Nanosized gold-catalyzed selective oxidation of alkyl-substituted benzenes and n-alkanes

Ankush V. Biradar, Teddy Asefa

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

We report the synthesis of nanoporous silica-supported gold nanoparticle catalysts and their selective and efficient catalytic properties toward oxidation reactions of various substituted alkylbenzenes and linear alkanes. The Au nanoparticles were synthesized by reducing Au(III) ions in situ within the nanopores of hemiaminal-functionalized mesoporous silica by using the supported hemiaminal groups as reducing agents. The resulting mesoporous silica-supported gold nanoparticles efficiently catalyzed the oxidation reactions of different alkyl-substituted benzenes and linear alkanes with t-butyl hydroperoxide (TBHP) as an oxidant. The catalytic reactions gave up to ∼99% reactant conversion and up to ∼100% selectivity toward ketone products in some cases. This high selectivity toward ketone products by the catalysts was unprecedented, especially considering the fact that only mild reaction conditions and no additives were employed during the reactions.

Original languageEnglish
Pages (from-to)19-26
Number of pages8
JournalApplied Catalysis A: General
Volume435-436
DOIs
Publication statusPublished - Sep 5 2012

Fingerprint

Alkanes
Benzene
Silicon Dioxide
Gold
Paraffins
Silica
Nanoparticles
Ketones
Oxidation
tert-Butylhydroperoxide
Catalysts
Nanopores
Catalyst selectivity
Reducing Agents
Reducing agents
Oxidants
Ions

Keywords

  • Au catalysis
  • Au nanoparticles
  • Mesoporous catalyst
  • Nanocatalyst
  • Oxidation

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Nanosized gold-catalyzed selective oxidation of alkyl-substituted benzenes and n-alkanes. / Biradar, Ankush V.; Asefa, Teddy.

In: Applied Catalysis A: General, Vol. 435-436, 05.09.2012, p. 19-26.

Research output: Contribution to journalArticle

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