of the activated carbon with the smallest particle size(12.0 nm)and Cu0 and Cu+contents are the highest and the catalyst shows the best catalytic performance.The methanol conversion and dimethoxymethane selectivity are 8.1％and 92.7％,respectively,under the conditions of temperature of 130 ℃ and O2 pressure of 3 MPa.Among them,the selectivity of dimethoxymethane increases from 93.9％in the first cycle to 100.0％after 5 cycles of 5Cu/AC-200 catalyst.关键词
无卤素铜催化剂/活性炭/甲缩醛/一步氧化合成Key words
halogen-free copper catalyst/activated carbon/dimethoxymethane/one-step oxidation synthesis分类
化学化工引用本文复制引用
李心灵,林慧博,卢洁,肖婉婧,李文杰,何梓瑞,邓志勇..活性炭负载无卤素铜催化剂催化液相甲醇一步氧化合成甲缩醛性能[J].低碳化学与化工,2025,50(5):110-119,10.基金项目
四川省科技计划(2021YFG0225,2024ZHCG0126) （2021YFG0225,2024ZHCG0126）
四川省中央引导地方科技发展专项自由探索类基础研究(2022ZYD0049) （2022ZYD0049）
大学生创新创业训练项目(202410621346). （202410621346）
