Catalytic functionalities of supported sulfides. VI. The effect of H sub 2 S promotion on the kinetics of indole hydrogenolysis

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · Journal of Catalysis; (USA)

DOI:https://doi.org/10.1016/0021-9517(90)90280-W· OSTI ID:6352405

Massoth, F E; Balusami, K; Shabtai, J ^[1]

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1. Univ. of Utah, Salt Lake City (USA)

The kinetics of concurrent indole hydrogenolysis and naphthalene hydrogenation in the presence of varying concentrations of H{sub 2}S were studied in a fixed-bed reactor at 350{degree}C and 35 atm total pressure over a sulfided CoMo/Al{sub 2}O{sub 3} catalyst. Major reaction products from indole hydrogenolysis consisted of o-ethylaniline, ethylcyclohexane, and ethylbenzene, with small amounts of dihydroindole formed in equilibrium with indole. Data were analyzed with Langmuir-Hinshelwood rate equations. It was found that the rate of the first C-N bond-breaking step leading to o-ethylaniline depended on the square root of the H{sub 2}S partial pressure and was inhibited by indole and dihydroindole. Ring hydrogenation reactions were similarly inhibited, but were little affected by H{sub 2}S. The kinetic analyses support the concept that different catalyst sites are involved in the C-N hydrogenolysis and ring hydrogenation reactions. 19 refs.

• DOE Contract Number: FG22-83PC60812
• OSTI ID: 6352405
• Journal Information: Journal of Catalysis; (USA), Journal Name: Journal of Catalysis; (USA) Vol. 122:2; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALKANES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AMINES
ANILINE
AROMATICS
AZAARENES
AZOLES
BIMETALS
CATALYSIS
CATALYST SUPPORTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COBALT
CONDENSED AROMATICS
CYCLOALKANES
DEHYDROGENATION
ELEMENTS
EQUATIONS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROGENATION
INDOLES
KINETIC EQUATIONS
KINETICS
METALS
MOLYBDENUM
NAPHTHALENE
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYRROLES
REACTION KINETICS
SULFIDES
SULFUR COMPOUNDS
SURFACE PROPERTIES
SYNTHESIS
TRANSITION ELEMENTS