Studies On Some Thiazolidinones As Antioxidants For Local Base Oil | ||||
Egyptian Journal of Chemistry | ||||
Article 5, Volume 62, Issue 7, July 2019, Page 1219-1234 PDF (2.06 MB) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/ejchem.2019.6662.1560 | ||||
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Authors | ||||
Hoda Abdelazeem Mohammed 1; Sayed K Attia2; Maher ibrahim nessim 3; Mohamed El-Badry Shaaban4; Ali Ahmed El-Bassoussi5 | ||||
1Analysis and evaluation department,Egyptian petroleum research institute (EPRI),Cairo,Egypt | ||||
2Analysis and evaluation department, Egyptian petroleum research institute (EPRI),Cairo, Egypt | ||||
3Egyptian Petroleum Research Institute | ||||
4Department of chemistry, faculty of science Ain sham university. | ||||
5Analysis and Evaluation Department,Egyptian Petroleum research institute,Cairo,Egypt. | ||||
Abstract | ||||
In this work, 5 Thiazolidinone derivatives of the type 5-benzylidene -2-(1-piperidinyl)-4-oxo-1,3-thiazolidine (101), 5-(4-butoxybenzylidene)-2-(1-piperidinyl)-4-oxo-1,3-thiazolidine (102), 5-(4-hexyloxybenzylidene)-2-(1-piperidinyl)-4-oxo-1,3-thiazolidine (103), 5-(4-octyloxybenzylidene)-2-(1-piperidinyl)-4-oxo-1,3-thiazolidine (104) and 5-(4-decyloxybenzylidene)-2-(1-piperidinyl)-4-oxo-1,3-thiazolidine (105) are synthesized and characterized using conventional tools analyses. They are tested as antioxidants for local base stock and the efficiency of these compounds, as antioxidants, was monitored through studying the change in total acid number and viscosity, the results reveal that the efficiency order is ranked as follows 105> 104> 103> 102> 101. The quantum chemical parameters such as the lowest unoccupied molecular orbital (LUMO), the highest occupied molecular orbital (HOMO) energy levels and the energy gap (EHOMO-ELUMO) were calculated. The experimental results were on the same line with the quantum chemical calculations. | ||||
Keywords | ||||
Base stock; antioxidants; Oxidation stability; Total acid number; Viscosity and Thiazolidinones | ||||
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