期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 98, 期 1-3, 页码 62-69出版社
ELSEVIER
DOI: 10.1016/j.micromeso.2006.05.018
关键词
zeolite; DD3R; adsorption; gas separation
Clathrasil Deca-dodecasil 3R (DD3R) zeolite was synthesized in this study. Then, adsorption properties of carbon dioxide and methane were examined on the all-silica DD3R zeolite. Pure component adsorption isotherms are reported at temperatures of 273-348 K and pressures as high as 3 MPa. The isotherms follow a typical Type-I shape according to the Brunauer classification. They are well described using Langmuir and multi-site Langmuir models. Isosteric heats of adsorption and Henry's Law constants of all adsorbates were determined. High selectivity of adsorption for carbon dioxide over methane suggests that the all-silica DD3R is an effective adsorbent or zeolite membrane material that can separate carbon dioxide and methane gaseous mixtures. (C) 2006 Elsevier Inc. All rights reserved.
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