微量吸附量热技术在NH_2-SBA-15合成中的应用  

Application of Microcalorimetric Technique to the Synthesis of NH_2-SBA-15

作　　者：杨胥微[1] 张晓丰[1] 阚秋斌[1] 付威[1] 黄家辉[1] 吴通好[1] 

机构地区：[1]吉林大学化学学院物理化学系,长春130012

出　　处：《高等学校化学学报》2007年第6期1147-1150,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20673046)资助

摘　　要：采用共价接枝法,以氨丙基-三乙氧基硅烷为氨源,制备了一系列的NH2-SBA-15催化剂,通过微量吸附量热技术定量地分析了该催化剂表面碱性中心的强度、数量和分布状态.实验结果表明,SBA-15在550℃焙烧6h,氨基硅源与SBA-15质量比为1·5,是合成NH2-SBA-15催化剂最适宜的条件.运用微量吸附量热技术实现了对NH2-SBA-15催化剂合成条件的优化.A series of NH2-SBA-15 were prepared via a aminopropyl-triethoxysilane to react with SBA-15 and characterized with N2-BET, XRD, elementary analysis and FTIR and flavanone was synthesize via condensa-tion between 2＇-hydroxyphenyl methyl ketone and benzaldehyde catalyzed by the catalyst NH2-SBA-15. The microcalorimetric technique was used to study quantitatively the surface base sites of NH2-SBA-15 with intensi-ty, number and distribution. It was shown that the reaction condition （550,6,1.5） was the most compatible for synthesis of NH2-SBA-15.

关 键 词：微量吸附量热 NH2-SBA-15 二氧化碳 碱性中心 

分 类 号：O643.1[理学—物理化学]