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Similar Compositions of Alkanes from Coal Petroleum Natural Gas
Ratios of Organic Carbon Nitrogen and Hydrogen in Recent
Chemistry of Humic Substances in Relation to Coaliflcation
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absorption acetylation acetylene adsorption aliphatic Analysis Antarctic coal anthracite anthraxolite aromatic atoms band bituminous coals carbon content Chem chemical coal samples coalification coke Coll composition compounds concentration decrease determined Devonian diabase diffusion DRY DAF DMF electron equation equilibrium exinite experimental extraction formation fraction fusain fusinites Geol Geological gram groups heating high volatile humic acids hydroaromatic hydrocarbons hydrogen increase indicate infrared isotherms kerogen lignite lithotypes macerals material metamorphism methane methanol micrinite microscope mineral Minshew molecular molecules nitrogen observed obtained occur Ohio Range organic oxidation oxygen particles petrographic phenanthrene pores present pressure pyrolysis radicals range rank coals ratio reaction reflectance resinites rock Seam sediments shale shown in Figure shows sill soluble sorption spectra structure substances sulfur surface Table temperature tetralin thermal tion trona acids values vanadium vitrain vitrinite vitrinoids W. E. Long yield