ZIF-8 membranes supported on silicalite-seeded substrates for propylene/propane separation

Shailesh Dangwal; Anil Ronte; Han Lin; Ruochen Liu; Jiahua Zhu; Jong Suk Lee; Heather Gappa-Fahlenkamp; Seok Jhin Kim

doi:10.1016/j.memsci.2021.119165

ZIF-8 membranes supported on silicalite-seeded substrates for propylene/propane separation

Shailesh Dangwal, Anil Ronte, Han Lin, Ruochen Liu, Jiahua Zhu, Jong Suk Lee, Heather Gappa-Fahlenkamp, Seok Jhin Kim

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

Abstract

Zeolitic Imidazolate Framework-8 (ZIF-8) membranes have shown great potential for effective separation of industrially important propylene/propane gas mixtures. In this work, we coated the silicalite seed nanoparticles on the anodic alumina oxide (AAO) substrate in order to increase membrane-substrate bonding. ZIF-8 membrane was synthesized on a silicalite-seeded AAO substrate by secondary growth method. It was found that high quality ZIF-8 membrane was fabricated due to strong attachment of silicalite seed crystals to AAO substrates through hydrogen bonding. Moreover, when ZnCl₂ was used as the Zn source, the ZIF-8 layer was formed with larger ZIF-8 crystal size and a more intergrown surface than the layer in which ZnNO₃ was used. An excellent propylene/propane separation factor of 170 was obtained in a silicalite-seeded ZIF-8 membrane with ZnCl₂, which is twice that of a ZIF-8 membrane synthesized without the seeding process, and which is 3.6 times higher than a silicalite-seeded ZIF-8 membrane with ZnNO₃.

Original language	English
Article number	119165
Journal	Journal of Membrane Science
Volume	626
DOIs	https://doi.org/10.1016/j.memsci.2021.119165
State	Published - 15 May 2021
Externally published	Yes

Keywords

Propylene/propane separation
Secondary growth
Silicalite seeding
ZIF-8 membrane

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10.1016/j.memsci.2021.119165

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title = "ZIF-8 membranes supported on silicalite-seeded substrates for propylene/propane separation",

abstract = "Zeolitic Imidazolate Framework-8 (ZIF-8) membranes have shown great potential for effective separation of industrially important propylene/propane gas mixtures. In this work, we coated the silicalite seed nanoparticles on the anodic alumina oxide (AAO) substrate in order to increase membrane-substrate bonding. ZIF-8 membrane was synthesized on a silicalite-seeded AAO substrate by secondary growth method. It was found that high quality ZIF-8 membrane was fabricated due to strong attachment of silicalite seed crystals to AAO substrates through hydrogen bonding. Moreover, when ZnCl2 was used as the Zn source, the ZIF-8 layer was formed with larger ZIF-8 crystal size and a more intergrown surface than the layer in which ZnNO3 was used. An excellent propylene/propane separation factor of 170 was obtained in a silicalite-seeded ZIF-8 membrane with ZnCl2, which is twice that of a ZIF-8 membrane synthesized without the seeding process, and which is 3.6 times higher than a silicalite-seeded ZIF-8 membrane with ZnNO3.",

keywords = "Propylene/propane separation, Secondary growth, Silicalite seeding, ZIF-8 membrane",

author = "Shailesh Dangwal and Anil Ronte and Han Lin and Ruochen Liu and Jiahua Zhu and Lee, {Jong Suk} and Heather Gappa-Fahlenkamp and Kim, {Seok Jhin}",

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year = "2021",

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doi = "10.1016/j.memsci.2021.119165",

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T1 - ZIF-8 membranes supported on silicalite-seeded substrates for propylene/propane separation

AU - Dangwal, Shailesh

AU - Ronte, Anil

AU - Lin, Han

AU - Liu, Ruochen

AU - Zhu, Jiahua

AU - Lee, Jong Suk

AU - Gappa-Fahlenkamp, Heather

AU - Kim, Seok Jhin

PY - 2021/5/15

Y1 - 2021/5/15

N2 - Zeolitic Imidazolate Framework-8 (ZIF-8) membranes have shown great potential for effective separation of industrially important propylene/propane gas mixtures. In this work, we coated the silicalite seed nanoparticles on the anodic alumina oxide (AAO) substrate in order to increase membrane-substrate bonding. ZIF-8 membrane was synthesized on a silicalite-seeded AAO substrate by secondary growth method. It was found that high quality ZIF-8 membrane was fabricated due to strong attachment of silicalite seed crystals to AAO substrates through hydrogen bonding. Moreover, when ZnCl2 was used as the Zn source, the ZIF-8 layer was formed with larger ZIF-8 crystal size and a more intergrown surface than the layer in which ZnNO3 was used. An excellent propylene/propane separation factor of 170 was obtained in a silicalite-seeded ZIF-8 membrane with ZnCl2, which is twice that of a ZIF-8 membrane synthesized without the seeding process, and which is 3.6 times higher than a silicalite-seeded ZIF-8 membrane with ZnNO3.

AB - Zeolitic Imidazolate Framework-8 (ZIF-8) membranes have shown great potential for effective separation of industrially important propylene/propane gas mixtures. In this work, we coated the silicalite seed nanoparticles on the anodic alumina oxide (AAO) substrate in order to increase membrane-substrate bonding. ZIF-8 membrane was synthesized on a silicalite-seeded AAO substrate by secondary growth method. It was found that high quality ZIF-8 membrane was fabricated due to strong attachment of silicalite seed crystals to AAO substrates through hydrogen bonding. Moreover, when ZnCl2 was used as the Zn source, the ZIF-8 layer was formed with larger ZIF-8 crystal size and a more intergrown surface than the layer in which ZnNO3 was used. An excellent propylene/propane separation factor of 170 was obtained in a silicalite-seeded ZIF-8 membrane with ZnCl2, which is twice that of a ZIF-8 membrane synthesized without the seeding process, and which is 3.6 times higher than a silicalite-seeded ZIF-8 membrane with ZnNO3.

KW - Propylene/propane separation

KW - Secondary growth

KW - Silicalite seeding

KW - ZIF-8 membrane

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U2 - 10.1016/j.memsci.2021.119165

DO - 10.1016/j.memsci.2021.119165

M3 - 文章

AN - SCOPUS:85101377576

SN - 0376-7388

VL - 626

JO - Journal of Membrane Science

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ER -

ZIF-8 membranes supported on silicalite-seeded substrates for propylene/propane separation

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Keywords

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