水热分散法制备PW_(12)/SBA-15催化剂及其催化性能的研究  

Preparation and catalytic performance study of PW_(12)/SBA-15 by water heat dispersion

作　　者：王少鹏 王会娜 王利平 李靖靖 王宇飞 WANG Shao-peng;WANG Hui-na;WANG Li-ping;LI Jing-jing;WANG Yu-fei(College of Chemical Engineering and Food,Zhengzhou Institute of Technolgy,Zhengzhou 450044,China;The 36th Middle School of Zhengzhou,Zhengzhou 450042,China)

机构地区：[1]郑州工程技术学院化工食品学院,河南郑州450044 [2]郑州市第36中学,河南郑州450042

出　　处：《应用化工》2018年第9期1917-1921,共5页Applied Chemical Industry

基　　金：河南省科技厅开放合作基金(172106000067);郑州工程技术学院科技创新基金(CXTD2017K2);郑州工程技术学院实验室开放项目

摘　　要：利用水热分散法在分子筛SBA-15上负载Keggin型结构的磷钨酸,得到负载型催化剂,采用XRD、FTIR、N2吸附-脱附等技术对其进行分析。将其用于柠檬酸三丁酯的催化合成,考察其催化性能。结果表明,磷钨酸负载量为20. 3%,催化剂用量为1. 7%,醇酸摩尔比为4∶1,反应温度为150℃,反应时间为5 h,酯化率达到95. 46%。催化剂重复使用8次,催化效果稳定。Supported catalyst was prepared by Keggin type phosphotungstic acid supported on SBA-15 using water heat dispersion,and by means of XRD,FTIR,N 2 adsorption-desorption methods to characterize.It was used for catalytic synthesis of tributyl citrate and catalytic performance was investigated.The results show that loading of phosphotungstic acid was 20.3%,the amount of catalyst was 1.7%.Mole ratio of alcohol and acid was 4∶1,reaction temperature was 150℃,reaction time was 5 h,esterification rate could reach 95.46%,the catalyst reused 8 times,stable performance.

关 键 词：磷钨酸 SBA-15 负载型催化剂 柠檬酸三丁酯 

分 类 号：TQ414.99[化学工程] O643.361[理学—物理化学]