Development of Pure Silica CHA Membranes for CO(2) Separation

Thin pure-silica chabazite (Si-CHA) membranes have been synthesized by using a secondary growth method on a porous silica substrate. A CO(2) permeance of 2.62 × 10(−6) mol m(−2) s(−1) Pa(−1) with a CO(2)/CH(4) permeance ratio of 62 was obtained through a Si-CHA membrane crystallized for 8 h using a...

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Detalles Bibliográficos
Autores principales: Figueiredo, Gabriel Gama da Silva, Takayama, Daishi, Ishii, Katsunori, Nomura, Mikihiro, Onoki, Takamasa, Okuno, Takuya, Tawarayama, Hiromasa, Ishikawa, Shinji
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8708445/
https://www.ncbi.nlm.nih.gov/pubmed/34940427
http://dx.doi.org/10.3390/membranes11120926
Descripción
Sumario:Thin pure-silica chabazite (Si-CHA) membranes have been synthesized by using a secondary growth method on a porous silica substrate. A CO(2) permeance of 2.62 × 10(−6) mol m(−2) s(−1) Pa(−1) with a CO(2)/CH(4) permeance ratio of 62 was obtained through a Si-CHA membrane crystallized for 8 h using a parent gel of H(2)O/SiO(2) ratio of 4.6. The CO(2) 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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