Limonene oxidation over V2O5/TiO2 catalysts

Paula C. F. C. Oliveira, M. L. Rojas-Cervantes, A. M. Ramos, I. M. Fonseca, A. M.Botelho do Rego, J. Vital

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51 Citations (Scopus)

Abstract

Vanadia-titania catalysts prepared by different sol-gel procedures were studied as heterogeneous catalysts for the liquid phase oxidation of limonene. The catalysts were characterized by XRD, XPS, ICP and nitrogen adsorption. According to the XRD results the catalyst samples can be divided in two different groups: anatase samples and anatase + rutile samples. XRD signals of vanadia are not found in the diffractograms. The main reaction products are polymers. Limonene oxide, limonene glycol, carveol and carvone are obtained in small amounts. A number of autoxidation products, alcohols, aldehydes and ketones, are also obtained. The effects of titania composition on the reaction orientation are discussed.

Original languageEnglish
Pages (from-to)307-314
Number of pages8
JournalCatalysis Today
Volume118
Issue number3-4 SPEC. ISS.
DOIs
Publication statusPublished - 15 Dec 2006

Keywords

  • Anatase
  • Limonene oxidation
  • Rutile
  • Vanadia-titania

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