Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Synthesis of Hexagonally Ordered Super-Microporous Silicas, Using Conventional Alkyltrimethylammonium Bromide, as Adsorbents for Water Adsorption Heat-Pump Systems
Kazuhisa YanoYoshiaki Fukushima
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2003 Volume 76 Issue 11 Pages 2103-2109

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Abstract

Super-microporous silicas with an ordered hexagonal structure were synthesized under dilute conditions using a conventional alkyltrimethylammonium halide as a template. The d100 of the super-microporous silicas was approximately 23 Å. The pore diameter of one of the obtained samples, determined by an argon adsorption measurement, was 16.7 Å. This material adsorbed water vapor with a P/P0 value higher than 0.29, while desorbing it with a P/P0 value lower than 0.14. It can be inferred that this super-microporous silica is suitable as an adsorbent for an adsorption heat-pump system.

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© 2003 The Chemical Society of Japan
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