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Loy Yang brown coal treated with cobalt acetate/ammonium molybdate (Co/Mo) gave lower conversions than the very high values obtained for the same coal treated with nickel acetate/ammonium molybdate (Ni/Mo) when reacted with hydrogen at 400°C. The difference in conversions obtained between the two catalyst systems decreased with increasing time. Addition of sulphur as carbon disulphide (CS 2...
Two coals (Beulah, PSOC-1483, and a Thai coal, TH23) of unusually high reactivity with hydrogen and tetralin were shown to contain significant methoxy group contents. The fate of the methoxy groups when these coals were reacted under N 2 at 320 o C (with and without added decalin) and with H 2 -tetralin and H 2 SnO 2 at 405 o C was studied. The reactions...
Well-characterized coals of different H/C atomic ratio and rank were reacted at 365 o C with CO, H 2 and CO H 2 mixtures in water in the presence and absence of sodium aluminate. The optimum H 2 /CO ratio for conversion was found to vary with the type of coal. It was <1 : 1 for low-rank and subbituminous coals, whereas the conversion of bituminous coals either did...
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