Influence of compressing pressure on macro void formation of carbon monolith for methane adsorption

  • Narandalai B Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, MAS 4th building, Peace Avenue, Bayanzurkh district, Ulaanbaatar 13330, Mongolia Department of Advanced Chemicals & Center for Functional Nano Fine Chemicals Chonnam National University, Gwangju, Korea 61186
  • W G Shim Department of Advanced Chemicals & Center for Functional Nano Fine Chemicals Chonnam National University, Gwangju, Korea 61186
  • M S Balathanigaimani Department of Chemical Engineering, Rajiv Gandhi Institute of Petroleum Technology, Ratapur Chowk, Rae Bareli, 229316 Uttar Pradesh
  • H Moon Department of Advanced Chemicals & Center for Functional Nano Fine Chemicals Chonnam National University, Gwangju, Korea 61186
Keywords: Anthracite based activated carbons, carbon monoliths, methane adsorption, porous texture characterization, adsorbed natural gas storage,

Abstract

Carbon monoliths for adsorbed natural gas (ANG) storage were prepared from Mongolian anthracite-based activated carbons using carboxy-methyl cellulose as a binder under different compressing pressures. Nitrogen adsorption/desorption experiments were carried out to obtain the specific surface area, pore volume, and pore size distribution of the monoliths.  Methane adsorption experiments on the carbon monoliths were conducted at different temperatures and pressures up to around 3.5 MPa in a high pressure volumetric adsorption apparatus. As expected, adsorption results indicated that the methane adsorption capacity of the carbon monoliths increased with increasing specific surface area and packing density.  The maximum volumetric adsorption of methane was observed as 163 V/V at 293 K and 3.5 MPa on a carbon monolith sample, PMAC1/2-3-65, that does not have the highest specific surface area but relatively high packing density comparing with other monoliths, which implies that two physical properties contribute contradictorily to the methane adsorption capacity.  Based on experimental results, the carbon monoliths prepared from Mongolian anthracite-based activated carbons can be promising media for ANG storage application.

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Abstract
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Published
2018-02-13
How to Cite
B, N., Shim, W., Balathanigaimani, M., & Moon, H. (2018). Influence of compressing pressure on macro void formation of carbon monolith for methane adsorption. Mongolian Journal of Chemistry, 18(44), 24-35. https://doi.org/10.5564/mjc.v18i44.934
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Articles