Quantitative determination of corrosion inhibitors in middle distillate jet fuels by gel permeation chromatography

Hardy, Dennis R.; Black, Bruce H.; Wechter, Margaret A.

doi:10.1016/s0021-9673(01)93483-1

Cited by 12 publications

(7 citation statements)

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“…The extraction of acidic components in each sample was carried out by a modified method for jet fuels described by Black et al (Black et al, 1988 andHardy et al, 1986). The steps for this extraction are depicted in Figure 1.…”

Section: Extraction Proceduresmentioning

confidence: 99%

Base Extraction to Remove the Components Contributing to Lubricity in a Middle Distillate Fuel

Hughes¹,

Mushrush

Hardy

2002

Petroleum Science and Technology

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With increased environmental demands for cleaner burning fuels, the use of severe hydrotreating has become commonplace in many of the world's refineries. In order to reduce sulfur and aromatic levels, this hydrotreating has brought about the removal of surface-active species that afford a fuel its inherent lubricity. The result is excessive wear of engine component parts that rely of this lubricity. For over 10 years, the American Society for Testing and Materials (ASTM) has been working on establishing methods to adequately assess

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Section: Extraction Proceduresmentioning

confidence: 99%

Base Extraction to Remove the Components Contributing to Lubricity in a Middle Distillate Fuel

Hughes¹,

Mushrush

Hardy

2002

Petroleum Science and Technology

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“…Several methods exist for removing polar constituents from fuels prior to analysis, including those based on liquid−liquid extraction using a basic solution (NaOH in methanol/water) ,, and others based on adsorption mechanisms (HPLC fractionation). , The basic extraction method relies on the ability of the proton from the acid groups or slightly acidic phenolic species to be removed, thus creating a charged species that becomes more soluble in the aqueous extractant solution. Upon extraction, the method involves reacidifying the species to allow it to be back-extracted with methylene chloride.…”

Section: Introductionmentioning

confidence: 99%

“…Upon extraction, the method involves reacidifying the species to allow it to be back-extracted with methylene chloride. While the presence of methanol has been shown to enhance the efficiency of extraction, ,, the basic extraction method has shortcomings because of the difficulty in completely recovering certain oxygenates, particularly hindered phenols.…”

Section: Introductionmentioning

confidence: 99%

Extraction, Separation, and Identification of Polar Oxygen Species in Jet Fuel

et al. 2005

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Polar species in jet fuel, such as phenols, may be responsible for a number of performance characteristics of the fuel. However, because they are present at trace levels in fuels, the isolation and detection of these species is difficult. This work describes the development of a simple extraction method using methanol to remove polar phenolic components from petroleum-derived fuels. The method uses the affinity for polar components in the fuel, such as phenols, to partition into methanol, facilitating their removal by typical liquid-liquid extraction protocols. The method is amenable to large fuel sample volumes, thus minimizing limitations encountered with trace oxygenate concentrations, and has proven to be efficient for the removal of many oxygen-containing compounds, including alcohols, carboxylic acids, and phenols from fuel matrixes. The method has been successfully applied to a variety of phenols and appears to be less susceptible to the environment around the -OH group than other extraction methods. Moderate amounts of alkanes and aromatics are also removed using this extraction method, which may present problems when using certain detection schemes. An adsorption technique based on HPLC with a silica column was developed to further separate the extract into one fraction containing alkanes and aromatics and another fraction containing polar species including phenols. The effectiveness of the methanol extraction and HPLC fractionation method was illustrated by data from spiking studies, which show the removal of oxygenates, even hindered phenols, from spiked solvents, from spiked fuels, and from spiked petroleum-derived fuels (JP-8). The method was used to isolate and identify several phenolic species in petroleum-derived jet fuels.

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“…Турбинное масло попадает в систему очистки газа через уплотнители нагнетателей газоперекачивающих агрегатов, использующих систему уплотнения «масло-газ». Для изучения устойчивости турбинного масла в процессе эксплуатации применяются методы ИК-спектрометрии с Фурье преобразованием [7,8] и ВЭЖХ [9][10][11][12]. Все они, в основном, базируются на определении присадок, устойчивых в процессе эксплуатации масел.…”

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Analytical control of silicagel adsorbent contamination by the turbine oil components in the process of purifying natural gas

Ivanova¹,

Темердашев²,

Kolychev³

et al. 2020

АиК

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Аналитика и контроль. 2020. Т. 24. № 3. flow of hexane with the subsequent determination of their presence by the sulfuric acid : formalin developer. The determination of additives in the adsorbent samples was carried out by the method of reverse phase high performance liquid chromatography according to the technique that included two-stage extraction of analytes with the hexane and acetone solutions, their re-dissolution in acetonitrile, and the ensuing analysis. The highest content of turbine oil was observed in the upper and middle layers of the modified silica gel. The conditions for the extraction of turbine oil components from the spent adsorbent have been optimized. Various extractants and their volumes for the greatest extraction of turbine oil components from the adsorbent were studied. The stability of turbine oil additives on the modified silica gel was studied during its high-temperature regeneration by modeling the adsorbent regeneration process under the conditions close to production. It is shown that some components of turbine oil were resistant to the regeneration. For example, additives D-157 and V-15/41, the concentrations of which were comparable before and after the regeneration. The proposed analytical scheme for determining the components of turbine oil on the real adsorbent sample was tested. When determining the thermally stable components on the spent modified alumina silica gel, the mass of turbine oil accumulated in the adsorbent over the entire service life was calculated and amounted to 9.5 g per 1 kg of adsorbent.

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Quantitative determination of corrosion inhibitors in middle distillate jet fuels by gel permeation chromatography

Cited by 12 publications

References 0 publications

Base Extraction to Remove the Components Contributing to Lubricity in a Middle Distillate Fuel

Base Extraction to Remove the Components Contributing to Lubricity in a Middle Distillate Fuel

Extraction, Separation, and Identification of Polar Oxygen Species in Jet Fuel

Analytical control of silicagel adsorbent contamination by the turbine oil components in the process of purifying natural gas

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