物理化学学报 >> 1999, Vol. 15 >> Issue (11): 1041-1044.doi: 10.3866/PKU.WHXB19991116

研究简报 上一篇    下一篇

高硅Y沸石的研制及吸附热力学性质

孙德坤, 鲍书林, 徐亲, 须沁华   

  1. 南京大学,化学化工学院,南京 210093
  • 收稿日期:1998-12-15 修回日期:1999-04-29 发布日期:1999-11-15
  • 通讯作者: 孙德坤

Synthesis and Adsorption Thermodynamic Properties of High-Silica Y Zeolite

Sun De-Kun, Bao Shu-Lin, Xu Qin, Xu Qin-Hua   

  1. College of Chemistry and chemical Engineering,Nanjing University,Nanjing 210093
  • Received:1998-12-15 Revised:1999-04-29 Published:1999-11-15
  • Contact: Sun De-Kun

关键词: 脱铝, Y沸石, 吸附, 热力学

Abstract:

A serious of zeolites Y of high Si/Al and high crystalline have been prepared by treatment with silicon tetrachloride vapour. Adsorption isotherms for n-Hexane have been measured by vacume gravimetric on a series of samples at various temperatures. The relationship between uptake of sorbate on a series of samples and dealumination extent and temperature have been obtained. Differential heats of adsorption, differential entropies and heat capacities of adsorbed substance have been calculated from the isotherms. The nature of surface and intracrystalline porosity of dealuminated zeolite Y have been further considered from the results of our experiments.

Key words: Dealumination, Y zeolite, Adsorption, Thermodynamic