Inverse micelles and solubilization of proton donors in hydrocarbon formulations

Fox, Miles; Pawlak, Zenon; Picken, D.J.

doi:10.1016/0301-679x(91)90004-s

Cited by 8 publications

(1 citation statement)

References 58 publications

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“…The synthesis route of ZDDP is shown in Figure 4, where dialkyl dithiophosphoric acids, which are prepared by P 2 S 5 react with alcohols, are combined with ZnO to synthesize ZDDP-1 or ZDDP-2 [4,49]. ZDDP-1 can form chelate ZDDP-2 with cage-like structures, and ZDDP-1 is generally in equilibrium with ZDDP-2 in lubricating oils [49,50]. To further improve the performance of ZDDP, the route for synthesizing ZDDP has been optimized by researchers.…”

Section: Sulfur-phosphorus Compoundsmentioning

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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Section: Sulfur-phosphorus Compoundsmentioning

confidence: 99%

Research Progress of Antioxidant Additives for Lubricating Oils

Xia,

Wang,

Liu

et al. 2024

Lubricants

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A review of current understanding in tribochemical reactions involving lubricant additives

2022

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Lubricants have played important roles in friction and wear reduction and increasing efficiency of mechanical systems. To optimize tribological performance, chemical reactions between a lubricant and a substrate must be designed strategically. Tribochemical reactions are chemical reactions enabled or accelerated by mechanical stimuli. Tribochemically activated lubricant additives play important roles in these reactions. In this review, current understanding in mechanisms of chemical reactions under shear has been discussed. Additives such as oil-soluble organics, ionic liquids (ILs), and nanoparticles (NPs) were analyzed in relation to the tribochemical reaction routes with elements in metallic substrates. The results indicated that phosphorus, sulfur, fluorine, and nitrogen are key elements for tribochemical reactions. The resulting tribofilms from zinc dithiophosphates (ZDDP) and molybdenum dithiocarbamate (MoDTC) have been widely reported, yet that from ILs and NPs need to investigate further. This review serves as a reference for researchers to design and optimize new lubricants.

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Effect of surfactants on the properties of hydrotalcites prepared by the reverse micelle method

Holgado

Román

et al. 2015

Materials Chemistry and Physics

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Inverse micelles and solubilization of proton donors in hydrocarbon formulations

Cited by 8 publications

References 58 publications

Research Progress of Antioxidant Additives for Lubricating Oils

Research Progress of Antioxidant Additives for Lubricating Oils

A review of current understanding in tribochemical reactions involving lubricant additives

Effect of surfactants on the properties of hydrotalcites prepared by the reverse micelle method

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