首页 | 本学科首页   官方微博 | 高级检索  
     检索      

有机弱碱体系中氢型硅铝MCM-41介孔分子筛的合成及表征
引用本文:林文勇,庞文琴,魏长平,李冬妹,甄开吉.有机弱碱体系中氢型硅铝MCM-41介孔分子筛的合成及表征[J].高等学校化学学报,1999,20(10):1495-1498.
作者姓名:林文勇  庞文琴  魏长平  李冬妹  甄开吉
作者单位:1. 吉林大学无机合成与材料制备化学开放实验室,长春,130023
2. 吉林大学化学系,长春,130023
3. 吉林大学超硬材料国家重点实验室,长春,130023
基金项目:国家自然科学基金,教育部博士点基金,吉林大学无机合成与制备化学开放实验室资助课题
摘    要:以有机胺为碱源合成出硅铝介孔分子筛MCM-41, 并将合成产物的性能与采用传统方法(以氢氧化钠为碱源)合成的产物进行了对比. 所合成产物经焙烧脱除有机表面活性剂后即为氢型. XRD和TEM 结果表明, 所合成的产物骨架具有很高的有序度. 固体核磁共振结果显示, 铝原子以四配位的形式存在于样品的原粉中. 经过高温焙烧, 有少量骨架铝脱出骨架, 转变成六配位形式. 程序升温吡啶吸附红外光谱证明焙烧后产物具有一定的表面酸性

关 键 词:氢型MCM-41  合成  有机弱碱  表面酸性
修稿时间:1998年9月30日

Synthesis and Characterization of H-form Aluminosilicate MCM-41 in a Novel Alkali-metal Free Media
LIN Wen-Yong,PANG Wen-Qin,WEI Chang-Ping,LI Dong-Mei,ZHEN Kai-ji.Synthesis and Characterization of H-form Aluminosilicate MCM-41 in a Novel Alkali-metal Free Media[J].Chemical Research In Chinese Universities,1999,20(10):1495-1498.
Authors:LIN Wen-Yong  PANG Wen-Qin  WEI Chang-Ping  LI Dong-Mei  ZHEN Kai-ji
Abstract:Incorporation of aluminum into MCM\|41 framework was achieved in an alkali\|free system, by using diethylamine as the base source. The properties of the product are compared with those of the samples obtained with NaOH. XRD and TEM results show that the resulted material is highly ordered. \{\}\+\{27\}Al MAS NMR experiment indicates that aluminum atoms are present with a 4\|coordinated form in the as\|synthesized samples. Upon calcination, a small amount of Al was removed from the framework, as indicated by a small peak characteristic of 6\|coordinated Al in the NMR profile. The surface acidity of the calcined samples were studied with Py\|IR technique.
Keywords:H\|form MCM\|41  Synthesis  Organic weak base    Surface acidity
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号