Esterification of Acrylic Acid with Different Alcohols Catalyzed by Zirconia Supported Tungstophosphoric Acid

The liquid phase esterification of acrylic acid with different alcohols (butanol, iso-butanol, or hexanol) was investigated in a batch reactor with zirconia supported tungstophosphoric acid (TPA) as heterogeneous catalyst. The prepared catalysts with different TPA loadings (20, 25, and 30 wt %) and...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2012-05, Vol.51 (19), p.6666-6671
Main Authors: Sert, Emine, Atalay, Ferhan Sami
Format: Article
Language:English
Subjects:
Acrylic acid
Alcohols
Applied sciences
Catalysis
Catalysts
Catalytic reactions
Chemical engineering
Chemistry
Diffraction
Esterification
Exact sciences and technology
General and physical chemistry
Reactors
Roasting
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Thermogravimetric analysis
Zirconium dioxide
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Summary:The liquid phase esterification of acrylic acid with different alcohols (butanol, iso-butanol, or hexanol) was investigated in a batch reactor with zirconia supported tungstophosphoric acid (TPA) as heterogeneous catalyst. The prepared catalysts with different TPA loadings (20, 25, and 30 wt %) and calcination temperatures (550, 650, and 750 °C) were characterized by nitrogen adsorption studies, X-ray diffraction (XRD), and thermogravimetric analysis (TGA) techniques. In addition, acidity measurements were performed by potentiometric titration with n-butylamine. The activitiy of catalysts strongly dependent on the acidic characteristic of the catalysts. The most active catalyst, 25 wt % TPA, calcined at 650 °C, gave more than 33%, 31%, and 27% conversions of acrylic acid for butyl, iso-butyl, and hexyl acrylate synthesis, respectively.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie202609f