Adsorption and coadsorption of molecular hydrogen isotopes in zeolites.: 1.: Isotherms of H2, HD, and D2 in NaA by thermomicrogravimetry

被引：57

作者：

Stéphanie-Victoire, F ^{[1
]}

Goulay, AM ^{[1
]}

de Lara, EC ^{[1
]}

机构：

[1] Univ Paris 06, CNRS URA 800, Lab Milieux Desordonnes & Heterogenes, F-75252 Paris 05, France

来源：

LANGMUIR | 1998年 / 14卷 / 25期

关键词：

D O I：

10.1021/la980521o

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The isotherms of molecular hydrogen isotopes adsorbed in Natl zeolite, measured by microgravimetry from 120 to 77 K, have been approached by the Dubinin model. The adsorbed amounts slightly increase from H-2 to D-2. This fact is related to the values of the covolumes of the species in the fluid phase. The heats of adsorption are around 10 kJ/mol and decrease with the adsorption amount. From the adsorption entropy we have estimated the external and librational frequencies.

引用

页码：7255 / 7259

页数：5

共 19 条

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