Polynuclear Aromatic Hydrocarbons Hydrogenation. 1. Experimental Reaction Pathways and Kinetics

The relationship between molecular structure and hydrogenation reactivity in heavy oil hydroprocessing was sought via the elucidation of the controlling reaction pathways and kinetics of one-, two-, three-, and four-fused ring compounds. Hydrogenation reactions of o-xylene, tetralin, naphthalene, ph...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 1995-01, Vol.34 (1), p.101-117
Main Authors: Korre, Styliani C, Klein, Michael T, Quann, Richard J
Format: Article
Language:English
Subjects:
02 PETROLEUM
ALKYLATED AROMATICS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ANTHRACENE
AROMATICS
CATALYST SUPPORTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COBALT
CONDENSED AROMATICS
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROAROMATICS
HYDROCARBONS
HYDROGENATION
KINETICS
METALS
MOLYBDENUM
NAPHTHALENE
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PHENANTHRENE
POLYCYCLIC AROMATIC HYDROCARBONS
PROCESSING
PYRENE
REACTION KINETICS
REFINING
TETRALIN
TRANSITION ELEMENTS 020400 > Petroleum-- Processing
VISCOSITY
XYLENES
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Summary:The relationship between molecular structure and hydrogenation reactivity in heavy oil hydroprocessing was sought via the elucidation of the controlling reaction pathways and kinetics of one-, two-, three-, and four-fused ring compounds. Hydrogenation reactions of o-xylene, tetralin, naphthalene, phenanthrene, anthracene, pyrene, and chrysene and their multicomponent mixtures were studied in cyclohexane solvent using a presulfided CoMo/Al[sub 2]O[sub 3] catalyst in a 1-liter batch autoclave at P[sub H[sub 2]] = 68.1 atm and T = 350 C. Quantitative network analysis allowed estimation of 45 hydrogenation rate parameters and an equal number of equilibrium ratios for 36 aromatic and hydroaromatic compounds. These values were then used in the evaluation of five adsorption parameters for aromatic ring number-based lumps from the multicomponent mixture experiments. Three classes of hydrogenation were discerned, based on the magnitude of numerator rate parameters. The adsorption parameters clearly increased with increasing aromatic ring number.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie00040a008