Adsorption kinetics of various gases in carbon molecular sieves (CMS) produced from palm shell

被引:46
作者
Ahmad, M. A. [1 ]
Daud, W. M. A. Wan [2 ]
Aroua, M. K. [2 ]
机构
[1] Univ Sci Malaysia, Sch Chem Engn, Nibong Tebal 14300, Penang, Malaysia
[2] Univ Malaya, Dept Chem Engn, Kuala Lumpur 50603, Malaysia
关键词
palm shell; activation; benzene deposition; carbon molecular sieves;
D O I
10.1016/j.colsurfa.2007.06.040
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Carbon molecular sieves (CMS) have been prepared from locally available palm shell of Tenera type by a thermal treatment technique involving carbonization followed by steam activation and benzene deposition technique. Carbonization of the dried palm shells was done at 900 degrees C for duration of 1 h followed by steam activation at 830 degrees C for 30-420 min to achieve activated carbons with different degree of burn-offs. The highest micropore volume of activated carbon obtained at 53.2% burn-off was found suitable to be used as a precursor for CMS production. Subsequent benzene deposition onto activated samples at temperature range from 600 to 900 degrees C for various benzene concentrations have resulted in a series of CNIS with different kinetic selectivities. The molecular sieving behaviour of the CNIS products was assessed by kinetic adsorption isotherms of O-2, N-2, CO2 and CH4 at room temperature. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:131 / 135
页数:5
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