高校化学工程学报Issue(5)：979-984,6.DOI:10.3969/j.issn.1003-9015.2014.05.007
介孔SBA-15负载磷钨酸催化四氢呋喃聚合的研究
Study on THF Polymerization Catalyzed by Phosphotungstic Heteropolyacid on Mesoporous Silica SBA-15 Support
摘要
Abstract
A catalyst synthesized by loading phosphotungstic heteropolyacid on mesoporous silica material SBA-15 support was used in ring-opening polymerization of tetrahydrofuran (THF). The polymerization of THF was monitored in real-time by ReactIR. The effects of mass fraction of HPW, the mass ratio of 3-aminopropyl-triethoxysilane (APTES) to SBA-15, and the pore diameter of SBA-15 on catalytic performance and the conversion of THF were investigated. It was found that the supported catalyst HPW/SBA-15 prepared by impregnation with 40% mass fraction of HPW exhibits the highest activity. The amino-functionalized SBA-15 can effectively improve the catalytic performance of catalyst HPW/NH2-SBA-15 for repeated use in THF polymerization. And the catalyst HPW/NH2-SBA-15 has the highest activity when the mass ratio of mAPTES/mSBA-15=0.0712. It shows good catalytic performance. Its PTHF product has higher molecular weight when SBA-15 has larger specific surface area or larger pore sizes (specific surface area=498~585 m2⋅g-1). Also, the catalytic performance of catalysts and the molecular weight of PTHF product increase with the pore size of SBA-15.关键词
SBA-15介孔分子筛/磷钨酸/负载型催化剂/四氢呋喃开环聚合/催化性能Key words
mesoporous silica SBA-15/phosphotungstic heteropolyacid/supported catalyst/ring-opening polymerization of THF/catalytic performance分类
化学化工引用本文复制引用
邓杭军,邓佳,陈纪忠..介孔SBA-15负载磷钨酸催化四氢呋喃聚合的研究[J].高校化学工程学报,2014,(5):979-984,6.基金项目
化学工程联合国家重点实验室自主课题重点资助项目(SKL/ChE-09Z02)。 （SKL/ChE-09Z02）
