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2012 , Vol. 70 >Issue 03: 311 - 317

DOI: https://doi.org/10.6023/A1104286

研究论文

二氧化硅负载全氟丁基磺酰亚胺的制备与耐水性研究

  • 马忠华 ,
  • 杨秋红 ,
  • 马敬中
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  • a 华中农业大学理学院化学系 武汉 430070;
    b 华中科技大学化学与化工学院 武汉 430074

收稿日期: 2011-04-28

  修回日期: 2011-08-24

  网络出版日期: 2011-11-02

基金资助

国家自然科学基金(No. 21172083)、中央高校基本科研业务费专项资金(Nos. 2010BQ023, 2011JC004, 2009JC007)资助项目.

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Preparation and Water Tolerance Study of SiO2-supported Perfluorobutylsulfonylimide

  • MA Zhong-Hua ,
  • YANG Qiu-Hong ,
  • MA Jing-Zhong
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  • a Department of Chemistry, College of Basic Sciences, Huazhong Agricultural University, Wuhan 430070;
    b School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074

Received date: 2011-04-28

  Revised date: 2011-08-24

  Online published: 2011-11-02

Supported by

Project supported by the National Natural Science Foundation of China (No. 21172083) and the Fundamental Research Funds for the Central Universities (Nos. 2010BQ023, 2011JC004, 2009JC007).

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摘要

酸官能团C4F9SO2NHSO2-通过两步溶胶-凝胶法, 链接到SiO2 载体上, 制备得到一种新型的有机-无机杂化固体酸(PSFSI-MSMA15/SiO2). 反应以对苯乙烯磺酰基全氟丁基磺酰亚胺钠(1)为原料, 与3-甲基丙烯酰氧基丙基三甲氧基硅烷(MSMA)共聚形成预聚体(2), 2 与原硅酸四乙酯水解缩合, 获得PSFSI-MSMA15/SiO2, 负载的酸官能团通过FT-IR,TG/DTG 及XPS 表征, 酸负载量约0.62 mmol/g, 热稳定性可达到210 ℃. 实验结果表明, 酸组分在水体系中稳定, 是一种耐水性强酸. 催化性能及可循环性在进一步研究中.

关键词： 全氟丁基磺酰亚胺; 杂化Br∅; nsted 酸; 耐水性; 溶胶-凝胶法

本文引用格式

马忠华 , 杨秋红 , 马敬中 . 二氧化硅负载全氟丁基磺酰亚胺的制备与耐水性研究[J]. 化学学报, 2012 , 70(03) : 311 -317 . DOI: 10.6023/A1104286

Abstract

A new style of acidic perfluorobutylsulfonylimide-functionalized organosilica (PSFSI-MSMA15/ SiO2) was synthesized by incorporating a sulfonimide prepolymer (2) into the SiO2 network. The prepolymer was synthesized by free-radical copolymerization of sodium 4-styrenesulfonyl(perfluorobutylsulfonyl)imide (1) with 3-(trimethoxysilyl)propyl methacrylate (MSMA), and then hydrolyzed and co-condensed with tetraethyl orthosilicate by two-step sol-gel method to afford the acidic hybrid material having acid contents of 0.62 mmol/g. The chemical composition were analyzed by FT-IR, XPS and TG/DTG, and hydrothermal stability was investigated. The results indicated that PSFSI-MSMA15/SiO2 was high-temperature (210 ℃) and water tolerant. The study of catalytic property and recoverability are in progress.

Key words： perfluorobutylsulfonylimide; hybrid Br?nsted acid; water tolerance; sol-gel method

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