Absorption and desorption ability of propane and propylene on zeolites

Zeolites used as hydrocarbon adsorbents are paid more and more attention. Admixture of propane and propylene were used as probe molecules for HC. Adsorption and desorption behaviors of HC on four types of zeolites were studied using transient switch response(TSR) and temperature program desorption (TPD). The experimental results demonstrated that β-2 zeolite had the highest desorption temperature of propane (422℃) and propylene (450℃) ,and adsorption amount of hydrocarbon was 3.24 mL·g~(-1); desorption temperature of propane and propylene over ZSM-5-3 zeolite was 130℃ and 127℃,respectively and adsorption amount of hydrocarbon was 7.87 mL·g~(-1).