Stability of the bituminous coal microstructure upon exposure to high pressures of helium

Sakurovs, Richard, Radliński, Andrzej P., Melnichenko, Yuri B., Blach, Tomas, Cheng, Gang, Lemmel, Hartmut, & Rauch, Helmut (2009) Stability of the bituminous coal microstructure upon exposure to high pressures of helium. Energy & Fuels, 23(10), pp. 5022-5026.

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Small-angle neutron scattering (SANS) and ultra-small-angle neutron scattering (USANS) measurements of the structure of two Australian bituminous coals (particle size of 1-0.5 mm) before, during, and after exposure to 155 bar of helium were made to identify any effects of pressure alone on the pore size distribution of coal and any irreversible effects upon exposure to high pressures of helium in the pore size range from 3 nm to 10 μm. No irreversible effects upon exposure were identified for any pore size. No effects of pressure on pore size distribution were observed, except for a small effect at a pore size of about 2 μm for one coal. This study provides a convenient baseline for SANS and USANS investigations on sorption of gases at elevated pressures on coals, by distinguishing between the effect of pressure alone on coal pore size distribution and against the effect of the gas to be investigated.

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10 citations in Scopus
8 citations in Web of Science®
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ID Code: 70387
Item Type: Journal Article
Refereed: Yes
DOI: 10.1021/ef900439d
ISSN: 1520-5029
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2009 American Chemical Society
Deposited On: 23 Apr 2014 05:07
Last Modified: 21 Jun 2017 00:01

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