Abstract
Hydrogen transfer from donor solvents to coal has been studied since the development of the Pott-Broche process [ 1--5]. Such hydrogen transfer occurs in the absence of external (added) catalysts. Possible catalysis of the hydrogen transfer by external catalysts has apparently received little attention. This communicat ion is concerned with hydrogen donation from tetralin to coal in the presence of either cobalt-molybdate-alumina (Co/Mo/AI203) or stannous chloride (SnC12 2H20). The former is known to be outstanding for hydrodesulfurization, the latter for hydroliquefaction of coal. Procedures and calculational methods differed in detail from those described by Neavel [5], but definitions of hydrogen transfer and coal conversion are the same as his.
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