高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (12): 1840.

• 研究简报 • 上一篇    下一篇

高硅分子筛MCM-41热稳定性与水热稳定性的初步研究

董维阳, 龙英才, 郜晓琴, 许太明, 谢关根, 高滋   

  1. 复旦大学化学系, 上海, 200433
  • 收稿日期:1995-10-19 出版日期:1996-12-24 发布日期:1996-12-24
  • 通讯作者: 龙英才
  • 作者简介:董维阳,男,31岁,博士研究生.
  • 基金资助:

    国家自然科学基金

Studies on Thermal and Hydrothermal Stability for High-siliceous Molecular Sieve MCM-41

DONG Wei-Yang, LONG Ying-Cai, GAO Xiao-Qin, XU Tai-Ming, XIE Guan-Gen, GAO Zi   

  1. Department of Chemistry, Fudan University, Shanghai, 200433
  • Received:1995-10-19 Online:1996-12-24 Published:1996-12-24

关键词: 高硅分子筛MCM-41, 热稳定性, 水热稳定性, 环己烷吸附等温线

Abstract: High-siliceous MCM-41 was calcined at 800℃in dry air and at 600℃ in watersaturated air for different time respectively.Their XRDpatterns and adsorption isotherms of cyclohexane were determined.The results show that the structure of MCM-41 is more stable after calcining at high temperature in dry air. The structures of the samples were damaged by the hydrothermal treatment precalcined at high temperature in dry air for different time with different degrees.The parent MCM-41 was damaged more,but the precalcined samples less.The influence of thermal and hydrothermal treatment on the pore size is not too remarkable.

Key words: High-Siliceous molecular sieve MCM-41, Thermal stability, Hydrothermal stability, Adsorption isotherm of cyclohexane

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