The effect of alloying Pt with Re on the intermediates in hydrocarbon reactions: Reactions of 2,2-dimethylbutane

Journal Article · Sat Apr 01 04:00:00 EST 1989 · Journal of Catalysis; (USA)

DOI:https://doi.org/10.1016/0021-9517(89)90113-9· OSTI ID:6219926

Botman, M J.P.; de Vreugd, K; Zandbergen, H W; de Block, Z R; Ponec, V ^[1]

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1. Leiden Univ. (Netherlands)

A series of Pt-Re catalysts has been prepared and studied for reaction of 2,2-dimethylbutane (neohexane). The results, obtained at temperatures of 500-580 K, have been compared with those obtained with two commercial catalysts. The results show that rhenium is (at least partially) reduced and forms bimetallic clusters with Pt. At Re bulk concentrations less than 50% Re, catalysts behave like slightly modified Pt catalysts. On Pt-rich catalysts, isomerization is (or can be caused to be) important, while the Re-rich catalysts resemble Re. On Re, hydrogenolysis prevails and the extent of multiple (consecutive) reactions increases substantially. Multiple reactions are also enhanced when the Pt particle size of Pt catalysts is diminished. The two commercial catalysts fit quite well into the pattern obtained, indicating that also in commercial catalysts bimetallic clusters are formed.

• OSTI ID: 6219926
• Journal Information: Journal of Catalysis; (USA), Journal Name: Journal of Catalysis; (USA) Vol. 116:2; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALKANES
BIMETALS
CATALYSTS
CATALYTIC EFFECTS
CATALYTIC REFORMING
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COAL TAR OILS
COMPARATIVE EVALUATIONS
DEHYDROGENATION
DISTILLATES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HIGH TEMPERATURE
HYDROCARBONS
ISOMERIZATION
METALS
NAPHTHA
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARTICLE SIZE
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PLATINUM
PLATINUM METALS
QUANTITY RATIO
REFORMER PROCESSES
RHENIUM
SIZE
SYNTHESIS
TRANSITION ELEMENTS