硅藻土铜铋基催化剂炔醛化反应合成1,4-丁炔二醇的研究  

Synthesis of 1,4-butynediol via ethynylation of formaldehyde over Cu/Bi/kieselguhr catalyst

作　　者：陈可祥 林柯静 郑体彦 王鹏 高峰 杨桂花[1] CHEN Ke-xiang;LIN Ke-jing;ZHENG Ti-yan;WANG Peng;GAO Feng;YANG Gui-hua(Key Laboratory of Oil&Gas Fine Chemicals of Ministry of Education and Xinjiang Uyghur Autonomous Region,College of Chemistry and Chemical Engineering,Xinjiang University,Urumqi 830046,China)

机构地区：[1]石油天然气精细化工教育部/自治区重点实验室,新疆大学化学化工学院,新疆乌鲁木齐830046

出　　处：《现代化工》2021年第3期130-133,139,共5页Modern Chemical Industry

基　　金：新疆维吾尔自治区自然科学基金(2019D01C046);新疆大学博士科研启动基金(BS160226);国家级大学生创新训练计划项目(201910755022)。

摘　　要：利用浸渍法及固相研磨法制备了以硅藻土为载体的铜铋基催化剂,并在常压进行炔醛化反应合成1,4-丁炔二醇。对制备的催化剂进行XRD、H_(2)-TPR、SEM、TEM及氮气低温吸附脱附等表征分析。结果表明,固相研磨法制备的铜铋基催化剂拥有最好的催化活性,常压反应7 h甲醛的转化率为70%,1,4-丁炔二醇的选择性为86%,与商业催化剂的活性相当。这主要归因于该催化剂比表面积较大、氧化铜颗粒较小(12 nm),氧化铜能够在硅藻土表面及孔洞内较均匀分散,具有较多的活性中心。Cu-Bi based catalysts loaded on kieselguhr are prepared by impregnation and solid grinding methods,respectively,and applied in the ethynylation of formaldehyde for synthesis of 1,4-butynediol.These catalyst samples are characterized by XRD,H_(2)-TPR,SEM,TEM,N_(2) adsorption/desorption.It is found that Cu-Bi based catalyst prepared by solid grinding method exhibits the higher catalytic activity,over which the conversion of formaldehyde can reach 70% and the selectivity of 1,4-butynediol achieves 86% after the reaction has performed for 7 h under atmospheric pressure.The performance is equivalent to that of commercial catalyst.It is attributed to the catalysts with the bigger surface area,smaller Cu O particles size and Cu O well dispersed in kieselguhr,forming more active centers.

关 键 词：1 4-丁炔二醇 氧化铜 催化剂 分散性 

分 类 号：TQ223.162[化学工程—有机化工] TQ426