Abstract
A study has been made of the interaction between catalyst and solvents on the extent of the liquid-phase coal-hydrogenation reaction. Samples of a subbituminous Wyoming coal were impregnated with varying amounts of ferrous ion catalyst and hydrogenated at 440 C. Three different solvents were used. Differences in the conversion levels attained that were attributable to the solvents first decreased as the concentration of the catalyst on the coal increased to 1.0 wt%. Further increase in the catalyst concentration had little effect on conversion. The results indicate that even when ferrous ion catalyst is used, the solubility characteristics of the solvent, as measured by the nonpolar solubility parameter, are important in obtaining maximum yields of benzene-soluble products. 8 references.
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