Abstract
The paper deals with the synthesis and study of mixed (unsymmetrical) 1,4-butanediol diesters of petroleum acids and aliphatic fatty acids (С6–С8). High yield of the target product (90.3%) was reached under the following conditions: temperature 110–120°С, catalyst amount 1.3 wt % (based on the acid), acid : alcohol molar ratio 2 : 1.4. The physicochemical parameters and structures of the products were determined. The mixed 1,4-butanediol esters obtained are well compatible with polyvinyl chloride, forming colorless elastic compounds. The diesters were tested as antioxidants enhancing the thermal oxidation resistance of diesel fuel. The amount of the precipitate formed by oxidative polymerization and polycondensation of diesel fuel due to the presence of heteroatomic compounds decreases from 4.6 to 1.0 mg/100 mL fuel on adding 0.004 wt % diesters prepared.
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ACKNOWLEDGMENTS
The authors are grateful to S.F. Akhmedbekov (Laboratory of Spectroscopic Analysis, Mammadaliyev Institute of Petrochemical Processes, Ministry of Science and Education of Azerbaijan Republic) for the assistance in studying the compounds synthesized and to A.A. Jafarov (Laboratory of Liquid-Phase Oxidation, Mammadaliyev Institute of Petrochemical Processes, Ministry of Science and Education of Azerbaijan Republic) for the assistance in the paper correction. The authors are also particularly grateful to Scientific Editor M.L. Khrushcheva for thorough paper preparation for publication.
Funding
The compounds were prepared at the Mammadaliyev Institute of Petrochemical Processes, Ministry of Science and Education of Azerbaijan Republic.
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N.F. Sadiyeva: idea of the study; G.G. Nasibova and L.M. Efendiyeva: synthesis of synthetic petroleum acids; N.F. Sadiyeva and Yu.P. Cherepnova: synthesis of the mixed diesters; S.A. Iskenderova: check of the diester for the compatibility with polyvinyl chloride; S.G. Aliyeva: testing of the diester as a component enhancing the thermal oxidation resistance of diesel fuel; T.A. Mazamova: sample preparation and determination of the acid value and saponification value of the ready compound.
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Translated from Zhurnal Prikladnoi Khimii, No. 4, pp. 345–349, August, 2023 https://doi.org/10.31857/S0044461823040035
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Sadiyeva, N.F., Nasibova, G.G., Iskenderova, S.A. et al. Synthesis and Study of Mixed Diesters of Synthetic Petroleum Acids and Fatty Acids. Russ J Appl Chem 96, 417–421 (2023). https://doi.org/10.1134/S1070427223040031
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DOI: https://doi.org/10.1134/S1070427223040031