Cycloalkene hydrogenation over palladium catalysts

• Published in: Applied catalysis. A, General Vol. 187; no. 1; pp. 161 - 168
• Main Authors: Jackson, S.David, Kelly, Gordon J, Watson, Simon R, Gulickx, R
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 18.10.1999; Elsevier
• Subjects: Catalysis; Catalytic reactions; Chemistry; Cycloalkene; Exact sciences and technology; General and physical chemistry; Hydrogenation; Palladium; Particle size effects; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Cycloalkene; Palladium; Hydrogenation; Particle size effects; Particle size; Catalytic reaction; Deactivation; Hydrocarbon; Transition metal; Experimental study; Carbon; Silica; Supported catalyst; Heterogeneous catalysis; Zirconium Oxides; Platinoid; Alumina; Ethylenic compound; Catalyst support
• ISSN: 0926-860X; 1873-3875
• DOI: 10.1016/S0926-860X(99)00204-5

We have studied the hydrogenation of cyclopentene, cyclohexene, cycloheptene, and cis-cyclooctene over Pd/alumina, Pd/carbon, Pd/silica, and Pd/zirconia catalysts. The hydrogenation reaction and the carbon deposition reaction both showed evidence for particle size sensitivity. The trend in activity with particle size was not the same for all the cycloalkenes, with cycloheptene hydrogenation increasing with particle size, whereas for the other cycloalkenes tested, the activity maximised at approximately 3.5 nm. The origin of these effects is suggested to be related to the mode and strength of adsorption of the cycloalkene.