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Mixed matrix membranes with a thermally rearranged polymer and ZIF-8 for hydrogen separation

Title
Mixed matrix membranes with a thermally rearranged polymer and ZIF-8 for hydrogen separation
Author
이영무
Keywords
Thermally rearranged polymer; Zeolitic imidazole framework-8; Mixed matrix membranes; Gas separation; Hydrogen separation
Issue Date
2019-07
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF MEMBRANE SCIENCE, v. 582, Page. 381-390
Abstract
Mixed matrix membranes (MMMs) with a thermally rearranged (TR) polymer and zeolitic imidazolate framework- 8 (ZIF-8) were prepared in this study. ZIF-8 contributed to not only enhancing gas permeability, but also promoting thermal conversion of TR polymer membranes. As a result, TR ZIF-8 MMMs can be prepared at lower temperatures compared to the original TR polymers. The thermal rearrangement process also increased gas separation properties as it contributes to a tunable cavity size and hour-glass shape cavity distributions. Moreover, interfacial voids between the polymer phase and ZIF crystals which usually occur in most MMMs disappeared during thermal rearrangement of the TR polymer. As a result, the TR ZIF-8 MMMs showed excellent hydrogen separation properties with a H-2 permeability of 1,206 Barrer, H-2/N-2 selectivity of 22.3, and H-2/CH4 selectivity of 25.7.
URI
https://www.sciencedirect.com/science/article/pii/S0376738819304120?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/152156
ISSN
0376-7388; 1873-3123
DOI
10.1016/j.memsci.2019.04.029
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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