二氧化硅负载杂多酸催化剂催化合成二氯丙醇  

Catalytic Synthesis of Dichloropropanol with Silica Supported Heteropoly Acid Catalyst

作　　者：张玉青 王玉 张明轩 ZHANG Yu-qing;WANG Yu;ZHANG Ming-xuan(Shihlien Chemical Industrial Jiangsu Co.,Ltd.,Jiangsu Huai an 223112;Faculty of Chemical Engineering,Huaiyin Institute of Technology,Jiangsu Huai an 223001,China)

机构地区：[1]实联化工(江苏)有限公司,江苏淮安223112 [2]淮阴工学院化学工程学院,江苏淮安223001

出　　处：《广州化工》2020年第1期50-51,92,共3页GuangZhou Chemical Industry

基　　金：淮阴工学院研究生科技创新计划项目(HGYK201802)

摘　　要：采用溶胶凝胶法制备了二氧化硅负载磷钨杂多酸催化剂,通过磷钨杂多酸催化剂催化合成二氯丙醇,考察了影响反应的条件,结果表明:磷钨酸负载量为30%,催化剂用量为1 g,反应温度为120℃,反应时间为8 h。二氯丙醇收率92.1%,催化剂循环使用5次,磷钨杂多酸仍负载在二氧化硅上,保持原有杂多酸的结构,催化剂的活性较高,二氯丙醇收率在90%以上。Phosphotungstic acid catalyst supported on silica was prepared by sol-gel method,and applied for the synthesis of di-chloropropylalcohol from glycerol.The reaction conditions were investigated.The results showed that under the optimum conditions of the loading capacity of phosphotungstic acid of 30%,the amount of catalyst of 1 g,the reaction temperature of 120℃,and the reaction time of 8 h,the yield of dichloropropanol can reach 92.1%.After recycling five times,phosphotungstic heteropoly acid was still loaded on silica with the original structure and high catalytic activity,and the yield of dichloropropanol was over 90%.

关 键 词：二氧化硅 杂多酸 合成 二氯丙醇 

分 类 号：TQ426.91[化学工程]