摘要
以123为模板剂,TEOS为主要硅源,3-巯丙基三甲氧基硅烷、甲基三乙氧基硅烷、正辛基三乙氧基硅烷、N-十六烷基三乙氧基硅烷为有机硅源,采用直接法制备不同疏水基(甲基、辛基、十六烷基)固体酸,改变TEOS预水解时间,考察样品对乙酸正丁酯酯化反应的影响.采用XRD、FT-IR和N_2吸附-脱附等手段对样品进行表征.结果表明:随着疏水基有机硅烷链的增长,样品疏水性的增强,酯化率增大;TEOS预水解时间为180min时,样品的酯化率有所提高,最高可达88.23%.
Containing different alkyl(methyl,octyl and cetyl)hydrophobic solid acid SBA-15-SO3H was prepared by direct,in which Pluronic P123was used as template,tetraethyl orthosilicate(TEOS)was adopted as silicon source and(3-Mercaptopropyl)trimethoxysilane、Methyltriethoxysilane、n-Octyltriethoxysilane、n-Hexadecyltriethoxysilane was utilized as coupling agent.And the contrast experiment was done,the prehydrolysis time of TEOS was changed,and the effect of sample on esterification of acetic acid was studied.All the materials were characterized by XRD,FT-IR and N2adsorption-desorption.The results show With the increase of the hydrophobic group,the increase of the hydrophobicity of the samples,the esterification rate increased;When the prehydrolysis time of180min was TEOS,the esterification rate of the prepared samples was improved,which was88.23%.
作者
邵艳秋
张宇婷
芦原萱
刘素娟
任玉兰
苏爽月
Shao Yan-qiu;Zhang Yu-ting;Lu Yuan-xuan;Liu Su-juan;Ren Yu-lan;Su Shuang-yue(College of Chemistry and Chemical Engineering, Mu Danjiang Normal University,Mudanjiang 157011,China;Heilongjiang Province Key Laboratory of New Carbon-Base Functional and Superhard Material, Mudanjiang 157011, China)
出处
《牡丹江师范学院学报（自然科学版）》
2017年第4期48-51,80,共5页
Journal of Mudanjiang Normal University：Natural Sciences Edition
基金
牡丹江市科学技术计划项目(Z2016g0001)
牡丹江师范学院科研机构专项(JG2017001)
黑龙江省教育厅科研备案项目(1352MSYYB006)
黑龙江省自然科学学基金项目(E201341)
关键词
疏水
酯化
乙酸正丁酯
预水解时间
hydrophobic
esterification
n-butyl acetate
prehydrolysis time
