高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (5): 571.

• 论文 • 上一篇    下一篇

富硅超稳八面沸石研究——制备、表征、稳定性、羟基酸性及催化活性

王秋莹, 盛芬玲, 菅盘铭, 朱超, 许言和, 阎子峰, 车飚   

  1. 兰州大学化学系, 分析测试中心, 兰州, 730000
  • 收稿日期:1991-07-10 出版日期:1992-05-24 发布日期:1992-05-24
  • 通讯作者: 菅盘铭

Studies of Ultrastable Faujasites Enriched in Silicon--Preparation, Characterization, Stability, Hydroxyl Acidity andcatalytic Activity

WANG Qiu-ying, SHENG Fen-ling, Jian Pan-ming, ZHU Chao, XU Yan-he, YAN Zi-feng, CHE Biao   

  1. Dept.of Chem., Instrument and Analysis Centre, Lanzhou University, Lanzhou, 730000
  • Received:1991-07-10 Online:1992-05-24 Published:1992-05-24

摘要: 用(NH4)2SiF6二次合成法制备了Si/Al=4.2~7.1、结晶度大于94%的系列八面沸石(FSY样品),再于500℃水热处理得到相应的US-SY样品。XRD、DTA及IR研究发现US-SY样品较FSY样品有更高的热稳定性、骨架稳定性和酸强度,其裂解、歧化活性也优于FSY样品。

关键词: 富硅Y沸石, 超稳八面沸石, 热稳定性, 羟基酸性, 催化活性

Abstract: Faujasiste zeolites(FSY) with different Si/Al ratios(4.2~7.1) are prepared by secondary synthesis with (NH4)2SiF6.The corresponding US-SYC 4.2~7.1) samples are also prepared by the stabilization treatment of FSY samples at 500℃ hydrothermal condition.The XRD, DTA and IR studies show that the thermal stability and framework stability and acid strength of US-SYsamples are higher than that of FSYsamples.The catlalytic activity of USSY samples for the cumene cracking, toluene disproportionation and dealkylation actirity are superior to that of FSY samples.

Key words: Faujasite enriched in silicon, Ultrastable faujasite zeolites, Thermal stability, Hy-droxyl acidity, Catalytic activity

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