Synthesis of Guanidine and Its Deposition on Bacterial Cellulose as Green Heterogeneous Catalyst for Transesterification to Methyl Esters
Author:
Răducanu Cristian Eugen1, Dobre Tănase12, Mihăiescu Dan Eduard3, Moroşan Alina3ORCID, Jidveian Roxana1, Cioroiu Tîrpan Doinița Roxana4, Vasiliu Alexandru Dan1, Gogoaşă Cristina Ionela1, Pârvulescu Oana Cristina1, Trică Bogdan5ORCID
Affiliation:
1. Department of Chemical and Biochemical Engineering, National University of Science and Technology Politehnica Bucharest, 1-7 Gheorghe Polizu St., 011061 Bucharest, Romania 2. Technical Sciences Academy of Romania, 26 Dacia Blvd., 030167 Bucharest, Romania 3. Department of Organic Chemistry, National University of Science and Technology Politehnica Bucharest, 1-7 Gheorghe Polizu St., 011061 Bucharest, Romania 4. Department of Chemistry and Chemical Engineering, Ovidius University of Constanţa, 124 Mamaia Blvd., 900527 Constanţa, Romania 5. National Institute for Research Development for Chemistry and Petrochemistry-ICECHIM, 202 Spl. Independentei, S6, 060021 Bucharest, Romania
Abstract
Green catalysts used in the transesterification reaction of biodiesel must have biodegradability and non-toxicity as their main characteristics, being thus friendly to the environment, since they perform in processes in which the content of CO2, which is increasing from year to year, should be reduced. As a consequence, their manufacture can be extremely rigorous. This work presents the two-step construction, synthesis, and deposition of such a green heterogeneous catalyst and its testing in the catalysis of the transesterification of triglycerides with methanol, resulting in methyl esters. A CSTR-type reactor was used to perform transesterification, and the biodiesel yields obtained had values in the range of 91.7–95.7%, using 2, 3, and 4 g/g catalyst to oil, under conditions like those for obtaining commercial biodiesel in homogeneous catalysis, i.e., a 65 °C process temperature and a 4:1, 5:1 or 6:1 methanol-to-oil molar ratio.
Funder
European Regional Development Fund through the Competitiveness Operational Program 2014 Ministry of Research, Innovation and Digitization
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