1. Development of Pure Silica CHA Membranes for CO2 Separation
- Author
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Daishi Takayama, Takuya Okuno, Gabriel Gama da Silva Figueiredo, Ishikawa Shinji, Katsunori Ishii, Takamasa Onoki, Mikihiro Nomura, and Hiromasa Tawarayama
- Subjects
CO2 separation ,Chabazite ,Materials science ,education ,Filtration and Separation ,TP1-1185 ,Permeance ,Article ,silica substrates ,Membrane technology ,Chemical engineering ,parasitic diseases ,Chemical Engineering (miscellaneous) ,membrane separation ,inorganic membrane ,zeolite ,pure silica CHA-type zeolite ,Zeolite ,Porosity ,Chemical technology ,Process Chemistry and Technology ,technology, industry, and agriculture ,Substrate (chemistry) ,equipment and supplies ,Layer thickness ,Membrane ,TP155-156 - 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.
- Published
- 2021
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