【作者】 许俊强； 储伟； 郭芳； 全学军； 李军；

【Author】 Xu Junqiang~1,Chu wei~2,Guo Fang~2,Quan Xuejun~1,Li Jun~1 (1.School of Chemical and Biological Engineering,Chongqing institute of technology,Chongqing 400050,China; 2.College of Chemical Engineering,Sichuan University,Chengdu,Sichuan 610065,China)

【机构】 重庆工学院化学与生物工程学院； 四川大学化学工程学院；

【摘要】 以廉价的工业级高模数比硅酸钠（Na₂O·3.3SiO₂）为硅源,以离子型和非离子型表面活性剂为模板剂、采用水热合成法制备了掺V的介孔分子筛.结果表明不同类型的模板剂合成的介孔分子筛的孔径差异显著,这主要由于在合成过程中表面活性剂与硅源的作用方式不同所导致.其中,非离子型表面活性剂（P123）对所合成分子筛的孔径调变作用较好,可调变硅基介孔分子筛的孔径变化范围为4.21～7.47nm.对于阳离子表面活性剂来说,分子筛合成所用模板剂的碳链长度与分子筛孔径大小有近乎线性的关系对于CTAB制备的介孔V-MCM-41分子筛,XRD分析表明介孔分子筛呈六方结构,FT-IR和UV-Vis分析技术表明V掺杂进入分子筛骨架结构.更多还原

【Abstract】 The cheaper industrial inorganic silicate Na₂O·3.3SiO₂ was selected as silica source,using different surfactant as template, and the supported vanadium mesoporous materials was prepared by direct hydrothermal synthesis.The results indicated the different surfactant in the mesoporous materials synthesis could result in the different pore size of the materials,which was due to the different reciprocity between the surfactants and silica source.The pore size of the materials was changed from 4.21 nm to 7.47 nm according to the amounts shift using P123 surfactant as template.For the cation- surfactants,the pore size of the materials was linear with length of long-chain alkyl of surfactants.The longer alkyl of surfactants,the larger pore size of the materials was.For the V-MCM-41 using CTAB as template,XRD results showed that the samples had a highly ordered hexagonal structure.FT-IR and UV-vis spectra provided strong evidences that most vanadium ions were incorporated into the framework of mesoporous siliceous MCM-41.更多还原