Page 141 - 《精细化工》2020年第11期
P. 141
第 37 卷第 11 期 精 细 化 工 Vol.37, No.11
2020 年 11 月 FINE CHEMICALS Nov. 2020
催化与分离提纯技术
涤纶催化织物的制备及其在醚合成反应中的应用
彭 卉 2,3 ,赵强强 1,2,3* ,杨 雷 2,3 ,沈一峰 2,3
〔1. 东华大学 化学化工与生物工程学院,上海 201620;2. 浙江理工大学 纺织科学与工程学院(国际丝绸
学院),浙江 杭州 310018;3. 浙江理工大学 生态染整技术教育部工程研究中心,浙江 杭州 310018〕
摘要:以五元丙烯酸酯共聚物为改性剂,涤纶织物为载体,通过浸轧整理制备了负载型涤纶相转移催化织物,
分析了催化织物在 Williamson 醚合成反应中的催化性能与反应机理,考察了整理工艺、改性剂结构、改性剂负
载量对催化活性的影响。结果表明,磷酸与甘油可提升改性剂分子的交联程度,从而提高催化织物的稳定性;
改性剂中长链烷基酯为甲基丙烯酸十八烷基酯、阳离子单体为甲基丙烯酰胺丙基二甲基丁基溴化铵、阳离子单
体摩尔分数为 13.20%、负载量为 20%时,织物催化活性最佳;催化织物可吸附油相于其表面,随后引发离子交
换、成键反应;其应用于不同苯酚衍生物的 Williamson 醚合成反应,转化率均在 92%以上,催化织物使用 11
次后仍具有较高的催化活性。
关键词:催化剂固定化;Williamson 醚合成反应;相转移催化;丙烯酸酯共聚物;催化织物
中图分类号:TS195.6 文献标识码:A 文章编号:1003-5214 (2020) 11-2287-07
Preparation of supported polyester fabrics and their
application in ether synthesis reaction
2,3
2,3
2,3
PENG Hui , ZHAO Qiangqiang 1,2,3* , YANG Lei , SHEN Yifeng
[1. College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China; 2.
College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou
310018, Zhejiang, China; 3. Engineering Research Center for Eco-Dyeing&Finishing of Textiles, Ministry of Education,
Zhejiang Sci-Tech University, Hangzhou 310018, Zhejiang, China]
Abstract: Supported phase transfer catalytic polyester fabrics were prepared by dip-rolling with five
component acrylate copolymers as modifiers and polyester fabric as carrier. The catalytic performance and
reaction mechanism of catalytic fabrics for Williamson ether synthesis reaction were analyzed. The effects
of finishing technology, structure and loading amount of modifier on the catalytic activity were investigated.
The results showed that phosphoric acid and glycerin could improve the crosslinking degree of copolymer
molecules, thus improving the catalytic stability of catalytic fabric. The modified fabric had excellent
catalytic activity when length of hydrophobic chain ester was octadecyl methacrylate, cationic monomer
was methylacrylamide propyldimethylbutylammonium bromide, molar fraction of cationic monomer was
13.20% and loading amount was 20%. The oil phase was adsorbed on the surface of the catalytic fabric, and
the ion-exchange and bonding reactions were initiated. The catalytic fabric was used in Williamson ether
synthesis reaction of different phenol derivatives, and all conversions could be over 92%. The catalytic
fabric still exhibited high catalytic activity after 11 times of use.
Key words: catalyst immobilization; Williamson ether synthesis reaction; phase transfer catalysis; acrylate
copolymer; catalytic fabric
[1]
Williamson 醚合成反应是通过酚钠或醇钠与卤 代烃制备醚类化合物的双分子亲核取代反应 ,广
收稿日期:2020-04-16; 定用日期:2020-07-17; DOI: 10.13550/j.jxhg.20200326
基金项目:国家自然科学基金青年基金(21606206);中央高校基本科研业务费专项资金(2232020G-04)
作者简介:彭 卉(1995—),女,硕士生,E-mail:641575060@qq.com。联系人:赵强强(1987—),男,讲师,E-mail:qqzhao@
dhu.edu.cn。