Solid Acid Resin Amberlyst 45 as a Catalyst for the Transesterification of Vegetable Oil.
| Autor: | Cabral NM; Group of Renewable Energy, Nanotechnology, and Catalysis (GreenCat), Department of Chemistry, Federal University of São Carlos, São Carlos, Brazil., Lorenti JP; Group of Renewable Energy, Nanotechnology, and Catalysis (GreenCat), Department of Chemistry, Federal University of São Carlos, São Carlos, Brazil., Plass W; Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Jena, Germany., Gallo JMR; Group of Renewable Energy, Nanotechnology, and Catalysis (GreenCat), Department of Chemistry, Federal University of São Carlos, São Carlos, Brazil. |
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| Jazyk: | angličtina |
| Zdroj: | Frontiers in chemistry [Front Chem] 2020 Apr 29; Vol. 8, pp. 305. Date of Electronic Publication: 2020 Apr 29 (Print Publication: 2020). |
| DOI: | 10.3389/fchem.2020.00305 |
| Abstrakt: | Commercial transesterification of vegetable oil to biodiesel using alkaline hydroxides requires expensive refined vegetable oil and anhydrous alcohols to avoid saponification. These issues are not present in the acid-catalyzed process; however, the challenge still lies in developing stable and active solid acid catalysts. Herein, Amberlyst 45, a resin for high-temperature application, was efficiently used for biodiesel production by the methanolysis or ethanolysis of vegetable oil. Yields of up to 80 and 84% were obtained for the fatty acid methyl ester and the fatty acid ethyl ester, respectively. Two processes are proposed and showed to be efficient: (i) incremental addition of alcohol along with the reaction for both methanolysis and ethanolysis; or (ii) one-pot reaction for ethanolysis using oil/ethanol molar ratio of 1/18. The catalytic system used also showed to be compatible with used oil (2.48 ± 0.03 mg (Copyright © 2020 Cabral, Lorenti, Plass and Gallo.) |
| Databáze: | MEDLINE |
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