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Title: Characterization of Porosity and Pore Accessibility of Vitrinite-Rich Bituminous and Subbituminous Coals by Small-Angle Neutron Scattering, Mercury Intrusion Porosimetry, and Low-Pressure N2 Adsorption

Abstract

Three bituminous and one subbituminous vitrinite-rich coals were characterized using small-angle neutron scattering with contrast matching, mercury intrusion porosimetry, and low-pressure N2 adsorption techniques to quantify their porosity and pore accessibility in an effort to assess their solvent extractabilities, as a first approximation, for manufacturing useful end-products. The techniques revealed consistent results while complimenting one another. The total porosity was found to follow the coal rank with the lowest rank having the highest porosity within the studied coals. The amount of inaccessible pores was found to increase with rank for the bituminous coals studied here. Finally, the increase in the ease of accessibility and total porosity with decreasing rank suggested easier penetration of chemical reagents for solvent extraction, for example.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [2]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
+ Show Author Affiliations
  1. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
  2. Pennsylvania State Univ., University Park, PA (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy and Carbon Management (FECM)
OSTI Identifier:
1997801
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Energy and Fuels
Additional Journal Information:
Journal Volume: 37; Journal Issue: 1; Journal ID: ISSN 0887-0624
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; adsorption; coal; mercury; porosity; probes

Citation Formats

Cakmak, Ercan, Annamraju, Aparna, Mathews, Jonathan P., He, Lilin, Gallego, Nidia, and Lara-Curzio, Edgar. Characterization of Porosity and Pore Accessibility of Vitrinite-Rich Bituminous and Subbituminous Coals by Small-Angle Neutron Scattering, Mercury Intrusion Porosimetry, and Low-Pressure N2 Adsorption. United States: N. p., 2022. Web. doi:10.1021/acs.energyfuels.2c02814.
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Cakmak, Ercan, Annamraju, Aparna, Mathews, Jonathan P., He, Lilin, Gallego, Nidia, & Lara-Curzio, Edgar. Characterization of Porosity and Pore Accessibility of Vitrinite-Rich Bituminous and Subbituminous Coals by Small-Angle Neutron Scattering, Mercury Intrusion Porosimetry, and Low-Pressure N2 Adsorption. United States. https://doi.org/10.1021/acs.energyfuels.2c02814
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Cakmak, Ercan, Annamraju, Aparna, Mathews, Jonathan P., He, Lilin, Gallego, Nidia, and Lara-Curzio, Edgar. Wed . "Characterization of Porosity and Pore Accessibility of Vitrinite-Rich Bituminous and Subbituminous Coals by Small-Angle Neutron Scattering, Mercury Intrusion Porosimetry, and Low-Pressure N2 Adsorption". United States. https://doi.org/10.1021/acs.energyfuels.2c02814. https://www.osti.gov/servlets/purl/1997801.
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@article{osti_1997801,
title = {Characterization of Porosity and Pore Accessibility of Vitrinite-Rich Bituminous and Subbituminous Coals by Small-Angle Neutron Scattering, Mercury Intrusion Porosimetry, and Low-Pressure N2 Adsorption},
author = {Cakmak, Ercan and Annamraju, Aparna and Mathews, Jonathan P. and He, Lilin and Gallego, Nidia and Lara-Curzio, Edgar},
abstractNote = {Three bituminous and one subbituminous vitrinite-rich coals were characterized using small-angle neutron scattering with contrast matching, mercury intrusion porosimetry, and low-pressure N2 adsorption techniques to quantify their porosity and pore accessibility in an effort to assess their solvent extractabilities, as a first approximation, for manufacturing useful end-products. The techniques revealed consistent results while complimenting one another. The total porosity was found to follow the coal rank with the lowest rank having the highest porosity within the studied coals. The amount of inaccessible pores was found to increase with rank for the bituminous coals studied here. Finally, the increase in the ease of accessibility and total porosity with decreasing rank suggested easier penetration of chemical reagents for solvent extraction, for example.},
doi = {10.1021/acs.energyfuels.2c02814},
journal = {Energy and Fuels},
number = 1,
volume = 37,
place = {United States},
year = {Wed Dec 14 00:00:00 EST 2022},
month = {Wed Dec 14 00:00:00 EST 2022}
}
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https://doi.org/10.1021/acs.energyfuels.2c02814
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