Catalytic hydrogenolysis of aromatic ketones by a sol-gel entrapped combined Pd-[Rh(cod)Cl]2 catalyst

Raed Abu-Reziq; David Avnir; Jochanan Blum

doi:10.1016/S1381-1169(02)00235-2

Catalytic hydrogenolysis of aromatic ketones by a sol-gel entrapped combined Pd-[Rh(cod)Cl]₂ catalyst

Raed Abu-Reziq, David Avnir^*, Jochanan Blum

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

Co-entrapment of palladium nanoparticles and soluble [Rh(cod)(μ-Cl)]₂ in a silica sol-gel matrix forms a catalyst that promotes exhaustive hydrogenation and hydrogenolysis of various aromatic ketones. While the hydrogenation of acetophenone may proceed by initial formation of α-phenylethanol followed by dehydration to styrene and further reduction of the olefinic and aromatic C-C bonds, the reaction of benzophenone and related compounds does not involve the intermediary of a carbinol. The immobilized combined catalyst is leach-proof and perfectly recyclable in at least five consecutive runs. Its unique catalytic activity is attributed to a synergistic effect between the different metal atoms.

Original language	English
Pages (from-to)	277-281
Number of pages	5
Journal	Journal of Molecular Catalysis A: Chemical
Volume	187
Issue number	2
DOIs	https://doi.org/10.1016/S1381-1169(02)00235-2
State	Published - 18 Sep 2002

Bibliographical note

Funding Information:
We thank the Israel Science Foundation for financial support of this study through Grant nos. 143/00-12.0 and 96/98-2 and the Ministry of Science Art and Sport for support through the Tashtiot Project.

Keywords

Hydrogenation
Ketones
Palladium
Rhodium
Sol-gel

Access to Document

10.1016/S1381-1169(02)00235-2

Cite this

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title = "Catalytic hydrogenolysis of aromatic ketones by a sol-gel entrapped combined Pd-[Rh(cod)Cl]2 catalyst",

abstract = "Co-entrapment of palladium nanoparticles and soluble [Rh(cod)(μ-Cl)]2 in a silica sol-gel matrix forms a catalyst that promotes exhaustive hydrogenation and hydrogenolysis of various aromatic ketones. While the hydrogenation of acetophenone may proceed by initial formation of α-phenylethanol followed by dehydration to styrene and further reduction of the olefinic and aromatic C-C bonds, the reaction of benzophenone and related compounds does not involve the intermediary of a carbinol. The immobilized combined catalyst is leach-proof and perfectly recyclable in at least five consecutive runs. Its unique catalytic activity is attributed to a synergistic effect between the different metal atoms.",

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