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

Research output: Contribution to journalArticlepeer-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 languageAmerican English
Pages (from-to)277-281
Number of pages5
JournalJournal of Molecular Catalysis A: Chemical
Volume187
Issue number2
DOIs
StatePublished - 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

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