Monitoring of oxidation behavior in mineral base oil additized with biomass derived antioxidants using FT-IR spectroscopy

Ahmad, Imtiaz; Ullah, Jan; Ishaq, Muhammad; Khan, Hizbullah; Gul, Kashif; Siddiqui, Samina; Ahmad, Waqas

doi:10.1039/c5ra17753g

Cited by 9 publications

(6 citation statements)

References 35 publications

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“…Methods for potential real-time measurement of antioxidants, alkalinity or acidity have included various sensors [2,[12][13][14][15][16][17][18][19][20], terahertz time-domain spectroscopy [21], and Fourier-transform infrared spectroscopy (FT-IR) [1,[22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Absorption Wavebands for Discriminating Oxidation Time of Engine Oil as Detected by FT-IR Spectroscopy

et al. 2019

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Fourier Transform-Infrared (FT-IR) spectroscopy was used to analyze gasoline engine oil (SAE 5W20) samples that were exposed to seven different oxidation times (0 h, 24 h, 48 h, 72 h, 96 h, 120 h, and 144 h) to determine the best wavenumbers and wavenumber ranges for the discrimination of the oxidation times. The thermal oxidation process generated oil samples with varying total base number (TBN) levels. Each wavenumber (400–3900 cm−1) and wavenumber ranges identified from the literature and this study were statistically analyzed to determine which wavenumbers and wavenumber ranges could discriminate among all oxidation times. Linear regression was used with the best wavenumbers and wavenumber ranges to predict oxidation time.

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Section: Introductionmentioning

confidence: 99%

Absorption Wavebands for Discriminating Oxidation Time of Engine Oil as Detected by FT-IR Spectroscopy

et al. 2019

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“…Alternative methods of measuring oxidation resistance of engine oil have been studied as precursors to a real-time sensor system. These include custom sensors [11][12][13][14][15][16][17][18][19][20] and spectrometers [2,21,22]. Terahertz (THz; 100 GHz to 10 THz) is a more recent spectroscopy advancement that uses terahertz waves with amplitude measured in the time domain for the desired sample and an empty sample holder (reference).…”

Section: Of 10mentioning

confidence: 99%

Terahertz Time Domain Spectroscopy to Detect Different Oxidation Levels of Diesel Engine Oil

et al. 2019

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Diesel engine oil was subjected to thermal oxidization (TO) for six periods of time (0 h, 24 h, 48 h, 72 h, 96 h, and 120 h) and was subsequently characterized by terahertz time domain spectroscopy (THz-TDS). The THz refractive index generally increased with oxidation time. The measurement method illustrated the potential of THz-TDS when a fixed setup with a single cuvette is used. A future miniaturized setup installed in an engine would be an example of a fixed setup. For the refractive index, there were highly significant differences among the oxidation times across most of the 0.3–1.7 THz range.

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“…One of the main limitations of lubricant oils is their autoxidation with air, a reaction that is catalyzed by ion metals and is accelerated when oils are heated or exposed to light. − This reaction starts with the rupture of a carbon–hydrogen bond, creating free radicals of carbon and hydrogen. Then, the carbon radicals easily react with dissolved oxygen creating peroxy-radicals that later react with another hydrocarbon molecule, yielding another carbon radical and an oxidized molecule, and these hydrocarbon molecules may continue to oxidize through time. − To diminish autoxidation diverse nanomaterials such as extracts from rice husk and sawdust, zeolites, ZnO, and carbon nanostructures − have been studied.…”

Section: Introductionmentioning

confidence: 99%

Tuning Autoxidation and Friction of Mineral Oil by Fullerene Cluster Properties

Morelos-Gómez

Kondo²,

Omori³

et al. 2023

Ind. Eng. Chem. Res.

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Lubricant oils can autoxidize due to contact with air and can be accelerated by heat and catalyzed with metal ion impurities. Therefore, new antioxidant additives are needed. Carbon nanomaterials exhibit excellent thermal oxidation resistance and can act as additives for lubricant oils to extend their operational lifetime. In this work, we studied the autoxidation behavior of a mixture of C60/C70 clusters in mineral oil (MO) containing different amounts of toluene during mixing. The addition of toluene during mixing increased the ratio of C60/C70 and the cluster size. The oil-fullerene mixtures (MO/C60/70) were heated at 150 °C for 48 h under magnetic stirring. FTIR analysis and TGA showed that the initial oxidation rate and high thermal oxidation (ca. 375 °C) decreased with the addition of fullerenes. Ball on disk friction tests showed that fullerenes effectively reduced the friction coefficient, favored by smaller C60/70 clusters. The obtained results demonstrate that small fullerene clusters with high C70 content can be achieved without the addition of toluene in mineral oil and exhibit higher antioxidation, and lower friction coefficient. Thus, fullerenes could be of high interest as an additive for lubricant oils.

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Monitoring of oxidation behavior in mineral base oil additized with biomass derived antioxidants using FT-IR spectroscopy

Abstract: The antioxidant potential of methanolic extract of rice husk and sawdust in mineral base oil is investigated by FT-IR spectroscopy during oxidation at 100 and 200 °C. The Rice husk extract is found to be more efficient than saw dust extract.

Cited by 9 publications

References 35 publications

Absorption Wavebands for Discriminating Oxidation Time of Engine Oil as Detected by FT-IR Spectroscopy

Absorption Wavebands for Discriminating Oxidation Time of Engine Oil as Detected by FT-IR Spectroscopy

Terahertz Time Domain Spectroscopy to Detect Different Oxidation Levels of Diesel Engine Oil

Tuning Autoxidation and Friction of Mineral Oil by Fullerene Cluster Properties

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