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化学学报
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化学学报 ›› 1989, Vol. 47 ›› Issue (10): 947-951. 上一篇    下一篇

研究论文

用IR/TPD法测定氢型丝光沸石上氨的脱附活化能

李全芝;薛志元;朱雷明;张瑞明   

  1. 复旦大学化学系
  • 发布日期:1989-10-15

The measurement of activation-energies of desorption of ammonia adsorbed on H-mordenite by an advanced IR-TPD technique

LI QUANZHI;XUE ZHIYUAN;ZHU LEIMING;ZHANG RUIMING   

  • Published:1989-10-15

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674

被引次数

3

通过IR/TPD的改进方法, 测定了氨在氢型丝光沸石(HM)上的Bronsted酸位上的脱附活化能和相应的集居数。结果表明, 在HM上有三种不同强度的Bronsted酸位, 分别对应脱附活化能为63.6、49.8和35.4kJ/mol。

关键词: 红外分光光度法, 催化剂, 量子化学, 氨, 酸度, 解吸, 程序升温脱附, 活化能, 丝光沸石

The activation-energies of desorption and population of Broensted sites for ammonia adsorbed on H-mordenite have been measured by an advanced IR-TPD technique. There are three different Broensted sites corresponding to three different activation-energies of desorption, 63.6, 49.8, 35.4 kJ/mol and three different population, 0.35, 0.19, 0.10.

Key words: INFRARED SPECTROPHOTOMETRY, CATALYST, QUANTUM CHEMISTRY, AMMONIA, ACIDITY, DESORPTION, TEMPERATURE PROGRAMMING DESORPTION, ACTIVATION ENERGY, MORDENITE

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