Abstract
Publisher Summary This chapter establishes a quantitative hydrogen transfer processes of diarylalkane in thermolysis, hydrogenolysis, and hydrogenation with a dispersed catalyst in the presence of a hydrogen donor solvent. Cracking of dinaphthylethane and diphenylethane (DPE) is studied in 9,10-dihydrophenanthrene or tetralin in the presence of a highly dispersed catalyst, such as Mo(CO) 6 -S, and Ru(acac) 3 . In cracking, the amount of hydrogen required for stabilizing free radicals and hydrogenating aromatic rings are predominantly supplied from gas phase in the absence of the hydrogen donor solvent. In the reactions with the hydrogen donor solvent, the amount of hydrogen transferred from gas phase considerably decreased, and the conversion and the decomposition of 1,2-(1,1'-)dinaphthylethane (DNE) and DPE lowered with the active catalyst, such as dispersed Mo or Ru. The hydrogen donor solvent retarded the catalyzed cracking of DNE and DPE because of the competitive adsorption of the model compound and the hydrogen donor solvent on the catalyst surface.
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