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Esterification of Acetic Acid with n-Butanol Using Molybdenum Oxides Supported on γ-Alumina

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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: Al2O3 < 5Mo−Al2O3 (5 wt% MoO3/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–Al2O3 catalyst was observed.

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Authors and Affiliations

  1. Department of Chemical Technology and Catalysis, Faculty of Chemistry, University of Bucharest, 4-12, Blv. Regina Elisabeta, 030018, Bucharest, Romania

    Gheorghita Mitran & Ioan-Cezar Marcu

  2. Institute of Materials Engineering, Faculty of Engineering, University of Pannonia, 10 Egyetem St, 8201, Veszprém, Hungary

    Éva Makó

  3. Department of Environmental Engineering and Chemical Technology, Faculty of Engineering, University of Pannonia, 10 Egyetem St, 8201, Veszprém, Hungary

    Ákos Rédey

Authors
  1. Gheorghita Mitran
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  2. Éva Makó
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  3. Ákos Rédey
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  4. Ioan-Cezar Marcu
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Correspondence to Ioan-Cezar Marcu.

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Mitran, G., Makó, É., Rédey, Á. et al. Esterification of Acetic Acid with n-Butanol Using Molybdenum Oxides Supported on γ-Alumina. Catal Lett 140, 32–37 (2010). https://doi.org/10.1007/s10562-010-0431-z

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  • DOI: https://doi.org/10.1007/s10562-010-0431-z

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