硅交联汉克脱石的合成、表征及其阳离子作用的研究

高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (9): 933.

硅交联汉克脱石的合成、表征及其阳离子作用的研究

孙铁¹, 蒋大振¹, 刘子阳¹, 李颖¹, 闵恩泽², 何鸣元²

1. 吉林大学化学系;
2. 北京石油化工科学研究院

收稿日期:1988-12-20 出版日期:1990-09-24 发布日期:1990-09-24
通讯作者: 蒋大振, 130023

Studies on Synthesis and Characterization of Silica-Intercalated Hcctorite and Its Cation Function

Sun Tie¹, Jiang Dazhen¹, Liu Ziyang¹, Li Ying¹, Min Enze², He Mingyuan²

1. Department of Chemistry, Jilin University, Changchun;
2. Beijing Research Institute of Petroleum Processing, Beijing

Received:1988-12-20 Online:1990-09-24 Published:1990-09-24

摘要/Abstract

摘要： 用汉克脱石与丙胺基三乙氧基硅烷反应,制得硅交联汉克脱石。产物经700℃焙烧,其底面间距为17.7Å。柱状汉克脱石的热稳定性高于层状汉克脱石。改变层间阳离子不影响层间距。NH₃-TPO和吡啶吸附实验表明样品存在L酸和B酸中心,且酸强度较弱。柱状样品的裂解活性高于层状样品。镁和镧可减小活性衰减速率。

关键词: 汉克脱石, 硅交联, 裂解活性

Abstract: Silica-intercalated hectorite (Si-CLH) with an 001 spacing of 17. 7Å was prepared by hydrolysis and oxidation of synthetic hectorite containing NH₂(CH₂)₃Si(OC₂H₅)₃ at 700℃. The results of high-temperatuer XRD and DTA show that the thermal stability of Si-CLH is higher than that of the parent hectorite. The spacing of pillared hectorite did not vary with changing cation in the interlayer regions. NH₃-TPD and pyridine-adsorption IRindicate the presence of both Lewis and Bronsted acidity on the surface of these samples with weaker acid strength. Cracking activity of cumene of pillared hectorite is greatly higher than that of the parent hectorite. The presence of Mg or La retard the rate of active decay.

Key words: Hectorite, Silica-cross-linking, Cracking activity

TrendMD:

孙铁, 蒋大振, 刘子阳, 李颖, 闵恩泽, 何鸣元. 硅交联汉克脱石的合成、表征及其阳离子作用的研究. 高等学校化学学报, 1990, 11(9): 933.

Sun Tie, Jiang Dazhen, Liu Ziyang, Li Ying, Min Enze, He Mingyuan. Studies on Synthesis and Characterization of Silica-Intercalated Hcctorite and Its Cation Function. Chem. J. Chinese Universities, 1990, 11(9): 933.