您的位置:首页  > 论文页面

二元醇共溶剂对Si-MFI分子筛晶体形貌的影响

发表时间:2009-02-15  浏览量:1934  下载量:852
全部作者: 陈晓欣,闫文付,曹学静,于吉红,徐如人
作者单位: 吉林大学化学学院,无机合成与制备化学国家重点实验室
摘 要: 在微波辅助的溶剂热合成条件下,用二元醇作为助溶剂,研究了反应体系正硅酸乙酯-四丙基氢氧化铵(TEOS-TPAOH)-醇-H2O中合成参数对Si-MFI分子筛晶体形貌的影响。这些参数包括二元醇在体系中的浓度、二元醇的种类、微波加热时间等。研究表明:在助溶剂浓度较高、微波加热时间较长的条件下容易合成出c-方向较长的Si-MFI分子筛晶体。用X-射线粉末衍射分析和扫描电子显微镜对产物进行了进一步表征。
关 键 词: 无机化学;分子筛;Si-MFI;微波加热;形貌控制;助溶剂
Title: Effect of the dipolar alcohols on controlling the morphology of Si-MFI
Author: CHEN Xiaoxin, YAN Wenfu, CAO Xuejing, YU Jihong, XU Ruren
Organization: State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University
Abstract: Morphology control of silicalite-1 (Si-MFI) crystals was achieved by employing microwave-assisted solvent-thermal synthesis in the reaction system TEOS-TPAOH-alcohol-H2O by using diols as cosolvent. The influences of various experimental parameters, such as the concentration of diols in the reaction mixture, the type of diols and microwave heating profiles on the morphology of the resulting Si-MFI crystals were investigated. The studies show that c-direction prolonged Si-MFI crystals could be synthesized by using diols as cosolvent with high concentration and long microwave heating time. The results were further characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM).
Key words: inorganic chemistry; zeolite; Si-MFI; microwave heating; morphology control; co-solvent
发表期数: 2009年2月第3期
引用格式: 陈晓欣,闫文付,曹学静,等. 二元醇共溶剂对Si-MFI分子筛晶体形貌的影响[J]. 中国科技论文在线精品论文,2009,2(3):294-297.
 
0 评论数 0
暂无评论
友情链接