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-; CODEN: ACPCA
• Journal Information: American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA), Vol. 32:3; Conference: Symposium on advances in naphtha reforming, New Orleans, LA (USA), 30 Aug - 4 Sep 1987; ISSN 0569-3799
• Country of Publication: United States
• Language: English

Related Subjects

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