The nature of the adsorbate and adsorbent affects adsorption. Easily liquefiable gases like carbon dioxide, ammonia, chlorine, etc. have higher adsorption than elemental gases like oxygen, nitrogen, etc.
Other factors that affect gas adsorption on solids are: Temperature The affinity of molecules for each other increases as temperature rises. Thus, at high temperatures, more gas can be adsorbed per unit surface area.
Pressure Gas pressure also affects gas adsorption on solids. Higher gas pressure means more molecules are packed together on the solid surface, increasing the affinity of these molecules for each other.