Effect of iron and sulphur compounds on liquefaction of Wyoming subbituminous coal

Abstract The effects of Fe 2 O 3 , sulphided Fe 2 O 3 , CS 2 and sulphur on the liquefaction of Clovis Point subbituminous coal (Powder River Basin, Wyoming) in a 2dm 3 autoclave Magnedrive II batch reactor have been evaluated. All these additives increased the distillate yields and, with the exception of elemental sulphur, decreased the pyridine-insoluble, unconverted coal yields. In the batch reactor, CS 2 was the most effective in increasing distillate yields and decreasing gas yields, while Fe 2 O 3 was the most effective in decreasing unconverted coal yields.