高等学校化学学报

高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (4): 502.

• 论文 • 上一篇    下一篇

皂石的合成、表征及其催化性能

刘子阳1, 蒋大振1, 张爱君1, 范曙光1, 闵恩泽2, 何鸣元2, 赵学斌2   

  1. 1. 吉林大学化学系, 130023;
    2. 北京石油化工科学研究院
  • 收稿日期:1989-08-03 出版日期:1991-04-24 发布日期:1991-04-24
  • 通讯作者: 蒋大振
  • 基金资助:

    国家自然科学基金;石油化学工业公司资助课题

Synthesis, Characterization and Catalytic Activity of Saponites and Their Pillared Analogues

Liu Zi-yang1, Jiang Da-zhen1, Zhang Ai-jun1, Fan Shu-guang1, Min En-ze2, He Ming-yuan2, Zhao Xue-bin2   

  1. 1. Department of Chemistry, Jilin University, Changchun, 130023;
    2. Resaerch Institute of Petroleum Processing, Beijing
  • Received:1989-08-03 Online:1991-04-24 Published:1991-04-24

PDF (PC)

被引次数

16

摘要： 用水热法合成了皂石,并用羟基铝低聚物与其交联制得AICLS。用XRD、27Al和29SiMASNMR及吡啶吸附量表征其晶相、结构和表面酸性。合成产物的结晶度很高。皂石中T-O-T片内四面体层上铝量可由合成条件控制,表明交联密度的柱间距与铝量有关。在异丙苯裂解反应中,AICLS的活性高于皂石,但活性衰减较慢;样品的催化裂化活性与探针分子可抵达的强酸中心数有关。

关键词: 合成皂石, 交联, 枯烯裂解

Abstract: Saponite clays (S) were synthesized by hydrothermal mathod. The pillared saponite clays (Al-CLS) were prepared by intercalating the saponite with aluminum hydsoxy polymer [A113O4(OH)24·(H2O)12]7+. Saponite clays and their pillared clays were characterized with XRD, 27A1 and 29SiMASNMR and the amount of adsorped pyridine. The catalytic activity of saponites and their pillared anologues were evaluated for cumene cracking. The results show that the synthetic products were of good crystallinity and the aluminum amount in the tetrahedral layer of T-O-Tsheet of saponite could be controlled by synthetic condition. The crosslinking density is correlative with aluminum amount in the tetrahedral layer. Compared with saponite, the activity for cumene cracking on the Al-CLS is higher but activity decay is lower. The catalytic activity of the sample is correlated with the number of strong acid sites on the surface where the probe molecule can arrive.

Key words: Saponite pillared clay, Crosslinking, Cumene cracking

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