STUDY OF ACID CATALYSTS IN THE GLYCEROL ETHERIFICATION WITH BENZYL ALCOHOL

Authors

  • Andrea Merlo Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco", 47 nro. 257 (1900) La Plata, Buenos Aires, Argentina
  • Mónica Casella Centro de Investigación y Desarrollo en Ciencias Aplicadas “Dr. Jorge J. Ronco” (CINDECA) - CCT-CONICET La Plata- Universidad Nacional de La Plata, Calle 47 Nº 257, 1900, La Plata, Argentina
  • María Eugenia Chiosso Centro de Investigaciones y Transferencia del Noroeste de la Provincia de Buenos Aires (CITNOBA) - UNNOBA-UNSAdA-CONICET, Monteagudo 2772, 2700 Pergamino, Argentina

DOI:

https://doi.org/10.52292/j.laar.2023.1162

Keywords:

sulfonic grups, heteropolyacids (HPA), carbon, heterogeneous catalysts

Abstract

Glycerol (Gly) is the major by-product of the biodiesel production (approximately 10 wt.%). There are different research focusing on developing glycerol utilization to produce value-added chemicals. One of them is the etherification with alcohols in the presence of acidic catalysts. In the present work, the catalytic behaviour of SiO2-based system functionalized with heteropolyacids (HPA: H3O40PW12.xH2O) was studied in the etherification of Gly with benzyl alcohol (BA). The solids were impregnated with different solutions of a HPA (28, 35 and 40%) and characterized. Very good catalytic performance was achieved (94% conversion and 78% of selectivity to ME1: 3-benzyloxy-1, 2-propanediol) after 360 min of reaction, at 120°C and Gly: BA= 3:1, with 10 wt.% of SiO2-HPA35. This system was compared with functionalized carbon-based catalysts (Cst-SO3H and Ccs-SO3H) and it was observed that the results were similar, conversion over 90% and selectivity between 70 -80% to some of the desired products (ME1).

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Published

2023-01-01

Issue

Vol. 53 No. 1 (2023): Latin American Applied Research

Section

XXII Congreso Argentino de Catálisis

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