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Effect of organophosphate antioxidant on the thermo-oxidative degradation of a mineral oil

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Abstract

This study shows the synthesis, characterization, and evaluation of the effect of organophosphate antioxidant on the thermo-oxidative degradation of a mineral oil. The organophosphate was synthesized by nucleophilic substitution (SN2) of hydrogenated cardanol. For this study, were employed thermogravimetry, derivative thermogravimetry, differential scanning calorimetry, and differential thermal analysis techniques. The results showed that organophosphate contributed for thermo-oxidative stability of mineral oil (initial decomposition temperature (IDT) mineral oil: 91.28 °C < IDT mineral oil + organophosphate (1%): 156.42 °C). The organophosphate obtained shows significant thermal stability when compared with other compound of the same class (diphenyl phosphate).

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Acknowledgements

The authors acknowledge Petróleo Brasileiro S.A. (PETROBRAS) and CNPq (Process number 472009/2007-9) for the financial support, the Organic and Inorganic Chemistry Department of Federal University of Ceará by chemical and thermal analyses, and the Northeastern Center of Application and Use of Nuclear Magnetic Resonance—CENAUREM/UFC by 1H, 13C, and 31P NMR.

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Authors and Affiliations

  1. Departamento de Química – Grupo de Inovações Tecnológicas e Especialidades Químicas - GRINTEQUI, Universidade Federal do Piauí, Campus Ministro Petrônio Portella, Teresina, PI, CEP 64.049-550, Brazil

    Maria Alexsandra de Sousa Rios

  2. Departamento de Química Orgânica e Inorgânica – Laboratório de Produtos e Tecnologia em Processos - LPT, Universidade Federal do Ceará, Campus do Pici, Bloco 935, Fortaleza, CE, CEP 60.455-760, Brazil

    Selma Elaine Mazzetto

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  1. Maria Alexsandra de Sousa Rios
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  2. Selma Elaine Mazzetto
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Correspondence to Maria Alexsandra de Sousa Rios.

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de Sousa Rios, M.A., Mazzetto, S.E. Effect of organophosphate antioxidant on the thermo-oxidative degradation of a mineral oil. J Therm Anal Calorim 111, 553–559 (2013). https://doi.org/10.1007/s10973-011-2160-y

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  • DOI: https://doi.org/10.1007/s10973-011-2160-y

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