Oxyfunctionalisation of toluene with activated t-butyl hydroperoxide

Saravanamurugan Shunmugavel, M. Palanichamy, V. Murugesan

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Oxyfunctionalisation of toluene with activated t-butyl hydroperoxide (TBHP) was studied in the liquid phase over Ti(IV) supported on NaY zeolite (Ti-NaY), silylated Ti-NaY (Sil-Ti-NaY), silica-supported titanium isopropoxide (Si-Ti((OPr)-Pr-i) and silylated silica- supported Ti((OPr)-Pr-i) {Sil-Si-Ti((OPr)-Pr-i)}at 30 and 80degreesC. Increase in temperature increased the TBHP conversion, and increase in the catalyst loading increased both conversion and high selectivity to benzaldehyde and benzyl alcohol. Though Ti-NaY gave high selectivity to benzaldehyde at 30degreesC, the conversion was less. Silylated catalysts gave higher conversion than their parents, suggesting the importance of hydrophobicity for this reaction. The order of activity of the catalysts with respect to conversion at 30 and 80degreesC for 12 h of the title reaction is Sil-Si-Ti((OPr)-Pr-i) > Si-Ti-NaY>Si-Ti((OPr)-Pr-i) approximate to Ti-NaY (C) 2004 Elsevier B.V. All rights reserved.
Original languageEnglish
JournalApplied Catalysis A: General
Volume273
Issue number1-2
Pages (from-to)143-149
Number of pages7
ISSN0926-860X
DOIs
Publication statusPublished - 2004
Externally publishedYes

Keywords

  • AROMATIC compounds
  • Alcohols
  • Aldehydes
  • Catalysis
  • Catalyst activity
  • Catalyst selectivity
  • Catalysts
  • Chromium
  • Hydrophobicity
  • Peroxides
  • Silica
  • Titanium
  • Zeolites
  • Aromatic compounds
  • NaY-zeolite
  • Oxyfunctionalisation
  • Silylation
  • TBHP
  • Titanium (IV) isopropoxide
  • Toulene
  • Titanium(IV)isopropoxide
  • T
  • X
  • CHEMISTRY,
  • ENVIRONMENTAL
  • TITANIUM-SILICA CATALYST
  • HYDROGEN-PEROXIDE
  • EPOXIDATION
  • ALKENES
  • CYCLOHEXENE
  • OXIDATION
  • PHASE
  • H2O2
  • oxyfunctionalisation
  • titanium(IV)isopropoxide
  • silylation

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