Abstract

The activity and selectivity of catalysts generated in situ from molybdenum naphthenate and excess sulfur for reactions occurring in coal-oil reactions have been examined. The reaction pathways for species representative of those present in coal and petroleum residuum are presented. The MoS 2 catalyst generated in situ promotes partial saturation of the multiring aromatic to hydroaromatic species but does not promote further saturation of the hydroaromatic or of single-ring alkyl-substituted aromatics. Heteroatom removal with this in situ generated MoS 2 catalyst follows two simultaneous reaction pathways: one for heteroatom removal prior to saturation of the aromatic rings producing alkyl-substituted single-ring aromatics and the other for heteroatom removal after saturation of the aromatic rings producing primarily alkyl-substituted cyclic hydrocarbons

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