Adsorption Isotherms and Heat of Adsorption of Difluoromethane on Activated Carbons

Abstract

Experimental adsorption data of difluoromethane (HFC-32) on activated carbon in powder (ACP) and fiber (ACF) forms over a range of (25 to 75)°C and pressures up to 1400 kPa are reported. The data are fitted to Tóth and Dubinin–Astakhov isotherm equations. Adsorbed phase volume is derived from the data. Isosteric heats of adsorption are extracted, and their dependence on relative loading and relative pressure is analyzed.