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- W1980727921 abstract "The Mössbauer effect has been used to study, under liquefaction conditions, the effect of additives (S, FeS2, Fe7S8 and Fe) on the transformation of pyrite in fresh Blacksville No. 2 coal. It was observed that the addition of iron sulphides enhanced the conversion of the inherent pyrite in coal, an effect attributed to a combined cracking activity of the pyrrhotites and H2S on the less reactive organic covering of some of the inherent coal pyrite. The addition of sulphur produced a higher partial pressure of H2S; total conversion of pyrite to pyrrhotite was not observed. The stoichiometry of the pyrrhotites present in the residue of the experiment with sulphur showed a smaller atomic percentage of iron than in the experiment without additives, this change in stoichiometry being attributed to the higher partial pressure of H2S in the reactor. When metallic iron was added, the partial pressure of H2S in the reactor decreased (iron acts as a scavenger) and troilite was also formed." @default.
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- W1980727921 date "1983-08-01" @default.
- W1980727921 modified "2023-09-27" @default.
- W1980727921 title "Pyrite decomposition in fresh Blacksville No. 2 coal: Effect of additives" @default.
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- W1980727921 doi "https://doi.org/10.1016/0016-2361(83)90164-3" @default.
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