Esterification of acetic acid with n-butanol using molybdenum oxides supported on γ-alumina

Gheorghita Mitran, Éva Makó, Ákos Rédey, Ioan Cezar Marcu

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Two γ-alumina-supported molybdenum oxide catalysts with different Mo loadings were prepared by the impregnation of a precipitated alumina. The alumina support and the supported catalysts were characterized using X-ray diffraction, N2 adsorption and NH3-TPD techniques and tested in the liquid-phase esterification of acetic acid with n-butanol. The effects of the reaction time, of the molar ratio of the reactants, of the speed of agitation and of the mass fraction of the catalyst on the catalytic properties were studied. After only 120 min of reaction at 100 °C with an n-butanol to acetic acid mole ratio equal to 3 the conversion reached 81% in the presence of the supported catalyst containing 10 wt% MoO3 (10Mo-Al2O3 sample). The conversion as well as the total NH3-TPD acidity increased in the following order: Al 2O3 < 5Mo-Al2O3 (5 wt% MoO 3/Al2O3) < 10Mo-Al2O3. The selectivity of n-butyl acetate was, in all cases, 100%. No loss in catalytic activity and product selectivity after three cycles with 10Mo-Al 2O3 catalyst was observed. Graphical Abstract: [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)32-37
Number of pages6
JournalCatalysis Letters
Volume140
Issue number1-2
DOIs
Publication statusPublished - Nov 1 2010

Keywords

  • Acetic acid
  • Butyl acetate
  • Esterification
  • N-Butanol
  • γ-Alumina- supported molybdenum oxide

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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