| 摘要 |
A process for reducing the amount of pyritic, organic and sulfate sulfur in coal and other carbonaceous materials by contacting sulfur-containing coal or carbonaceous material with hydrogen, transition metal salts and a buffer under increased temperature and pressure. Pyritic sulfides are reduced to ferrous sulfides and organic sulfides are converted to metal sulfides; the sulfides are, then, leached from the coal or carbonaceous material utilizing an acid solution. Alternatively, a metal compound may be added to the acid solution to promote the formation of hydrogen sulfide.
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