Carbon-14 tracer study of the conversion of labeled n-propylcyclopentane during n-octane aromatization with a Pt-zeolite L catalyst

Journal Article · Sun Mar 01 04:00:00 EST 1992 · Journal of Catalysis; (United States)

DOI:https://doi.org/10.1016/0021-9517(92)90227-9· OSTI ID:6984572

Huang, Chenshi; Sparks, D E; Dabbagh, H A; Davis, B H ^[1]

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1. Univ. of Kentucky, Lexington (United States)

n-Propylene cyclopentane or n-propylcyclopentane labeled in the ring with {sup 14}C was converted together with n-octane using a Pt-KL zeolite catalyst operating at 482 C and ca. 14 bar. The products indicate that hydrogenolysis to produce isooctanes, not ring expansion to produce aromatics, is the major reaction pathway for the alkyl cyclopentane compound. Dilution of the {sup 14}C activity in n-propylcyclopentane during the conversion shows that C{sub 5} as well as C{sub 6} cyclization occurs during the conversion of n-octane. The current data were obtained with a catalyst that has a Pt crystal size range that is similar to those reported earlier. Furthermore, the conversion data for n-octane and n-propylcyclopentane using the Pt-KL zeolite catalyst are very similar to data obtained with catalysts based on other nonacidic supports where the Pt crystals cannot be located in a zeolite type channel. Thus, for n-octane conversion, it appears that the Pt in L zeolite catalysts has selectivities that are similar to Pt on other nonacidic supports.

• OSTI ID: 6984572
• Journal Information: Journal of Catalysis; (United States), Journal Name: Journal of Catalysis; (United States) Vol. 134:1; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALKANES
AROMATIZATION
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBON 14
CARBON ISOTOPES
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CYCLOALKANES
DEHYDROGENATION
ELEMENTS
EVEN-EVEN NUCLEI
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
ISOMERIZATION
ISOTOPE APPLICATIONS
ISOTOPES
KINETICS
LIGHT NUCLEI
MATERIALS
METALS
MINERALS
NUCLEI
OCTANE
ORGANIC COMPOUNDS
PLATINUM
PLATINUM METALS
RADIOISOTOPES
REACTION INTERMEDIATES
REACTION KINETICS
SILICATE MINERALS
TRACER TECHNIQUES
TRANSITION ELEMENTS
YEARS LIVING RADIOISOTOPES
ZEOLITES