Conversion of n-hexane over Pt/Al sub 2 O sub 3 and Sn-Pt/Al sub 2 O sub 3 catalysts. A comprehensive reaction mechanism study

Conference · Sat Aug 01 00:00:00 EDT 1987 · American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA)

OSTI ID:5335549

Margitifalvi, J L; Szedlacsek, P; Talas, E; Hegedus, M ^[1]

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1. Central Research Institute, Budapest (Hungary)

The steady state and transient kinetics of n-hexane conversion was stuided over Pt/Al{sub 2}O{sub 3} and different Sn-Pt/Al{sub 2}O{sub 3} catalysts in the temperature range between 480-520{degree}C. Three types of tin-platinum catalysts were investigated: {und Type A}: with direct tin-platinum interaction; {und Type B}: with no metallic tin, but strong tin-alumina interaction; {und Type C}: combination of Type A and B. On the monometallic catalysts at low conversion level the main {und primary} reaction products are: light hydrocarbons, 1-hexene and benzene. Isohexances (2-methylpentane and 3-methylpentanes) and methylcyclopentanes appeared to be secondary reaction products. The transient kinetic experiments give strong evidence for competition between the hydrocarbon and hydrogen for the catalytically active sites. On monometallic and A type bimetallic catalysts the direct route for benzene formation prevailed, contrary to that on B and C type catalysts the consecutive dehydrogenation route dominated via formation of mono- and diolefin intermediates.

• OSTI ID: 5335549
• Report Number(s): CONF-8708312--
• Journal Information: American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA), Journal Name: American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA) Vol. 32:3; ISSN 0569-3799; ISSN ACPCA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALKANES
ALKENES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AROMATICS
BENZENE
CATALYSIS
CATALYSTS
CATALYTIC CRACKING
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CRACKING
DATA
DECOMPOSITION
ELEMENTS
EXPERIMENTAL DATA
HEXANE
HEXENES
HYDROCARBONS
INFORMATION
KINETICS
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM
PLATINUM METALS
PYROLYSIS
REACTION KINETICS
STEADY-STATE CONDITIONS
SYNTHESIS
THERMOCHEMICAL PROCESSES
TIN
TRANSIENTS
TRANSITION ELEMENTS