Y/ZSM-5分子筛催化丙烯醛二乙缩醛和氨合成3-甲基吡啶  

Synthesis of 3-picoline from acrolein diethyl acetal with ammonia over Y/ZSM-5

作　　者：罗才武 谢超 彭怀德 张德 李刚[2] 魏月华 李伟光 LUO Cai-wu;XIE Chao;PENG Huai-de;ZHANG De;LI Gang;WEI Yue-hua;LI Wei-guang(School of Resource Environmental and Safety Engineering,University of South China,Hengyang 421001,China;State Key Laboratory of Safety and Health for Metal Mines,Maanshan 243000,China;Fujian Provincial Key Laboratory of Clean Energy Materials,Longyan University,Longyan 364012,China;Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China)

机构地区：[1]南华大学资源环境与安全工程学院,湖南衡阳421001 [2]金属矿山安全与健康国家重点实验室,安徽马鞍山243000 [3]龙岩学院福建省清洁能源材料重点实验室,福建龙岩364012 [4]中国科学院生态环境研究中心,北京100085

出　　处：《应用化工》2021年第3期584-587,593,共5页Applied Chemical Industry

基　　金：国家自然科学基金面上项目(51978648);中国博士后科学基金(2019M660824);湖南省自然科学基金(2018JJ3427);金属矿山安全与健康国家重点实验室开放基金(2019-JSKSSYS-04);福建省清洁能源材料重点实验室开放基金资助(QJNY-201802)。

摘　　要：合成3-甲基吡啶的催化剂主要为负载型ZSM-5,很少涉及组合分子筛。使用机械研磨-浸渍手段合成Y/ZSM-5分子筛,并用于气相条件下丙烯醛二乙缩醛和氨催化合成3-甲基吡啶。采用多种手段对催化剂进行了较详细的表征。结果表明,与Y和ZSM-5相比,Y/ZSM-5分子筛拥有更高的外表面积和更低的酸量。这些因素使得Y/ZSM-5具有更高的催化活性。本研究提供了一种新型催化剂合成3-甲基吡啶。The catalysts were predominately ZSM-5-based materials in the synthesis of 3-picoline from various pathways,and the composite zeolites involved scarcely.The Y/ZSM-5 catalysts were for the first time synthesized by the mechanical mixture and impregnation successive treatment,and then they were employed for the synthesis of 3-picoline from acrolein diethyl acetal and ammonia in a fixed-bed reactor.The catalysts were characterized by using several characterization techniques.The results showed that Y/ZSM-5 possessed higher external surface area and less concentration of acid sites.These factors had great effect on the catalytic activity and these a higher yield of 3-picoline was obtained over Y/ZSM-5.It offered a novel catalyst in the synthesis of 3-picoline.

关 键 词：丙烯醛二乙缩醛 3-甲基吡啶 吡啶 Y/ZSM-5 催化剂 

分 类 号：TQ253.2[化学工程—有机化工]