Size Effect in Ethylene Hydrogenation over Palladium Catalysts Supported on γ-Al2O3

Colloid deposition was used to prepare catalysts with controlled-size palladium nanoparticles supported on γ-Al 2 O 3 . The rate of ethylene hydrogenation was found to increase with increasing diameter of the palladium nanoparticles in the 4-6 nm range. The effective reaction activation energy was f...

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Bibliographic Details
Published inTheoretical and experimental chemistry Vol. 52; no. 6; pp. 364 - 368
Main Authors Kalishyn, Ye. Yu, Ordynskyi, V. V., Bychko, I. B., Kaidanovych, Z. V., Trypolskyi, A. I., Strizhak, P. E.
Format Journal Article
LanguageEnglish
Published New York Springer US 2017
Springer Nature B.V
Subjects
Activation energy
Catalysts
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Colloids
Hydrogenation
Nanoparticles
palladium nanoparticles
ethylene hydrogenation
size effect
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Summary:Colloid deposition was used to prepare catalysts with controlled-size palladium nanoparticles supported on γ-Al 2 O 3 . The rate of ethylene hydrogenation was found to increase with increasing diameter of the palladium nanoparticles in the 4-6 nm range. The effective reaction activation energy was found to be independent of the size of the palladium nanoparticles. Thus, this nanodimensional effect may be a consequence of change in the ratio of the areas of the different crystallographic faces of palladium on the catalyst surface.
ISSN:0040-5760
1573-935X
DOI:10.1007/s11237-017-9491-0