Removal of Organic Sulphur in Coal by the Use of Anhydrous HF and Superacid HF/BF_3
Anhydrous hydrogen fluoride (HF) and HF combined with a small amount of boron trifluoride(BF<SUB>3</SUB>) desulphurized high-sulphur coal in the presence of hydrocarbons without H<SUB>2</SUB> in mild reaction conditions. HF removed mainly sulphidic and oxidized sulphur. HF/BF<SUB>3</SUB> decreased thiophenic sulphur as well as sulphidic and oxidized sulphur although the extent of desulphurization was almost the same as that with HF alone.
- Chemistry letters
Chemistry letters 1997(9), 943-944, 1997-09
The Chemical Society of Japan