化工进展2024，Vol.43Issue(3)：1328-1341,14.DOI:10.16085/j.issn.1000-6613.2023-0477
锆改性Cu/SiO2催化剂催化3-羟基丙酸甲酯选择性加氢
Selective hydrogenation of methyl 3-hydroxypropionate over zirconium-modified Cu/SiO2 catalysts
摘要
Abstract
A series of the zirconium(Zr)-modified Cu/SiO2 catalysts were synthesized by ammonia-evaporation method and applied in the gas-phase hydrogenation of methyl 3-hydroxypropionate(3-HMP)to 1,3-propanediol(1,3-PDO).N2 adsorption-desorption,XRD,ICP-OES,H2-TPR,NH3-TPD,CO2-TPD,FTIR,TG-DTG,HRTEM,XPS and AES techniques were used for detailed characterizations.Introduction of the Zr species results in a strong interactions between the Cu and Zr species,leading to the generation of more copper phyllosilicate,and thus increasing the specific surface area of the catalyst as well as reducing the particle sizes of the copper species.The addition of Zr also made the copper species better be dispersed over the SiO2 support,increased the Cu+ content and enhanced the electronic absorption of the substrate 3-HMP by the acyl and methoxide groups.Compared with the unmodified Cu/SiO2 catalyst,the Zr-added(0.5%)Cu/SiO2 catalyst showed better catalytic performance.The conversion of 3-HMP as 96.0%was achieved along with the 1,3-PDO selectivity of 84.3%,Resulting in a total yield of 80.9%for 1,3-PDO.These were the best results obtained currently at a high liquid hourly space velocity(LHSV)of 0.10h-1.关键词
3-羟基丙酸甲酯/加氢/1,3-丙二醇/铜/二氧化硅/Zr改性Key words
methyl 3-hydroxypropionate/hydrogenation/1,3-propanediol/Cu/SiO2/Zr modification分类
化学化工引用本文复制引用
李伟杰,康金灿,张传明,林丽娜,李昌鑫,朱红平..锆改性Cu/SiO2催化剂催化3-羟基丙酸甲酯选择性加氢[J].化工进展,2024,43(3):1328-1341,14.基金项目
国家自然科学基金(21972112,22172123). （21972112,22172123）
