Evaluation of antioxidant properties of a phosphorated cardanol compound on mineral oils (NH10 and NH20)

Rios, Maria Alexsandra de Sousa; Mazzetto, Selma Elaine; Carioca, José Osvaldo Beserra; Barros, Geovânio Lima

doi:10.1016/j.fuel.2007.01.034

Cited by 60 publications

(29 citation statements)

References 15 publications

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“…The stable behavior that phosphorus compounds show can be attributed to the high stability of the P-O-C bond [9,38]. Therefore, the obtained results suggest the possibility of application of these compounds as antioxidants for lubricant oils, once the degradation of these petrochemical products, in general, starts at 91 °C [4]. As the phosphate esters find use in a variety of commercial applications (lubricants, hydraulic fluids, polymers and others), and some of these systems may be contaminated by solids and/or metals, water, engine oils, solvents and oxygen; it is very important know their thermal behaviors, once that degradation can be a limiting factor of the application of these phosphorus compounds [39][40][41][42].…”

Section: Thermal and Oxidative Analyses Of Phosphorus Cardanolmentioning

confidence: 78%

“…After the reaction time, was obtained a viscous yellow oil [27]. After synthesis and purification, the alkyl phosphate was characterized using NMR 13C and 31P, TG-DTG and DSC [4,13,27,30]. …”

Section: Synthesis Of Phosphorus Cardanolmentioning

confidence: 99%

“…Cashew Nut Shell Liquid (CNSL) and its derivatives are an important group of molecules, which play a fundamental role in organic chemistry [1][2][3][4]. They have potent antioxidant activity in several industrial areas such as: fuels and biofuels; tribology; polymers [5,6]; rubbers [7][8][9][10] and can be used in the biological industry too as antibacterial, anti-fungal and anti-tumor [11,12].…”

Section: Introductionmentioning

confidence: 99%

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Phosphorus cardanol: chemical characterization and thermal stability

et al. 2016

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Devido à grande utilização do cardanol para o desenvolvimento de novos aditivos, o presente trabalho tem como objetivos apresentar a caracterização química do fósforo cardanol, a qual foi verificada utilizando-se FTIR e técnicas termoanalíticas (TG/DSC/DTA) e, a avaliação antioxidante do composto em um óleo lubrificante de base naftênica. Neste trabalho, os autores incluíram também o estudo térmico do fósforo cardanol por aquecimento em estufa, com monitoramento das alterações em FTIR. De acordo com os resultados, o fósforo cardanol apresentou boa estabilidade térmica quando comparado a outros ésteres de fosfato de mesma classe e, não apresentou alterações antes e após aquecimento a 120 ° C, sob atmosfera de ar. Desta forma, o composto de fósforo obtido a partir do cardanol apresenta potencial de aplicação, como aditivo, em óleos lubrificantes e produtos petroquímicos do mesmo segmento. Palavras-chave: LCC, oxidação, estabilidade térmicaDue to the wide use of the cardanol to develop new additives, this study presents the chemical characterization of phosphorus cardanol using FTIR and Thermoanalytical techniques (TG / DSC / DTA), and the evaluation of the antioxidant potentiality of compound when added to a lubricating oil. In this paper, the authors also included the thermal study of phosphorus cardanol by heating in an oven, monitoring changes in FTIR. According to results, the phosphorus cardanol showed good thermal stability when compared with other compounds of the same class "phosphate esters" and showed no changes before and after heating at 120 ° C, under air atmosphere. Thus, the phosphorus compound derived from cardanol has potential application as additive for lubricating oils and petrochemicals of the same segment.

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Section: Thermal and Oxidative Analyses Of Phosphorus Cardanolmentioning

confidence: 78%

Section: Synthesis Of Phosphorus Cardanolmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Phosphorus cardanol: chemical characterization and thermal stability

et al. 2016

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“…They have the capacity to process up to 360 tons of brown, 70,000 tons of almonds and 45,000 tons of CNSL per year . CNSL is a product considered as having very low value (Rios Façanha et al, 2007). It is purchased for oil processing and then resold at high prices, because of its widespread use in the production of resins and polymers as in the USA and India.…”

Section: Other Features and Processingmentioning

confidence: 99%

Pharmacological properties of cashew (Anacardium occidentale)

Leite¹,

Islam²,

Junior³

et al. 2016

Afr. J. Biotechnol.

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Anacardium occidentale L. is a tree native to Brazil, which is rich in phenolic lipids. Nowadays, the cashew bark (Cashew Nut Shell Liquid) has received great attention in the pharmaceutical industry, due to its economy, abundance and important chemical compounds. Net of cashew nut shell is classified according to the method of production of: (1) net of the shell of natural cashew nut (60-65% anacardic acid; 15-20% cardol and 10% of cardanol) and (2) liquid from the technical cashew nut shell (60-65% of cardanol, 15-20% cardol and 10% of polymeric material). This work aims to report the pharmacological properties of liquids from cashew nut shells. Results suggest that both liquids have antifungal, antibacterial, antiparasitic, anti-tumor, antiulcerogenic, molluscicides, antimutagenic and antioxidant activities. Natural cashew nut liquid is non-genotoxic, whereas technical liquid is genotoxic in prokaryotes and eukaryotes, although there is no evidence of their mutagenic effects on eukaryotic cells. In conclusion, the excellent antioxidant and non-mutagenic activities of cashew nut shell liquid (CNSL) provide opportunities for CNSL in the cosmetic and/or pharmaceutical industries, but continuous study is needed to allow safe and efficacious preparations.

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“…In addition to cardanol, CNSL obtained by these extraction techniques also consists of cardol and other polymeric material [19]. Some studies have reported distillation or pyrolysis of CNSL as additional processing strategies to increase the yield of cardanol and remove other polymeric and contaminated material [20,21]. Of course, the phenolic material, cardanol, forms the major constituent of CNSL and materializes as pertinent fuel candidate for diesel engine application.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and utilization of catalytically cracked cashew nut shell liquid in a diesel engine

Vedharaj

Vallinayagam

Yang

et al. 2016

Experimental Thermal and Fluid Science

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In this study, CNSL (Cashew nut shell liquid), an economically viable feedstock among the other contemporary resources, has been considered as an appropriate source of alternate fuel.Herein, CNSL was extracted from cashew nut outer shell, a waste product, through a unique approach of steam treatment process followed by mechanical crushing technique. In contrast to the past studies that have attempted to use unprocessed CNSL directly as substitute for diesel, this study has resorted to use processed CNSL by cracking it using zeolite catalyst. Thus, both the extraction of CNSL from cashew nut outer shell and processing of it through catalytic cracking process to help synthesize CC-CNSL (catalytically cracked CNSL) are different, which underscores the significance of the current work. In wake of adopting such distinct methodologies with fuel characterization, the properties of CC-CNSL such as viscosity and calorific value were figured out to be improved. Subsequently, CC-CNSL20 (20% CC-CNSL and 80% diesel) was tested at different fuel injection pressure such as 200 bar, 235 bar, 270 bar and 300 bar so as to optimize its use in a single cylinder diesel engine. From the engine experimental study, CC-CNSL20 was found to evince better engine performance than diesel and the composite emissions of CO (carbon monoxide), HC (hydrocarbon), NO X (oxides of nitrogen) and smoke, computed based on ISO 8178 D2 standard test cycle, were found to be better than diesel and incompliance with the legislative norms for genset.

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Evaluation of antioxidant properties of a phosphorated cardanol compound on mineral oils (NH10 and NH20)

Cited by 60 publications

References 15 publications

Phosphorus cardanol: chemical characterization and thermal stability

Phosphorus cardanol: chemical characterization and thermal stability

Pharmacological properties of cashew (Anacardium occidentale)

Synthesis and utilization of catalytically cracked cashew nut shell liquid in a diesel engine

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