| L型沸石的合成及其性能的研究 |
| STUDIES ON THE SYNTHESIS AND PROPERTIES OF L-TYPE ZEOLITE |
|
| 摘要: 本文利用水热法合成L型沸石导向剂,应用XRD,电子衍射等方法得出其导向活性的形成由诱导期,活性生长期及活性稳定期三个阶段组成,并证明导向活性组分是L型沸石的晶核前驱,且表面富硅,其晶胞常数a=1.83nm,c=0.75nm;由晶核前驱至晶核形成和晶体成长过程的表观活化能分别为～29kJ/mol和～78kJ/mol.我们还利用该导向剂合成出不同颗粒度的L型沸石,并分别测定他们的水、苯和正已烷的吸附等温线以及某些催化性能. |
| 关键词: L型沸石 硅酸铝晶体 |
| 基金项目: |
| Abstract: The directional activity for crystallization direction agent of L-type zeolite have been investigated by means of XRD,electron diffraction and other method .We found that the formation of directional activity is composed by three steps: induction,activity-growth and stability period.The composition of directional activity of L-type zeolite is the nucleus precursor which show enrich silica on the surface.The cell parameters a and c are equal to 1.83nm and 0.75nm respectively .The apparent activition energy for nuclcation of zeolite and for crystal growth of L-type zeolite are equal to 29 kJ·mol-1 and ～78 kJ·mol-1 respectivcly.The L-type zeolites with different particle size were synthesized by crystallization directional agent of L-typc zeolite.The adsorption isothermals of H2O,benzene and n-hexane were determined respectively and the catalytic properties of L-type zeolite for chlorination for aromatic hydrocarbons and aromatization of C6～C8 alkanes over Pt/L were studied. |
| Keywords: L type zeolite aluminosilicate crystal |
| 投稿时间：1992-09-18 |
| 摘要点击次数: 1260 |
| 全文下载次数: 1254 |
| 董家騄,须沁华,崔海龙.L型沸石的合成及其性能的研究[J].无机化学学报,1993,9(4):394-400. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
