Synthesis of Guanidine and Its Deposition on Bacterial Cellulose as Green Heterogeneous Catalyst for Transesterification to Methyl Esters
Cristian Eugen Răducanu,
Tănase Dobre,
Dan Eduard Mihăiescu,
Alina Moroşan,
Roxana Jidveian,
Doinița Roxana Cioroiu Tîrpan,
Alexandru Dan Vasiliu,
Cristina Ionela Gogoaşă,
Oana Cristina Pârvulescu,
Bogdan Trică
Affiliations
Cristian Eugen Răducanu
Department of Chemical and Biochemical Engineering, National University of Science and Technology Politehnica Bucharest, 1-7 Gheorghe Polizu St., 011061 Bucharest, Romania
Tănase Dobre
Department of Chemical and Biochemical Engineering, National University of Science and Technology Politehnica Bucharest, 1-7 Gheorghe Polizu St., 011061 Bucharest, Romania
Dan Eduard Mihăiescu
Department of Organic Chemistry, National University of Science and Technology Politehnica Bucharest, 1-7 Gheorghe Polizu St., 011061 Bucharest, Romania
Alina Moroşan
Department of Organic Chemistry, National University of Science and Technology Politehnica Bucharest, 1-7 Gheorghe Polizu St., 011061 Bucharest, Romania
Roxana Jidveian
Department of Chemical and Biochemical Engineering, National University of Science and Technology Politehnica Bucharest, 1-7 Gheorghe Polizu St., 011061 Bucharest, Romania
Doinița Roxana Cioroiu Tîrpan
Department of Chemistry and Chemical Engineering, Ovidius University of Constanţa, 124 Mamaia Blvd., 900527 Constanţa, Romania
Alexandru Dan Vasiliu
Department of Chemical and Biochemical Engineering, National University of Science and Technology Politehnica Bucharest, 1-7 Gheorghe Polizu St., 011061 Bucharest, Romania
Cristina Ionela Gogoaşă
Department of Chemical and Biochemical Engineering, National University of Science and Technology Politehnica Bucharest, 1-7 Gheorghe Polizu St., 011061 Bucharest, Romania
Oana Cristina Pârvulescu
Department of Chemical and Biochemical Engineering, National University of Science and Technology Politehnica Bucharest, 1-7 Gheorghe Polizu St., 011061 Bucharest, Romania
Bogdan Trică
National Institute for Research Development for Chemistry and Petrochemistry-ICECHIM, 202 Spl. Independentei, S6, 060021 Bucharest, Romania
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.
