Study of a novel phenolic-ester as antioxidant additive in lube, biodiesel and blended diesel

Singh, Rajesh Kumar; Kukrety, Aruna; Sharma, O. P.; Baranwal, Siddharth; Atray, Neeraj; Ray, Siddharth S.

doi:10.1016/j.jiec.2016.03.029

Cited by 22 publications

(17 citation statements)

References 11 publications

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“…As shown in Table 1, according to the solvent extraction methods, the spectra collected by FT-IR were differed from each other. For example, the 1295-1232 cm -1 region corresponding to O-C-H bending of phenolic compounds (Lu et al, 2011;Singh et al, 2016) were obtained from all extracts except water extracts of red lentil and dry bean. It was noteworthy that the region between 1563 and 1551 cm -1 which was corresponding to amide II C-N and N-H stretching of proteins were found in water extracts of legumes.…”

Section: Ft-ir Characterization Of Legume Extractsmentioning

confidence: 99%

Ft-Ir Spectroscopy Characterization and Chemometric Evaluation of Legumes Extracted With Different Solvents

Dıblan¹,

Kadiroğlu²,

Aydemir³

2018

Food Health

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In this study, FT-IR spectroscopy was applied for rapid characterization and discrimination of commonly consumed legumes extracted by different solvents in combination with principal component analysis (PCA) for the first time. Dried soy bean, white bean, chickpea, red lentil, and pinto bean were extracted by water (W), ethanol (E), acetone/water (AW) and acetone/water/acetic acid (AA). The effect of each solvent on different legume extracts was demonstrated by identifying the functional groups using FT-IR spectroscopy at mid-infrared (mid-IR) range (4000-650 cm -1 ) and associated with the amount of total phenolics and other oxidation substrates in the extracts determined by Folin-Ciocalteu method. PCA models with 2 principal components were constructed to discriminate the different legume extracts based on FT-IR spectra and total phenolic content (TPC). FT-IR spectra of each legume were quite different for different solvents but almost the same for the same solvent. Each legume extracts had significantly different TPC from each other extracted with the same or different solvents. The highest TPC was obtained by soybeans and pinto beans extracted with W or E and AW or AA, respectively. PCA analysis of FT-IR spectra and TPC provided clear discrimination between the legume samples extracted with different solvents.

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Section: Ft-ir Characterization Of Legume Extractsmentioning

confidence: 99%

Ft-Ir Spectroscopy Characterization and Chemometric Evaluation of Legumes Extracted With Different Solvents

Dıblan¹,

Kadiroğlu²,

Aydemir³

2018

Food Health

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“…Oxidation stability considers as one of the most important parameters of lubricating oil to evaluate the service life in high temperature and extreme applications. [8][9][10] There are some commonly used methods to evaluate the oxidation stability of lubricating oil, such as rotary bomb oxidation test (RBOT, ASTM D2272), 11,12 oxidation stability test (ASTM D943), 13 FTM 791-3462 coking test, differential scanning calorimetery (DSC)/ PDSC (ASTM E 2009-02), 14 and so forth. Santos et al 15 studied thermal oxidation stability of synthetic oils which aging at different temperature and time with TG and DSC.…”

Section: Introductionmentioning

confidence: 99%

Study on comprehensive degradation stability of special and nonspecific motor oils

Wei

Chen

Sun

et al. 2020

Lubrication Science

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In order to study the degradation characteristics of special and nonspecific motor oil, two experimental vehicles carried out eight road tests with four types of oils, which two types of oils were special oils for its engines recommended by OEM (original equipment manufacturer) and the other two types of nonspecific oil were bought from market. Total acid number, oxidation stability, oxidation, nitration and sulfation values of experimental oils were analysed. The interpolation method and Euclidean distance were used to evaluate the similarity of change curves of oil properties. The results show that the oxidation onset temperature had good similarity both in special oils and nonspecific oils. The sulfation value of nonspecific oils had highest change rate of Euclidean distance. The change rate of Euclidean distance of two special oils were less than 8.48%, which had more stability than that of the nonspecific oils. This work can serve as a reference for end users to select motor oils and oil developers to improve the oil stability.

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“…The oxidation stability is consequently one of the most important parameters responsible for the ageing of lubricants. 9,10…”

Section: Introductionmentioning

confidence: 99%

New Approach for Understanding the Oxidation Stability of Neopolyol Ester Lubricants Using a Small-Scale Oxidation Test Method

et al. 2018

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This work presents, for the first time, the evaluation on the oxidation stability of synthetic oils for an aircraft engine using the rapid small-scale oxidation test (RSSOT) method. Polyol ester lubricants with and without additives were oxidized at 423 K and 7 bar. The pressure drop plots show that during the first period of thermal degradation, the consumption of oxygen is similar for both samples. This part corresponds to the initiation steps of the mechanism of oxidation. Then, the curve of the oil without additives reveals an increase in the depletion of oxygen, corresponding to the kinetic propagation step. Because of the presence of antioxidants, this phase is not observed for oil-containing additives. The RSSOT method also allows us to quantify the time needed for the ester base to produce enough free radicals in order to propagate the mechanism of oxidation. A methodic comparison with other samples containing the raw oil and one additive is also proposed.

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Study of a novel phenolic-ester as antioxidant additive in lube, biodiesel and blended diesel

Cited by 22 publications

References 11 publications

Ft-Ir Spectroscopy Characterization and Chemometric Evaluation of Legumes Extracted With Different Solvents

Ft-Ir Spectroscopy Characterization and Chemometric Evaluation of Legumes Extracted With Different Solvents

Study on comprehensive degradation stability of special and nonspecific motor oils

New Approach for Understanding the Oxidation Stability of Neopolyol Ester Lubricants Using a Small-Scale Oxidation Test Method

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