Acid-Catalyzed Depolymerization of Coals of Different Rank under Mild Conditions with HF and Superacid HF/BF_3

摘要

Hydrgoen fluoride and amixtue of hydrogen fluoride/boron trifluoride were examined as acid catalysts for solubilization of coals of different coal rank under mild reaction conditions. Hydrogen fluoride along accelerated solubilization of the coals with toluene at 150 deg C to some extent. Mixtures of hydrogen fluride and born trifluoride in the presence of toluene at 150 deg C for 3 h under autogenous pressure were found to solubilize all coals nearly completely.