Gas-Phase Adsorption Characteristics of High-Surface Area Carbons Activated from Meso-Carbon Micro-beads

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Masaki Nozawa¹  Tomoshige Nitta¹  Shuzo Kida¹ 

[1] Department of Chemical Engineering, Osaka University

关键词: Gas-phase Adsorption;    Isotherm;    Mixed Gas;    Active Carbon;    Meso-phase Micro-beads;    Methane;    Ethane;    Carbon Dioxide;   

DOI  :  10.1252/jcej.25.176

来源: Maruzen Company Ltd

【 摘 要 】

References(13)Cited-By(12)Gas-phase adsorption characteristics of three active carbons, differing in BET surface area, was investigated by measuring the adsorption isotherms of methane, carbon dioxide, and ethane at 273.15, 298.15, and 323.15 K up to 1200 kPa. Among active carbons M-20, M-30, and M-38, having approximately 2000, 3000 and 3800 m2/g BET surface areas respectively, carbon M-30 adsorbs the largest amount of methane and carbon dioxide, while carbon M-38 adsorbs the most ethane at elevated pressure, in a slightly stepwise manner. These adsorption characteristics were explained by the pore-size distribution data (0.4–0.5 nm for M-20 and M-30; 0.5–0.7 nm for M-38) and analysis by use of an isotherm equation. Mixed-gas adsorption data are obtained for two binary gases, methane + ethane and carbon dioxide + ethane, on M-38 at 298.15 K and 500 kPa, which are correlated by the ideal adsorbed solution theory.

【 授权许可】

Unknown