杂多酸催化剂催化吡啶合成3-甲基吡啶的工艺研究  

Study on the Synthesis of 3-Methylpyridine from Pyridine Catalysed by Heteropolyacid Catalysts

作　　者：谷顺明 张先龙 岳伟 温兰兰 赵伟杰 GU Shun-ming;ZHANG Xian-long;YUE Wei;WEN Lan-lan;ZHAO Wei-jie(Anhui Costar Biochemical Company Limited,Maanshan 243100,China)

机构地区：[1]安徽国星生物化学有限公司,安徽马鞍山243100

出　　处：《安徽化工》2024年第6期90-92,共3页Anhui Chemical Industry

摘　　要：采用磷钨酸、磷硅酸、磷钼酸三种固体酸中的任意一种,负载到MCM-41分子筛上,配制成负载型杂多酸催化剂。以吡啶和甲醇为原料,在流化床反应器中,采用35%的磷钨酸/MCM-41催化剂、35%的硅钨酸/MCM-41催化剂、35%的磷钼酸/MCM-41催化剂中的任何一种,催化剂用量为6 g,吡啶和甲醇摩尔比为1∶2.5,反应温度为380℃,反应压力为5 MPa,反应停留时间为40 min,3-甲基吡啶的收率达到79%以上。Any one of the three solid acids,phosphotungstic acid,phosphosilicic acid and phosphomolybdic acid,was loaded onto MCM-41 molecular sieves to formulate a loaded heteropolyacid catalyst.3-Methylpyridine was synthesised us-ing 35%phosphotungstic acid/MCM-41 catalyst or 35%phosphotungstic acid/MCM-41 catalyst or 35%phosphomolybdic acid/MCM-41 catalyst using pyridine and methanol as feedstock in a fluidised bed reactor.The catalyst dosage was 6 g,the molar ratio of pyridine to methanol was 1∶2.5,the reaction temperature was 380℃,the reaction pressure was 5 MPa,and the reaction residence time was 40 min,and the yield of 3-methylpyridine reached more than 79%.

关 键 词：杂多酸催化剂 流化床反应器 吡啶 3-甲基吡啶 

分 类 号：TQ253[化学工程—有机化工]