Study of Water Vapour Adsorption on Sandwich-Type CuO/NaX Adsorbent–Catalysts

Abstract

Experimental data show that the adsorbent–catalyst CuO/NaX is hydrophilic with a similar water vapour adsorption capacity and adsorption rate to zeolite NaX. Equilibrium parameters were best described by a Freundlich-like equation. BET studies and Kelvin equation calculations confirmed that, at an ambient relative humidity of 37% or higher, water vapour condensation will occur in the prevailing 2.0–2.3 nm pores of the adsorbent–catalyst CuO/NaX. The kinetic parameters for the adsorption of water vapour are presented.