CeO2 as a versatile and reusable catalyst for transesterification of esters with alcohols under solvent-free conditions

Masazumi Tamura, S. M.A. Hakim Siddiki, Ken Ichi Shimizu

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

CeO2 acted as an efficient and reusable heterogeneous catalyst for transesterification of esters with alcohols under the solvent-free conditions at 160 °C. Among the 11 kinds of metal oxides, CeO2 is the most suitable catalyst in terms of catalytic activity, leaching-resistance and reusability. This catalytic system tolerates various esters and alcohols, and valuable esters such as heteroaromatic esters and benzyl benzoates are produced, demonstrating a practical utility of the system. On the basis of kinetic analysis and in situ IR studies of adsorbed species, a reaction mechanism is proposed, in which proton abstraction of alcohol by a Lewis base site of CeO2 to yield alkoxide species is the rate-limiting step.

Original languageEnglish
Pages (from-to)1641-1646
Number of pages6
JournalGreen Chemistry
Volume15
Issue number6
DOIs
Publication statusPublished - 2013 Jun 1

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution

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