Version 1
: Received: 3 June 2024 / Approved: 3 June 2024 / Online: 3 June 2024 (09:51:02 CEST)
Version 2
: Received: 25 June 2024 / Approved: 26 June 2024 / Online: 27 June 2024 (08:05:52 CEST)
Karakullukçu, N.T.; Muğlu, H.; Yakan, H.; Yılmaz, V.M.; Marah, S.; İnce, İ.A. Kinetic Insights into the Antioxidant Effect of Isatin-Thiosemicarbazone in Biodiesel Blends. Antioxidants2024, 13, 819.
Karakullukçu, N.T.; Muğlu, H.; Yakan, H.; Yılmaz, V.M.; Marah, S.; İnce, İ.A. Kinetic Insights into the Antioxidant Effect of Isatin-Thiosemicarbazone in Biodiesel Blends. Antioxidants 2024, 13, 819.
Karakullukçu, N.T.; Muğlu, H.; Yakan, H.; Yılmaz, V.M.; Marah, S.; İnce, İ.A. Kinetic Insights into the Antioxidant Effect of Isatin-Thiosemicarbazone in Biodiesel Blends. Antioxidants2024, 13, 819.
Karakullukçu, N.T.; Muğlu, H.; Yakan, H.; Yılmaz, V.M.; Marah, S.; İnce, İ.A. Kinetic Insights into the Antioxidant Effect of Isatin-Thiosemicarbazone in Biodiesel Blends. Antioxidants 2024, 13, 819.
Abstract
Biodiesel has several drawbacks, such as being prone to oxidation, having reduced stability, and having limited storage time. Antioxidants compatible with biodiesel are being used to address its drawbacks. The use of antioxidants in biodiesel has a significant impact on the environment and economy, especially in promoting sustainable energy. The study used blends consisting of 20% biodiesel and 80% diesel fuel. Isatin-thiosemicarbazones were tested as additives in blends at a concentration of 3000 parts per million (ppm) using an oxifast device. Comparing them to the chemical antioxidant Trolox. FT-IR, DSC, and TGA were used to characterize these samples. DSC measured sample crystallization temperatures (Tc). Samples with antioxidants showed decreased values compared to the non-antioxidant diesel sample D100. Several DSC tests were conducted to determine the antioxidant strengths of various samples. The results showed that the FT-IR spectrum's antioxidant effect regions grow clearer with antioxidants. The extra antioxidant is effective. Biodiesel's oxidative stability improves with isatin-thiosemicarbazones at varying concentrations. The kinetics of thermal decomposition of isatin-thiosemicarbazones under non-isothermal conditions have been determined using the Kissinger, Ozawa, and Boswell techniques. The activation energies of compounds 1 and 2 were calculated 137–147 kJ mol-1 and 173–183 kJ mol-1, respectively.
Keywords
thiosemicarbazones; biodiesel; oxidative stability; kinetic study; energy
Subject
Chemistry and Materials Science, Materials Science and Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
