Hydraulic Fracturing and Underground Coal Gasification in Connection with Hydrolytic Disproportionation of Carbon
Journal Title: Modern Approaches in Oceanography and Petrochemical Sciences - Year 2018, Vol 2, Issue 3
Abstract
Hydrolytic disproportionation of carbon (HDC) was proposed as an essential reaction in connection with coal mine methane formation in catastrophic events [1,2]. The calculated Gibbs free energy change of HDC or direct reduction of hydrogen from its oxide by coal in the form of carbon is 29.20 kJ/mol of methane or 14.60kJ/mol of carbon. It was shown that reaction of methane formation from carbon and water is a slightly endothermic process, but the products entropy increases, and the reaction is productfavored. Reaction entropy positive and this reaction could be an “entropy driven”. There was proposed a possibility that the size and tetrahedral structure of methane molecules, similar to the stereochemistry of the holes of water clathrates, gives additional features of favorable stereochemistry during the formation of intermediate stereo-structures of hydrotated coal rings, acetic acid like dimers and polymers and their subsequent transformation and decomposition during HDC with the production of methane and carbon dioxide as the final substances.
Authors and Affiliations
Vladimir Vigdergauz
Keywords
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- EP ID EP626234
- DOI 10.32474/MAOPS.2018.02.000137
- Views 63
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