Thermal degradation of synthetic lubricants under oxidative pyrolytic conditions

Mascolo, G.; Rausa, R.; Bagnuolo, Giuseppe; Mininni, Giuseppe; Tinucci, L.

doi:10.1016/j.jaap.2005.05.005

Cited by 18 publications

(9 citation statements)

References 18 publications

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“…However, even this will not allow full control over the final amount of soot produced, which will vary from batch to batch. Laboratory techniques exist for ageing engine oils outside of an engine (without producing soot) [41]. This is quite an unpredictable process, however, and would add further complications to the process.…”

Section: Soot Simulantsmentioning

confidence: 99%

The effects of soot-contaminated engine oil on wear and friction: A review

Green

Lewis

2008

Proceedings of the Institution of Mechanical Engineers, Part D:

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During the diesel engine combustion process, soot particles are produced and are either exhausted into the atmosphere or absorbed by the engine's lubricant. Soot-contaminated lubricant has been shown to produce significant amounts of engine wear. The main mechanism of soot-related wear is through abrasion, but, at increased levels of soot content in the lubricant, starvation of the contact can occur, which can increase wear further. High concentrations of soot can increase the local acidic level and, around the piston where high temperatures and volatile gases coexist, corrosion may also occur. In this paper, the current understanding of engine wear due to soot contamination and the previous research performed is reviewed. The paper also discusses soot formation and its general effects within the engine (including friction and efficiency), as well as other issues including filtration or removal, effects on the lubricant, engine design and operation, and future industry targets and technologies related to soot contamination.

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Section: Soot Simulantsmentioning

confidence: 99%

The effects of soot-contaminated engine oil on wear and friction: A review

Green

Lewis

2008

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…Previous works reported that the combustion of used lube oils was detected to be coincident with 30 volatile and 170 semi-volatile compounds such as benzene, toluene, ethylbenzene, xylene (BTEX), and polycyclic aromatic hydrocarbons (PAHs) (Fuentes et al 2007;Mascolo et al 2006). Furthermore, metal elements that could not be destroyed by combustion were found.…”

Section: Introductionmentioning

confidence: 99%

Effect of co-contaminated soil mixtures as fixed/fluidized bed media on pollutants emission under thermal treatment

Samaksaman

Kuo

Peng

et al. 2015

Int. J. Environ. Sci. Technol.

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Thermal treatment of soil polluted by lube oil and heavy metals (cadmium, chromium, copper, and lead) was carried out by using a laboratory-scale incinerator. The effect of co-contaminated soil mixtures as fixed/fluidized bed media was studied with different ratios of sand bed amount to soil feeding. Additionally, the effect of soil moisture content on incineration system was further investigated. The reduction in air input altered the mode of fluidized bed to fixed bed which resulted in an increase in organic pollutants such as benzene, toluene, ethylbenzene, xylene, and polycyclic aromatic hydrocarbons. The combustion efficiency of fixed bed mode was observed to be relatively high at a lower ratio of sand bed amount to soil feeding, whereas high combustion efficiency was found in fluidized bed mode at a higher ratio of sand bed amount to soil feeding. Much higher concentration of organic pollutants in both gas phase and bottom ash is found under a higher soil moisture content. In addition, the increase in moisture content has resulted in an increase in lead, cadmium, and chromium in fly ash while copper was decreased. An important consideration is that the partitioning of heavy metals was randomly distributed in particle sizes of bottom ash. The highest concentration of heavy metals was deposited on fine-sized particle. The distribution of heavy metals in medium-sized and coarse-sized particles to form eutectic species might be produced by the soil-sand aggregation.

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“…In this work, we studied the antioxidant potentiality of two synthesized molecules -thiophosphorated and phosphorated compounds from hydrogenated cardanol which presented even better stability. The addition of specific amounts of synthesized compounds in NH10, NH20 and NH140 oils improves their thermal-oxidative stability by 5-15 o C. The occurrence of major thermal degradation events at higher temperatures (T max ) for additivated hydrogenated naphthenics oils (Mascolo et. al., 2005) retarding their thermal degradation process, is an excellent indication of the antioxidant properties of the thiophosphorated and phosphorated cardanol compounds (Haines, 1995).…”

Section: Discussionmentioning

confidence: 99%

Study of antioxidant property of a thiosphorated compound derived from cashew nut shell liquid in hydrogenated naphthenics oils

Lopes

Carneiro

Rios

et al. 2008

Braz. J. Chem. Eng.

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The present work shows the aspects related to the synthesis and thermogravimetric analysis of thiophosphorated and phosphorated compounds from hydrogenated cardanol. Studies on thermal-oxidative stability were investigated, using a classical thermoanalytical-thermogravimetric method (TG/DTG) in an air atmosphere. Its use as an antioxidant additive in hydrogenated naphthenic NH10, NH20 and NH140 oils was evaluated. The addition of 1.2% synthesized compounds to the oils has improved their thermal-oxidative stability by 5-15ºC. The occurrence of major thermal degradation events at higher temperatures (Tmax) in additivated oils is a good indication of the antioxidant properties of the thiophosphorated and phosphorated cardanol compounds antioxidant properties

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Thermal degradation of synthetic lubricants under oxidative pyrolytic conditions

Cited by 18 publications

References 18 publications

The effects of soot-contaminated engine oil on wear and friction: A review

The effects of soot-contaminated engine oil on wear and friction: A review

Effect of co-contaminated soil mixtures as fixed/fluidized bed media on pollutants emission under thermal treatment

Study of antioxidant property of a thiosphorated compound derived from cashew nut shell liquid in hydrogenated naphthenics oils

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