C3H6/C3H8 Adsorption Behavior Study of Stiffened ZIF‐8 Prepared under an Electric Field

Metal‐organic frameworks (MOFs) show great potential for adsorption separation. However, MOFs' flexibility may influence their adsorption behaviors. Here, for the first time we prepare ZIF‐8 powder dominated with stiffened ZIF‐8_Cm phase under an external E‐field. By comparison, we find that th...

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Bibliographic Details
Published inChemie ingenieur technik Vol. 94; no. 1-2; pp. 119 - 127
Main Authors Lyu, Luxi, Wu, Houxiao, Li, Libo, Wei, Yanying, Wang, Haihui
Format Journal Article
LanguageEnglish
Published 01.01.2022
Subjects
Adsorption separation
E‐field
Framework flexibility
Propene/propane
ZIF‐8
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Summary:Metal‐organic frameworks (MOFs) show great potential for adsorption separation. However, MOFs' flexibility may influence their adsorption behaviors. Here, for the first time we prepare ZIF‐8 powder dominated with stiffened ZIF‐8_Cm phase under an external E‐field. By comparison, we find that the flexibility of ZIF‐8 has little influence in equilibrium‐based separation behavior for C3H6/C3H8. However, the stiffened ZIF‐8 formed in E‐field presents an obviously decreased diffusion rate for C3H8, whose C3H6/C3H8 kinetic‐based separation factor is around 2.5 times higher than that of the traditional ZIF‐8 powder. ZIF‐8 was synthesized with an external electric field. It was found that it has more stiffened phase compared to traditional ZIF‐8. Adsorption experiments showed that the flexibility of ZIF‐8 influences its gas adsorption/separation performance especially for C3H6/C3H8 kinetic‐based separation.
ISSN:0009-286X
1522-2640
DOI:10.1002/cite.202000259