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Citation: Wen Bin, Zhang Peng, Wang Qi. Methane Adsorption on Specially Prepared Active Carbons Under Pressure[J]. Chinese Journal of Applied Chemistry, ;1999, 16(3): 33-36. shu

Methane Adsorption on Specially Prepared Active Carbons Under Pressure

1.
Department of Applied Chemistry, Beijing University of Chemical Technology, Beijing 100029

Received Date: 17 December 1998
Available Online: 23 March 1999

Active carbons with high adsorbability have been prepared from different raw materials by 3 activation methods: cyclic activation and activation with KOH or ZnCl₂ solution. Product CA58^# obtained from carbonized copra shell after 58 cyclic activations showed the best property: porosize distribution 0.8~2.0 nm, packing density 0.5410 g/mL, specific surface 2759 m²/g, effective absorbance 81.3 mg/g. (cyclic activation at 0.1~3.7 MPa). The effect of temperature on the adsorption isotherms of active carbon towards methane at pressure ranged from 0 to 5.0 MPa has been investigated. A hysteresis was observed on the adsorption and desorption isotherms. The specific surface and packing density are considered to be the most important characters for the adsorbent.
- active carbon,
- methane,
- adsorptive character,
- preparation
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