Tuning surface inductive electric field in microporous organic polymers for Xe/Kr separation

doi:10.1016/j.cej.2021.131271

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	Tuning surface inductive electric field in microporous organic polymers for Xe/Kr separation
	Y. Wu; W. Zhang; S. Chen; Y. Fu; T. Yan; W. Huang; Z. Zhang; B. Yang and H. Ma
	2021
发表期刊	Chemical Engineering Journal
ISSN	13858947
卷号	426
摘要	Understanding how the local polar sites in porous adsorbent surface affect their adsorption performance remains a challenge in molecular related separation process. We present an in-depth study of silver (Ag), cobalt (Co), iron (Fe) and nickel (Ni) ions on hyper cross-linked microporous organic polymer (HCP) in which all metal ions act as polar sites for xenon (Xe) and krypton (Kr) adsorption. Surface electrostatic potential analysis revealed that Xe adsorption strength at metal sites differs from that of Kr. Charge density difference analysis proved that the precise charge transfer between metal ions and Xe. These effects could strengthen the inductive energy caused by surface electric field for Xe adsorption in metal ions decorated HCP (HCP-M). Adsorption kinetics experiments showed that the adsorption rates of Xe on HCP-M (20.4547.19 cm3/(cm3s)) are much higher than that of Kr (9.4517.38 cm3/(cm3s)). The HCP-Ni can adsorb 90 ml Xe per volume with 16.20 Xe/Kr selectivity in Xe, Kr and N2 ternary gas mixture, which was among the well performing porous organic polymers reported. The Xe/Kr adsorptive separation performance of HCP-M stemmed mainly from the optimized inductive energy and the small-pore confinement effect of HCP-M, which could significantly facilitate preferential selective adsorption of Xe over Kr. 2021 Elsevier B.V.
DOI	10.1016/j.cej.2021.131271
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收录类别	SCI ; EI
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/65718
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y. Wu,W. Zhang,S. Chen,et al. Tuning surface inductive electric field in microporous organic polymers for Xe/Kr separation[J]. Chemical Engineering Journal,2021,426.
APA	Y. Wu.,W. Zhang.,S. Chen.,Y. Fu.,T. Yan.,...&B. Yang and H. Ma.(2021).Tuning surface inductive electric field in microporous organic polymers for Xe/Kr separation.Chemical Engineering Journal,426.
MLA	Y. Wu,et al."Tuning surface inductive electric field in microporous organic polymers for Xe/Kr separation".Chemical Engineering Journal 426(2021).

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