Adsorptive separation of ethylene/ethane mixtures with CuCl@HY adsorbent: equilibrium and reversibility

作者：Gao, Fei; Wang, Yaquan^*; Wang, Xiao; Wang, Shuhai

来源：Journal of Porous Materials, 2017, 24(3): 713-719.

DOI：10.1007/s10934-016-0308-7

• CuCl@HY adsorbent
• Ethylene
• Selectivity
• Reversibility
• Isosteric heat

In this work, we investigate the potential of CuCl-functionalized HY zeolite (CuCl@HY) as an effective adsorbent for the ethylene/ethane separation. The CuCl@HY adsorbents were prepared with CuCl2 as precursor by a solid-state dispersion method, followed by the activation with CO. The CuCl@HY adsorbents with different CuCl loadings were investigated for ethylene and ethane adsorptions, and evaluated the reversibility for multiple ethylene adsorption/desorption cycles. The experimental results reveal that the optimal adsorbent with copper loadings of 5 mmol/g HY zeolite displays high ethylene adsorption capacity, high C2H4/C2H6 adsorption selectivity and good reversibility. In addition, the adsorption equilibrium isotherms of ethylene and ethane on CuCl@HY at temperatures up to 333 K can be well correlated by the Sips models, and the corresponding isosteric heats of adsorption are calculated using the Clausius-Clapeyron equation. The value of isosteric heat of adsorption suggests that the interaction of CuCl@HY with ethylene molecules is between physisorption and chemisorption.

• 出版日期2017-6
• 单位天津大学