Rapid Quantitative Determination of Aromatic Groups in Lubricant Oils Using Gel Permeation Chromatography

Varotsis, Nikos; Pasadakis, Nikos

doi:10.1021/ie970463m

Cited by 11 publications

(7 citation statements)

References 7 publications

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“…Figure 2B presents the percentage of different fractions of the FF unit samples. As expected, in Figure 2B, the aromatic extract contains a higher content of aromatics and polar compounds (3,4, and 5+ polars rings) than DAO 2 and raffinate 1. The aromatic extract also exhibits an important decrease in the proportion of saturate compounds compared to DAO 2.…”

Section: Hplc3 Resultssupporting

confidence: 83%

Chemical Characterization Using Different Analytical Techniques to Understand Processes: The Case of the Paraffinic Base Oil Production Line

et al. 2020

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Mineral base oils are used to produce commercial lubricants and are obtained from refining vacuum residue. Lubricants are used to reduce friction in industry devices, so their viscosity is a key characteristic that needs to be optimized throughout the process. The purpose of this study is to show how global chemical characterization of samples from the base oil production chain can facilitate a better understanding of the molecular impacts of processing and their effect on macroscopic properties like viscosity. Eight different samples were characterized by different analytical techniques, including liquid chromatography and mass spectrometry techniques, to understand their chemical evolution through the different process units at the molecular level. Furthermore, a statistical treatment allowed for the identification of parameters that influence viscosity, mainly sulfur and polyaromatics content. This study demonstrates the importance and effectiveness of cross-checking results from different complementary analytical techniques to acquire valuable data on lubricating oil base samples.

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Section: Hplc3 Resultssupporting

confidence: 83%

Chemical Characterization Using Different Analytical Techniques to Understand Processes: The Case of the Paraffinic Base Oil Production Line

et al. 2020

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“…Routine tests of oil fractions need quick and cheap analysis methods considering that mass spectrometry is, however, used only for research applications [23]. Ultraviolet spectroscopy is a low cost technique used for monitoring some properties of petroleum products such as the aromatics content in some petroleum fractions [24]. These types of applications based on the strong absorption of ultraviolet radiation by aromatic compounds due to the occurrence of conjugated electrons their structure [25].…”

Section: Ultraviolet Analysis For Crude Oil Fractionsmentioning

confidence: 99%

Classification of Crude Oils and its Fractions on the Basis of Paraffinic, Naphthenic and Aromatics

Al-Dahhan¹,

Mahmood²

2019

ANJS

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The ratios of crude oils hydrocarbons vary according to its origin. Two types of crude oil (A&B) were selected from Dura refinery which was extracted from Basra oil fields. These samples were tested according to physical properties: density, Specific gravity, API gravity, Pour Point, Kw factor and Correlation Index. Results show that crude oil (A) heavier than (B) due to higher density; pour point and lowers (API). Crude oil (A) shows it has more aromatic compounds than the crude oil (B) according to its higher (Kw) and lower (CI) values or (B) contain more paraffinic compounds than (A) for the same reasons. Atmospheric distillation process was done according to ASTM 2892 method for the two selected crude oils. Fractions obtains were tested according to physical properties: density, Aniline Point, API gravity, Kw factor and Correlation Index. The nature of the ingredients for petroleum fractions derived from distillation of the crude oil samples can be classified on the basis of the Paraffinic, naphthenic or aromatic content, depending on the results obtained from distillation which confirm the findings stated above for crude oil. Fourier Transform Infrared Analysis was carried out for crude oils atmospheric fractions to identify the components in terms of being paraffinic, naphthenic or aromatics. Results refers to the same ingredients for crude oil B for the paraffinic and naphthenic components as in crude oil A but the main difference here is the disappearance of the bands for aromatics C-H stretching occur above 3000 cm-1 for crude oil B which refers that this crude has less aromatic compounds than crude oil A. These results have been confirmed through ultraviolet tests.

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“…Stationary-phase-induced effects on protein conformation were monitored by changes in the maximum-to-minimum ratio of the second-derivative spectrum. Moreover, a rapid quantitative determination of aromatic groups in lubricant oils by SEC combined with PDA detection was described by Varotsis and Pasadakis [143]. Dupont [140] studied degradation of gelatin in paper upon aging by means of aqueous SEC and UV-PDA detection.…”

Section: Detectorsmentioning

confidence: 99%

Chapter 5 Size-exclusion chromatography

Silberring¹,

Kowalczuk²,

Bergquist³

et al. 2004

Journal of Chromatography Library

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Rapid Quantitative Determination of Aromatic Groups in Lubricant Oils Using Gel Permeation Chromatography

Cited by 11 publications

References 7 publications

Chemical Characterization Using Different Analytical Techniques to Understand Processes: The Case of the Paraffinic Base Oil Production Line

Chemical Characterization Using Different Analytical Techniques to Understand Processes: The Case of the Paraffinic Base Oil Production Line

Classification of Crude Oils and its Fractions on the Basis of Paraffinic, Naphthenic and Aromatics

Chapter 5 Size-exclusion chromatography

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