期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 320, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.micromeso.2021.111096
关键词
Metal-organic frameworks; Pore environment; Breakthrough curves
类别
资金
- National Natural Science Foundation of China [21922810, 21908153, 21908155, 21878205]
- program of Innovative Talents of Higher Education Institutions of Shanxi
- Cultivate Scientific Research Excellence Programs of Higher Education Institutions in Shanxi (CSREP)
The development of ethane-selective adsorbents for purifying ethylene into polymer-grade materials is challenging but meaningful. By tailoring the pore chemistry of a metal-organic framework, high performance adsorbents like BUT-10 can be constructed to enhance C2H6 adsorption ability. Computational studies have shown that multiple adsorbate-framework interactions in the appropriate pore environment lead to stronger adsorption affinity for C2H6. Breakthrough experiments using BUT-10 as a C2H6-selective adsorbent have successfully produced polymer grade C2H4 directly from mixtures under ambient conditions.
The development of ethane (C2H6)-selective adsorbents displaying high uptake and selectivity to purify ethylene (C2H4) to obtain polymer-grade raw materials is a meaningful, but challenging process. Tailoring the pore chemistry of a metal-organic framework is an effective strategy used to construct high performance adsorbents. Herein, BUT-10 with a tailored pore environment for tuning the C2H6 adsorption ability has been synthesized via introducing functional sites into UiO-67. The single component gas adsorption capacity, adsorption heat and adsorption selectivity of BUT-10 have been proven to be effectively increased after modifying the pore environment. Computational studies have revealed that the stronger adsorption affinity for C2H6 was achieved via multiple adsorbate-framework interactions in the appropriate pore environment. Breakthrough experiments using BUT-10 as a C2H6-selective adsorbent have shown that polymer grade C2H4 was directly produced from C2H6/C2H4 (1/15 v/v) mixtures using a single separation process under ambient conditions.
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