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.
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.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2012年第3期311-317,共7页
Acta Chimica Sinica
基金
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~~
