Abstract
The separatiing properties of tuffs containing clinoptilolite adn mordenite as adsorbents in gas chromatography were studied, using argon—oxygen—nitrogen—methane—carbon monoxide as a model mixture. It was shown that the treatment of tuffs containing clinoptilolite with hydrochloric acid improves the separation of the oxygen—nitrogen mixture but does not separate oxygen—argon. It was found that natural tuffs containing mordenite have better separation abilities than synthetic sodium mordenite. The enrichment of natural mordenite with calcium or strontium cation improves the separation of oxygen—nitrogen, while the introduction of strontium and barium cations into the zeolite structure improves the separation of argon—oxygen. The temperature of the thermal activation of the specimens greatly influences the separating ability of tuffs containing mordenite.
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