丙烷
微型多孔材料
石油化工
金属有机骨架
分离(统计)
热扩散率
分离过程
动能
化学
化学工程
材料科学
工艺工程
热力学
有机化学
吸附
复合材料
工程类
计算机科学
物理
机器学习
量子力学
作者
Libo Li,Rui-Biao Lin,Xiaoqing Wang,Wei Zhou,Litao Jia,Jinping Li,Banglin Chen
标识
DOI:10.1016/j.cej.2018.08.108
摘要
Propylene (C3H6)/propane (C3H8) separation is one of the most challenging as well as most energy-intensive separation processes in the petrochemical industry. Herein we report a microporous metal–organic framework ELM-12 with appropriate channels where efficient separation of C3H6 over C3H8 is achieved via the kinetic separation effect. Time-dependent kinetic adsorption, density-functional theory calculation and breakthrough experiments collaboratively demonstrate that the considerable diffusivity difference between C3H6 and C3H8 accounts for the excellent separation performance of ELM-12. The high kinetic C3H6/C3H8 separation factor (204 at 298 K), large breakthrough time interval, and easy regeneration process of this MOF, make it a promising adsorbent for this important separation task. Furthermore, this material is highly stable under ambient condition and its production can be easily scaled up, rendering it quite favorable for practical industrial application.
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