Articles with "coal pyrite" as a keyword



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Experimental Study on the Oxidation Reaction of Coal-Pyrite and Mineral-Pyrite with the Participation of Fe(III) and Bacteria under Acidic Conditions

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Published in 2023 at "Energies"

DOI: 10.3390/en16083588

Abstract: As one of the crucial factors contributing to coal spontaneous combustion, the oxidation of pyrite is a complex process involving multiple reactions, particularly in the presence of oxidants (Fe3+ and O2) and bacteria. However, experimental… read more here.

Keywords: oxidation; oxidation reaction; coal; coal pyrite ... See more keywords
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The Effect of Carbon Defects in the Coal–Pyrite Vacancy on the Electronic Structure and Optical Properties: A DFT + U Study

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Published in 2020 at "Minerals"

DOI: 10.3390/min10090815

Abstract: Pyrite is a mineral often associated with coal in coal seams and is a major source of sulfur in coal. Coal–pyrite is widely distributed, easily available, low-cost, and non-toxic, and has high light absorption coefficient.… read more here.

Keywords: carbon; absorption coefficient; electronic structure; carbon defects ... See more keywords
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Research on the Effect of Carbon Defects on the Hydrophilicity of Coal Pyrite Surface from the Insight of Quantum Chemistry

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Published in 2019 at "Molecules"

DOI: 10.3390/molecules24122285

Abstract: To investigate the effect of carbon defects on the hydrophilicity of the whole surface of the coal pyrite, the adsorption of the single H2O molecule at different sites of the coal pyrite surface was studied… read more here.

Keywords: pyrite surface; carbon; chemistry; coal pyrite ... See more keywords