纳米TS-1分子筛和过氧化氢绿色合成羟基苯甲醚  

The Green Synthesis of Hydroxyanisole with Nano TS-1 Zeolites and Hydrogen Peroxide Solution

作　　者：严华鹏 黄鹏鸣 杨蓥 周琪 邵斯琪 李焕一 徐绍祥 朱美华[1] 陈祥树[1] YAN Huapeng;HUANG Pengming;YANG Ying;ZHOU Qi;SHAO Siqi;LI Huanyi;XU Shaoxiang;ZHU Meihua;CHEN Xiangshu(School of Chemical Engineering,State-Province Joint Engineering Laboratory of Zeolite Membrane Materials,Jiangxi Normal University,Nanchang Jiangxi 330022,China)

机构地区：[1]江西师范大学化学工程学院,分子筛膜材料国家地方联合工程实验室,江西南昌330022

出　　处：《江西师范大学学报(自然科学版)》2024年第5期479-484,共6页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：国家自然科学基金(21868012,22368025)资助项目.

摘　　要：羟基苯甲醚是一种重要的聚合抑制剂和香料前体的化学中间体,近年来绿色高效地合成羟基苯甲醚技术受到了广泛关注.该文以TS-1分子筛和过氧化氢为原料绿色合成羟基苯甲醚,考察了溶剂类型、苯甲醚/H_(2)O_(2)物质的量之比、催化剂用量、温度和TS-1分子筛多级孔结构对羟基苯甲醚收率的影响.此外,四丙基氢氧化铵(TPAOH)后处理有利于制备具有高配位Ti活性位的多级孔TS-1分子筛,且乙腈作为非质子溶剂有利于苯甲醚与过氧化氢之间形成五元环结构,可大幅提高TS-1分子筛的催化性能.当催化剂、溶剂、n(苯甲醚)∶n(H_(2)O_(2))、催化剂用量、温度分别为多级孔TS-1分子筛、乙腈、1.0∶1.2、4.10%、80℃时,羟基苯甲醚收率可达31.15%,对羟基苯甲醚和邻羟基苯甲醚的选择性分别为69.98%和30.02%.Hydroxyanisole is an important chemical intermediate for polymerization inhibitors and flavor precursors,a green and efficient synthesis of hydroxyanisole has attracted extensive attention in recent.In this paper,hydroxyanisole are synthesized with TS-1 zeolites and hydrogen peroxide.Influences of solvent type,nanisole/H_(2)O_(2)molar ratio,catalyst dosage,temperature and hierarchical pore structure of TS-1 zeolites on hydroxyanisole yield are investigated in details.TPAOH post-treatment is favor for preparing hierarchical TS-1 zeolites with high coordination Ti active site,and acetonitrile is a non-protonic solvent and facilitate the formation of a five-membered ring structure between anisole and hydrogen peroxide,which can greatly improve the catalytic performance of TS-1 zeolites.When the catalyst,solvent,nanisole/H_(2)O_(2)molar ratio,catalyst dosage,and temperature are hierarchical TS-1 zeolites,acetonitrile,1.0∶1.2,4.10%and 80℃,the hydroxyanisole yield can reach 31.15%,and the selectivity of p-hydroxyanisole and m-hydroxyanisole are 69.98%and 30.02%.

关 键 词：TS-1分子筛 多级孔 催化氧化 羟基苯甲醚 

分 类 号：O211.67[理学—概率论与数理统计]