Abstract
Adsorption / desorption behavior of water vapor in a desiccant honeycomb containing a silica-alumino-phosphate type zeolite AQSOA-Z02, which exhibited a S-shaped adsorption isotherm, was experimentally investigated for humidity swing. The pieces of ceramic paper impregnated with AQSOA-Z02 as a desiccant material and Silica gel as a binding material were prepared and tested to understand the influence of the composite material similar to a desiccant honeycomb. At first, their adsorption isotherms of water vapor were unable to be explained by the additivity of each material adsorption isotherm. The most significant finding was that the relationship between the adsorption / desorption rates in humidity swing and the driving force of adsorption changed at the specified amount of adsorption. This specific amount of adsorption probably corresponded to the amount at which the change of adsorption mechanism occurred.
