CHARACTERIZATION OF SELENIUM CATALYST FOR COAL LIQUEFACTION IN TERMS OF HYDROGENATION AND CRACKING ABILITY.

The activities of selenium and zinc chloride catalysts upon transferable hydrogen in coal have been investigated by **1H-NMR. Se is more active than ZnCl//2 for hydrogen transfer in the coal/anthracene system. The change of radical concentration was monitored by high temperature ESR. It was confirmed that radical concentration in the coal/Se system is greater than that in the coal/ZnCl//2 system at the early stage of pyrolysis. It was concluded that Se has a higher cracking activity as well as hydrogen transfer ability and there is the potential for the use of Se as a catalyst for coal liquefaction.