ADSORPTION OF A NITROGEN OXYGEN MIXTURE IN NACAA ZEOLITES BY ELUTION CHROMATOGRAPHY

被引：32

作者：

CHOUDARY, VN ^{[1
]}

JASRA, RV ^{[1
]}

BHAT, TSG ^{[1
]}

机构：

[1] INDIAN PETROCHEM CORP LTD,RES CTR,BARODA 391346,GUJARAT,INDIA

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1993年 / 32卷 / 03期

关键词：

D O I：

10.1021/ie00015a018

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Adsorption of nitrogen and oxygen is studied on various NaCaA zeolite samples using elution gas chromatography. The influence of calcium content on the adsorption of nitrogen is very pronounced, but oxygen adsorption is affected only to a negligible extent. The Henry constant and adsorption selectivity of nitrogen show unexpectedly high values for zeolite samples with higher calcium content (greater-than-or-equal-to 90% calcium exchange). This observation has been explained in terms of interaction of nitrogen molecules with Ca2+ ions located in site B. The presorption of water and carbon dioxide molecules on zeolite adversely affects the Henry constant, heat of adsorption, and selectivity of nitrogen whereas adsorption of oxygen is unaffected.

引用

页码：548 / 552

页数：5

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