Development of pure silica cha membranes for co2 separation

Daishi Takayama; Katsunori Ishii; Mikihiro Nomura; Takamasa Onoki; Takuya Okuno; Hiromasa Tawarayama; Shinji Ishikawa

doi:10.3390/membranes11120926

Development of pure silica cha membranes for co₂ separation

Daishi Takayama, Katsunori Ishii, Mikihiro Nomura, Takamasa Onoki, Takuya Okuno, Hiromasa Tawarayama, Shinji Ishikawa

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

3 Citations (Scopus)

Abstract

Thin pure-silica chabazite (Si-CHA) membranes have been synthesized by using a secondary growth method on a porous silica substrate. A CO₂ permeance of 2.62 × 10⁻⁶ mol m⁻² s⁻¹ Pa⁻¹ with a CO₂/CH₄ permeance ratio of 62 was obtained through a Si-CHA membrane crystallized for 8 h using a parent gel of H₂O/SiO₂ ratio of 4.6. The CO₂ permeance through the Si-CHA membrane on a porous silica substrate was twice as high as that through the membrane synthesized on a porous alumina substrate, which displayed a similar zeolite layer thickness.

Original language	English
Article number	926
Journal	Membranes
Volume	11
Issue number	12
DOIs	https://doi.org/10.3390/membranes11120926
Publication status	Published - 2021 Dec

Keywords

CO separation
Inorganic membrane
Membrane separation
Pure silica CHA-type zeolite
Silica substrates
Zeolite

ASJC Scopus subject areas

Chemical Engineering (miscellaneous)
Process Chemistry and Technology
Filtration and Separation

Access to Document

10.3390/membranes11120926

Cite this

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title = "Development of pure silica cha membranes for co2 separation",

abstract = "Thin pure-silica chabazite (Si-CHA) membranes have been synthesized by using a secondary growth method on a porous silica substrate. A CO2 permeance of 2.62 × 10−6 mol m−2 s−1 Pa−1 with a CO2/CH4 permeance ratio of 62 was obtained through a Si-CHA membrane crystallized for 8 h using a parent gel of H2O/SiO2 ratio of 4.6. The CO2 permeance through the Si-CHA membrane on a porous silica substrate was twice as high as that through the membrane synthesized on a porous alumina substrate, which displayed a similar zeolite layer thickness.",

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author = "Daishi Takayama and Katsunori Ishii and Mikihiro Nomura and Takamasa Onoki and Takuya Okuno and Hiromasa Tawarayama and Shinji Ishikawa",

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AU - Takayama, Daishi

AU - Ishii, Katsunori

AU - Nomura, Mikihiro

AU - Onoki, Takamasa

AU - Okuno, Takuya

AU - Tawarayama, Hiromasa

AU - Ishikawa, Shinji

PY - 2021/12

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