Glycerol Acetylation with Propionic Acid Using Iron and Cobalt Oxides in Al-MCM-41 Catalysts

Author:

Tentor Fabio Ribeiro1,Dias Diego Borelli1,Gomes Mateus Rosolen1,Vicente João Guilherme Pereira2ORCID,Cardozo-Filho Lúcio3ORCID,Berezuk Marcio Eduardo1ORCID

Affiliation:

1. Department of Chemical Engineering, Federal University of Technology – Paraná, Apucarana 86812460, Paraná, Brazil

2. FACENS University Center, Sorocaba 18085784, São Paulo, Brazil

3. State University of Maringá, Brazil

Abstract

In this work, Al-MCM-41 molecular sieves were synthesized, containing iron and/or cobalt oxides, impregnated by incipient wetness method, characterized and applied as catalysts in the acetylation reaction of glycerol with propionic acid to produce green glyceryl propionate molecules of high commercial value. According to this, X-ray Diffraction (XRD), X-ray Fluorescence (XRF), Fourier Transform Infra Red (FT-IR), adsorption/desorption N2 isotherms, textural analysis, and Scanning Electron Microscope (SEM) analysis were recorded to evaluate the main characteristics of materials. The presence of Lewis and Brønsted acidic sites and catalysts surface area were observed as important key points to functionalize acetylation reaction. Thus, time reaction, temperature, and glycerol / propionic acid ratio varied to improve the most suitable reaction conditions and behaviors. As a result, glycerol conversion was above 96%, followed by 68% of selectivity to glyceryl monopropionate as well as the formation of glyceryl di- and tri- propionate and a small amount of ethylene glycol dipropionate as an undesired product. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Funder

UTFPR – Campus Apucarana

Publisher

Bulletin of Chemical Reaction Engineering and Catalysis

Subject

Process Chemistry and Technology,Catalysis

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