The direct synthesis of a bio-lubricant by the oligomerization of methyllinoleate <i>via</i> castor oil

Xue, Wenjie; Shi, Lei; Chen, Xinqing; Qiu, Minghuang; Zhou, Cunhui; Liu, Honglei; Li, Shenggang; Sun, Yuhan

doi:10.1039/c9gc03257f

Cited by 10 publications

(5 citation statements)

References 39 publications

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“…Original descriptions of materials and methods have already been provided in patent literature. 13,15 In this section, they are summarized only briey. Most investigated dibasic esters are itemized there also along with their spectral data.…”

Section: Methodsmentioning

confidence: 99%

Conversion of fatty acid methyl esters into dibasic esters by metathesis and their lubricant properties

et al. 2021

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Section: Methodsmentioning

confidence: 99%

Conversion of fatty acid methyl esters into dibasic esters by metathesis and their lubricant properties

et al. 2021

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“…It was found that the pour point of the prepared oligomers was significantly decreased compared with that of castor oil. The low‐temperature fluidity was also better compared with mineral oil 103 …”

Section: Chemical Modifications In Vegetable Oilsmentioning

confidence: 99%

“…The low-temperature fluidity was also better compared with mineral oil. 103 All of the above chemical modifications were performed to enhance the lubrication properties of vegetable (or animal) oil. These alone or in combination make the oil/fatty acid a better lubricant.…”

Section: Dimerization/oligomerizationmentioning

confidence: 99%

Synthesis of environment‐friendly, sustainable, and nontoxic bio‐lubricants: A critical review of advances and a path forward

Sancheti

Yadav

2022

Biofuels Bioprod Bioref

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Carbon neutral biosources are sought for the protection of the environment and to meet the energy needs of the growing population. For instance, lubricants are required in huge quantities. Synthesis of environment-friendly, sustainable and non-toxic bio-lubricants from renewable and bio-degradable feedstocks such as vegetable oils and animal fats will be most desirable. The thermal stability and lower volatility of these triglycerides make them suitable as precursors for lubricants. This review briefly covers the chemical modifications required to transform plant-and animal-based triglycerides into efficient biolubricants. Chemical modifications are required to improve one or more physicochemical or tribological properties of bio-lubricants such as low-temperature flow properties or the oxidation stability of fatty acids/oils for different applications. The use of heterogeneous catalysts makes the processes clean. The relationship between their molecular structures, physicochemical properties and lubrication performance is reviewed. Additives such as antioxidants, sulfides, phosphates, metal and metal oxide nanoparticles, and ionic liquids are used to enhance the lubricant properties. With proper modifications in a base oil, support and additives, bio-lubricants can perform similar to or even better than conventional lubricants. A further advantage is that they can be easily adapted using existing infrastructure and lubricant formulations.

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“…Especially, the BA1 compound shows excellent antioxidant properties and thermo-oxidative stability in dipentaerythritol ester, which is attributed mainly to the intramolecular hydrogen transfer from Ar-OH to N-H in the diphenylamine group and Ar-OH regeneration through intramolecular hydrogen bonds, and a corresponding mechanism is shown in Figure 18 [131]. The base oils mainly include mineral oils [132], synthetic oils such as poly-α-olefin [133], synthetic ester oils [134], and bio-based greases [135]. Among them, bio-based grease is more environmentally friendly and energy-saving compared to other base oils.…”

Section: Phenolic Amine Complex and Its Derivativesmentioning

confidence: 99%

Research Progress of Antioxidant Additives for Lubricating Oils

Xia,

Wang,

Liu

et al. 2024

Lubricants

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Lubricating oils play an important role in friction-reducing and anti-wear, as well as enhancing mechanical efficiency. To improve the oxidation stability and service life of lubricating oils, the composition and structure of antioxidants should be strategically designed, and these parameters have significantly affected the performance of antioxidants in lubricating oils. Antioxidants are classified into two types based on the substrates they act on: peroxide decomposers and radical scavengers. In this review, the effects of peroxide decomposers (including sulfur compounds, phosphorus compounds, sulfur–phosphorus compounds, and sulfur–nitrogen compounds) and radical scavengers, such as hindered phenols and aromatic amines, have been discussed as additives in the antioxidant properties of lubricating oils. The results indicate that peroxide decomposers have excellent performances in lubricating oils, but high pollution of S and P is not conducive to their widespread use. On the contrary, radical scavengers also have superior antioxidant properties and no pollution, possessing the potential to replace traditional antioxidants. In addition, molecular structures with (multiple) synergistic antioxidant properties have been extensively designed and reported. This review serves as a reference for researchers to design and develop high-end new antioxidants.

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The direct synthesis of a bio-lubricant by the oligomerization of methyllinoleate via castor oil

Abstract: A non-noble metal (Mo) catalyst for the oligomerization of methyllinoleate via castor oil was successfully prepared to directly synthesize bio-lubricatant oil. The obtained oligomers were produced at a maximum yield of 70.8%.

Cited by 10 publications

References 39 publications

Conversion of fatty acid methyl esters into dibasic esters by metathesis and their lubricant properties

Conversion of fatty acid methyl esters into dibasic esters by metathesis and their lubricant properties

Synthesis of environment‐friendly, sustainable, and nontoxic bio‐lubricants: A critical review of advances and a path forward

Research Progress of Antioxidant Additives for Lubricating Oils

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