Stability Studies of a Jet Fuel Containing No Organo- Sulfur Compounds

Mushrush, George W.; Beal, Erna J.; Hughes, Janet; Bonde, Steven E.; Gore, W.; Dolbear, Geoffrey E.

doi:10.1081/lft-120003580

Cited by 6 publications

(5 citation statements)

References 8 publications

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“…The stability of the resultant free-radical formed is also important. In the literature there exist numerous articles about hydro peroxide formation [29][30][31][32][33][34].…”

Section: The Radicals Consideredmentioning

confidence: 99%

DFT Treatment of Some Cantharidine Isomers and Some Radicals from Them

Türker

2023

EJCS

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Cantharidine (cantharidin) has been used as a medicine for centuries for many purposes. It is also known for its anticancer properties. In the present study, some cantharidine isomers and some radicals from them are considered within the realm of density functional theory. The isomers have been subjected to B3LYP/6-311++G(d,p) level of theory and the radicals from them are treated at the level of UB3LYP/6-31+G(d) level. The isomers considered are stereoisomers having the methyl groups at different stereo orientation. The calculations have revealed that the isomers are all thermally favorable and electronically stable. In each case, the mono radical formed from the isomer considered by the homolytic cleavage of C-H bond at the α-position of the etheric oxygen atom. These radicals are also thermally favorable and electronically stable. Various calculated properties of the isomers and the radicals have been harvested and discussed.

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“…The stability of the resultant free-radical formed is also important. In the literature there exist numerous articles about hydro peroxide formation [29][30][31][32][33][34].…”

Section: The Radicals Consideredmentioning

confidence: 99%

DFT Treatment of Some Cantharidine Isomers and Some Radicals from Them

Türker

2023

EJCS

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“…Thus, any proposed additive to Jet-A, JP5, or JP8 has to be approached with these two conditions in mind. Extensive research has also shown that heteroatomic molecules and certain functional groups are deleterious and increase the rate at which these degradation reactions occur (Mushrush et al, 1991;Mushrush et al, 2002). Thus, the chemical composition of the additives to the jet fuel must be considered as well.…”

Section: Introductionmentioning

confidence: 98%

“…As a part of the Naval Research Laboratory's initiative to develop fire-safe fuels, a series of additives are being proposed based on the chemistry of the jet fuel. Previous reports have shown that molecular degradation reactions in fuel cause fuel instability, which is defined in terms of solids formation (Watkins et al, 1989;Mushrush et al, 1991;Mushrush, 1992;Mushrush et al, 2002). These solids can plug injectors or nozzles and cause overall reduction in aircraft performance.…”

Section: Introductionmentioning

confidence: 99%

The Construction of an Improved Automated Atomizer for Evaluating Jet Fuel Flammability

Willauer

Hoover

Williams

et al. 2005

Petroleum Science and Technology

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“…The resulting uptake of oxygen and reaction with fuel components lead to products of higher polarity with the ultimate consequence of sediment formation . On the other hand, there are fossil fuels that, without any biocomponents present, tend to demonstrate instability by forming sediments as well . A reaction that leads to sediments through a coupling reaction between naturally occurring phenols from the fossil fuel with indoles and carbazoles has been proposed for jet fuels, although products from such a reaction were not identified .…”

Section: Introductionmentioning

confidence: 99%

“…2 On the other hand, there are fossil fuels that, without any biocomponents present, tend to demonstrate instability by forming sediments as well. 3 A reaction that leads to sediments through a coupling reaction between naturally occurring phenols from the fossil fuel with indoles and carbazoles has been proposed for jet fuels, although products from such a reaction were not identified. 4 The resulting sediments can plug filters and nozzles in heating systems and cause large operability losses.…”

Section: Introductionmentioning

confidence: 99%

Influence of Phenols on the Oxidation Stability of Home Heating Oils/FAME Blends

2015

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The formation of deposits in fossil and biogenic home heating oils as well as in their blends is well-known. As a result, sediments can plug filters and nozzles in heating systems and thus cause operability problems. Different kinds of compounds are presumed to be involved in these processes. It is well-known that phenols play an important part but, on the other hand, phenols are also known to act as antioxidants that delay the oxidation of fuel compounds, and thus the formation of reactive products. To study the antioxidant effect of different phenols, model fuels (biogenic, fossil and a 10% v/v blend) were doped with several representatives of this class of compounds. The samples were artificially aged using the PetroOXY (DIN EN 16091) method. The induction time was recorded and gave information on the impact of the tested substance on the model fuel. Infrared spectrometry was used to investigate the oxidation products. Furthermore, the phenols of a commercial heating oil were extracted and then the oil was aged to test the influence of phenols in real samples. All the tested phenols, both synthetic and naturally occurring (biogenic and fossil), increased the induction time of artificial model fuels and commercial heating oil. In each model fuel, a different phenol showed the largest influence on the stability whereas phenols alkylated in both the ortho and the para positions generally showed the largest beneficial effects.

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Stability Studies of a Jet Fuel Containing No Organo- Sulfur Compounds

Cited by 6 publications

References 8 publications

DFT Treatment of Some Cantharidine Isomers and Some Radicals from Them

DFT Treatment of Some Cantharidine Isomers and Some Radicals from Them

The Construction of an Improved Automated Atomizer for Evaluating Jet Fuel Flammability

Influence of Phenols on the Oxidation Stability of Home Heating Oils/FAME Blends

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