Catalytic hydrogenation of cyclohexene 8. Gas-phase reaction on supported nickel

Journal Article · Mon May 01 04:00:00 EDT 1989 · Journal of Catalysis; (USA)

DOI:https://doi.org/10.1016/0021-9517(89)90218-2· OSTI ID:6219910

Boudart, M; McConica, C M ^[1]

---

1. Stanford Univ., CA (USA)

The gas-phase hydrogenation of cyclohexane was studied on seven nickel catalysts supported on silica. The initial turnover frequency was almost independent of the size of Ni particles between 1 and 5 nm. It declined with time during each run because of adsorbed benzene produced by a side reaction, the disproportionation of cyclohexene to benzene and cyclohexane. The latter were found to be products of the reaction in the absence of hydrogen. In the presence of hydrogen, benzene was formed but did not desorb as a reaction product at 273 K. The hydrogenation of cyclohexene was independent of particle size yet disproprotionation leading to benzene adsorption varied with particle size.

• OSTI ID: 6219910
• Journal Information: Journal of Catalysis; (USA), Journal Name: Journal of Catalysis; (USA) Vol. 117:1; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ADSORPTION
ALKANES
ALKENES
AROMATICS
BENZENE
CATALYST SUPPORTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
CYCLOALKANES
CYCLOALKENES
CYCLOHEXANE
ELEMENTS
HEXENES
HYDROCARBONS
HYDROGEN
HYDROGENATION
METALS
MINERALS
NICKEL
NONMETALS
ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SIZE
SORPTION
SYNTHESIS
TIME DEPENDENCE
TRANSITION ELEMENTS