alexa Synthesis of Eugenyl Acetate in Solvent-Free Acetylatio
ISSN: 2157-7048

Journal of Chemical Engineering & Process Technology
Open Access

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Research Article

Synthesis of Eugenyl Acetate in Solvent-Free Acetylation: Process Optimization and Kinetic Evaluation

Denise A Laroque1, Raquel A Loss1,2, Maria JA Silva1, Gabriela N Pereira1, Alexsandra Valerio1, Haiko Hense1, Debora de Oliveira1 and J Vladimir Oliveira1*
1Department of Chemical and Food Engineering, UFSC, Florianopolis, SC, 88040-900, Brazil
2Universidade do Estado de Mato Grosso, UNEMAT, 78390-000, Barra do Bugres, MT, Brazil
Corresponding Author : J Vladimir Oliveira
Department of Chemical and Food Engineering
UFSC, Florianopolis, SC
88040-900, Brazil
Tel: 55 48 37212508
E-mail: [email protected]
Received September 19, 2015; Accepted September 25, 2015; Published September 30, 2015
Citation: Laroque DA, Loss RA, Silva MJA, Pereira GN, Valerio A, et al. (2015) Synthesis of Eugenyl Acetate in Solvent-Free Acetylation: Process Optimization and Kinetic Evaluation. J Chem Eng Process Technol 6:247. doi:10.4172/2157- 7048.1000247
Copyright: © 2015 Laroque DA, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

In this work, the synthesis of eugenyl acetate was evaluated in the presence of heterogeneous catalysts aiming developing an economical and environmentally friendly process. The catalysts used were molecular sieve 4Å and Amberlite XAD-16, and highest conversions were obtained in the investigated conditions by experimental design for both catalysts. In the kinetic study the effects of temperature, catalyst concentration and eugenol to acetic anhydride molar ratio in the conversion process were evaluated. The kinetics using molecular sieves 4Å were performed until 6 h of reaction, reaching conversions above 90% in 2 h and the activation energy was 2.40 kcal.mol-1. With Amberlite XAD-16 up to 2 h reactions were conducted and in just 3 min high reaction conversions (97.8%) were achieved with lower activation energy (1.73 kcal mol-1) than the molecular sieve, demonstrating that both catalysts are effective for producing the eugenyl acetate. Heterogeneous catalysts allowed reaching high conversions using less amounts of substrates, in a solvent-free system, and also making possible regeneration and reuse.

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