Adsorption properties of templated mesoporous carbon (CMK-1) for nitrogen and supercritical methane - Experiment and GCMC simulation

Takahiro Ohkubo, Jin Miyawaki, Katsumi Kaneko, Ryong Ryoo, Nigel A. Seaton

研究成果: Contribution to journalArticle査読

102 被引用数 (Scopus)

抄録

Nitrogen adsorption isotherms at 77 K and high pressure adsorption of supercritical methane at 303 K were measured on mesoporous carbon (CMK-1) prepared from the templating of MCM-48. These experimental isotherms were simulated with grand canonical Monte Carlo (GCMC) simulation using the rod-aligned slitlike pore (RSP) model. This RSP model gives good agreement with the experimental nitrogen adsorption isotherm in the low-pressure region, while it describes well the observed methane isotherm. The isothermal compressibility of the adsorbed methane at 303 K was calculated from the experimental and simulated isotherms. The isothermal compressibility of the adsorbed methane shows the intermediate state between the supercritical and liquid phase. This indicates that the adsorbed layer of supercritical methane is highly compressed by the strong interaction potential from the pore walls.

本文言語英語
ページ(範囲)6523-6528
ページ数6
ジャーナルJournal of Physical Chemistry B
106
25
DOI
出版ステータス出版済み - 6 27 2002
外部発表はい

All Science Journal Classification (ASJC) codes

  • 物理化学および理論化学
  • 表面、皮膜および薄膜
  • 材料化学

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