METHOD FOR SEPARATING GAS

PROBLEM TO BE SOLVED: To provide a novel non low temperature processing type gas separating method for gas separation. SOLUTION: A stage in which a gaseous mixture containing at least two components having different adsorptive characteristic is fed into an adsorption vessel including at least one adsorptive material capable of preferentially adsorbing at least one gaseous component in the gaseous mixture and the gaseous mixture is exposed at a condition to make possible to adsorb the gaseous component which is preferentially adsorbed on the adsorptive material and to make possible to separate the adsorptive component from a nonadsorptive component in the gaseous mixture passing through the adsorption vessel is included, and at least one adsorptive material in the adsorption vessel contains composite particles having an inside nucleus containing nonporous and nonadsorptive material and at least one outside layer. In the outer condition, the method uses a hollow particular adsorptive material.