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Alkali synthesis of fatty acid butyl and ethyl esters and comparative bench motor testing of blended fuels on their basis

Serhiy Konovalov1, Liubov Patrylak1, Stepan Zubenko1, Mykhaylo Okhrimenko1, Angela Yakovenko1, Anton Levterov2, Andriy Avramenko2
Affiliation: 
1 V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Science of Ukraine, 1, Murmanska St., 02094 Kyiv, Ukraine 2 A.M. Pydgorny Institute of Engineering Problems of National Academy of Science of Ukraine, 2/10, Pozharsky St., 61046 Kharkiv, Ukraine konovalovserhiy@gmail.com
DOI: 
https://doi.org/10.23939/chcht15.01.105
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Abstract: 
Alkaline transesterification of sunflower oil by n-butanol and ethanol on alkoxide-containing dried solutions of potassium hydroxide has been carried out. Complex character of spontaneous dividing of butanolysis products, accompanying with formation of three different species of glycerol layers, was observed. One of the later was found to be high-alkaline pure glycerol. Bench motor testing of biodiesel/diesel blends demonstrated slightly better power performance of butyl esters comparing with ethyl esters and regular decrease of harmful emissions (CO2, CO, NOx, CH) while increasing biodiesel fraction in mixture.
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