Separation of Caffeine from Supercritical Carbon Dioxide with a Zeolite Membrane

Yoshihiro TOKUNAGA; Tomoyuki FUJII; Kozo NAKAMURA

doi:10.1271/bbb.61.1024

Bioscience, Biotechnology, and Biochemistry

Online ISSN : 1347-6947
Print ISSN : 0916-8451

Separation of Caffeine from Supercritical Carbon Dioxide with a Zeolite Membrane

Yoshihiro TOKUNAGA, Tomoyuki FUJII, Kozo NAKAMURA

著者情報

キーワード: supercritical carbon dioxide, membrane separation, zeolite menbrane, Dubinin-Astakhov analysis, Caffeine

ジャーナルフリー

1997 年 61 巻 6 号 p. 1024-1026

DOI https://doi.org/10.1271/bbb.61.1024

詳細

抄録

Caffeine was separated from supercritical carbon dioxide with a zeolite membrane that had been tested for pervaporation. The pore size of the NaY zeolite membrane was evaluated to be of subnanometer scale from the result of a Dubinin-Astakhov analysis. The rejection of caffeine was 0.98 by the zeolite membrane which would make it applicable for SCCO₂ membrane separation.

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Bulletin of the Agricultural Chemical Society of Japan

Agricultural and Biological Chemistry

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