Abstract
A study has been carried out on the physico-chemical properties of Itaya-zeolite, one of the most important natural zeolites of this country. The properties studied were chemical composition, shape, structure, specific surface area, pore volume distribution, gas adsorption, etc.
The following facts were brought to light about Itaya-zeolite.
(1) It is composed mostly of clinoptilolite, containing some mordenite.
(2) Its structure changes when heated at temperatures above 700°C.
(3) The amount of H2O, NH3, H2S or SO2 adsorbed on the natural zeolite is about 60 weight % of that by synthetic zeolite (3A∼5A).
Being far less expensive than synthetic zeolite, Itaya-zeolite will be used as the adsorbent for various kinds of gas as well as for water vapour.
