Abstract
The water adsorption properties of modified porous sorbents for solar thermal energy storage and heat transformation
have been investigated by thermogravimetry (TG) differential thermogravimetry (DTG), microcalorimetry,
measurements of water adsorption isotherms, and storage tests. A chabazite type SAPO, a dealuminated faujasite type
zeolite, and a mesostructured aluminosilicate, have been synthesized and compared with common zeolites X, Y and silica
gel. It has been found that optimized lattice composition and pore architecture contribute to well adapt hydrophilic
properties and a beneficial steep isotherm.