THE CATALYTIC HYDROGEN REDUCTION AND DEUTERIUM EXCHANGE OF CYCLOPENTANONE ON EVAPORATED METAL FILMS AND SOME OBSERVATIONS ON CYCLOHEXANONE

Journal Article · Tue Aug 26 04:00:00 EDT 1958 · Proc. Roy. Soc. (London)

DOI:https://doi.org/10.1098/rspa.1958.0162· OSTI ID:4311133

Kemball, C; Stoddart, C T.H.

Some catalytic reactions of cyclopentanone vapor with hydrogen and with deuterium on evaporated metal films in a static system were followed by means of a mass spectrometer. Hydrogenation to cyclopentanol and hydrogenolysis with formation of cyclopentane and cyclopentene were observed to different extents on films of rhodium, palladium, platinum, tungsten, and nickel. Kinetic data, activation energies, and frequency factors were obtained for these reduction processes and possible mechanisms are discussed. Similar information was obtained for the exchange reactions. An order of activity of the metals for inducing fission of the C--O bond is given. Preliminary experiments with cyclohexanone indicated an analogous behavior to that found for cyclopentanone. A comparison is drawn between the reactions of the cyclic ketones and those found for acetone. (auth)

• Research Organization: Queen's Univ. of Belfast
• Sponsoring Organization: USDOE
• NSA Number: NSA-12-016209
• OSTI ID: 4311133
• Journal Information: Proc. Roy. Soc. (London), Journal Name: Proc. Roy. Soc. (London) Vol. Vol: A246
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACTIVATION ENERGY
BINDING ENERGY
CATALYSIS
CHEMICAL REACTIONS
CHEMISTRY
CYCLOALKANES
CYCLOALKENES
DECOMPOSITION
DEUTERIUM
EVAPORATION
EXCITATION
FILMS
HEXANE
HYDROGEN
ISOTOPIC EXCHANGE
KETONES
MASS SPECTROMETERS
MEASURED VALUES
MECHANICS
METALS
NICKEL
PALLADIUM
PENTANE
PLATINUM
REACTION KINETICS
REDUCTION
RHODIUM
TUNGSTEN
VAPORS