Kinetics for simultaneous HDS, HDN and hydrogenation model reactions. Comparison between Ni-Mo/Al sub 2 O sub 3 and Co-Mo/Al sub 2 O sub 3 catalysts

Conference · Wed Apr 01 04:00:00 EST 1987 · American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA)

OSTI ID:5110231

Zeuthen, P H; Stoltze, P; Bartholdy, J ^[1]

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1. Haldor Topsoee A/S, Lyngby (Denmark)

A kinetic analysis of simultaneous hydrodesulfurization (HDS) of dibenzothiophene (DBT), hydrodenitrogenation (HDN) of indole (IN) and hydrogenation (HYD) of naphthalene (NAP) has been carried out. These compounds represent the major functional groups in heavy petroleum feeds. The goal of these experiments is to study the commercial catalysts with more complex feedstocks. A specific purpose is to determine the competitive inhibition effects of the various reactants. Kinetic data were generated over standard NiMo/Al{sub 2}O{sub 3} and CoMo/Al{sub 2}O{sub 3} catalysts at temperatures of 260 to 350{degree}C. The partial pressures of hydrogen and the other reactants were varied individually. From the data, a kinetic model is developed based on the competitive chemisorption of reactants, intermediates and products on identical surface sites. The kinetic model developed accounts for the appearance of the products and rate of disappearance of DBT, NAP and IN. It is found that sulfur, nitrogen, aromatics and aliphatic-containing compounds adsorb at very different strength. On the basis of these results, it is shown that CoMo/Al{sub 2}O{sub 3} catalyst is more sensitive to adsorbates than the NiMo/Al{sub 2}O{sub 3} catalyst.

• OSTI ID: 5110231
• Report Number(s): CONF-8704347--
• Conference Information: Journal Name: American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA) Journal Volume: 32:2
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AROMATICS
AZAARENES
AZOLES
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COBALT
CONDENSED AROMATICS
DATA
DENITRIFICATION
DESULFURIZATION
ELEMENTS
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
HIGH TEMPERATURE
HYDROCARBONS
HYDROGENATION
INDOLES
INFORMATION
KINETICS
MATHEMATICAL MODELS
METALS
MOLYBDENUM
NAPHTHALENE
NICKEL
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYRROLES
REACTION KINETICS
THIONAPHTHENES
TRANSITION ELEMENTS