2021
DOI: 10.1016/j.cis.2020.102314
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Toward molecular characterization of asphaltene from different origins under different conditions by means of FT-IR spectroscopy

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Cited by 76 publications
(32 citation statements)
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“…Comparing the infrared spectra before and after the oxidation reaction, it can be seen that the peak near 1711 cm −1 was significantly enhanced, assigned to the carboxyl group (C=O) characteristic absorption peak [ 20 ]. The peak near 1213 cm −1 was also significantly enhanced, corresponding to phenolic hydroxyl or tertiary alcohol.…”
Section: Resultsmentioning
confidence: 99%
“…Comparing the infrared spectra before and after the oxidation reaction, it can be seen that the peak near 1711 cm −1 was significantly enhanced, assigned to the carboxyl group (C=O) characteristic absorption peak [ 20 ]. The peak near 1213 cm −1 was also significantly enhanced, corresponding to phenolic hydroxyl or tertiary alcohol.…”
Section: Resultsmentioning
confidence: 99%
“…According to reports, most of the components of the asphaltene molecule are carbon and hydrogen, with just a minor amount of heteroatom and heavy metal elements, which are quantitatively determined using various methods. , These methods consist of XRF analysis, Rock-Eval analysis, and elemental analysis (CHNS). Table displays the outcomes of the Rock-Eval examination of the samples of extracted asphaltene.…”
Section: Resultsmentioning
confidence: 99%
“…The same experimental procedure was then performed for the selected IL solution with a concentration of 5000 ppm in SW, FW, dSW2000, and dFW2000 to determine the effect of salinity on the fluid–fluid interfacial behavior. It should be noted that, despite the high applicability of ATR-FTIR analysis in the detection of organic materials and molecular bands, it lacks a good efficiency in the presence of polar solvents, attributed to the dependency of the obtained peak intensity to several factors including the polarity of the molecules and the strength of the bond. This inefficiency was obvious in the results of ATR-FTIR analysis from the water phase near the interface of oil and water because of the high polarity and a strong hydrogen bond of the water molecules. The results show an intensive broad peak belonging to the O–H bond that overlaps and covers the other peaks belonging to the ILs along with its significant high intensity, making the other peaks a low intense vibrational noise.…”
Section: Methodsmentioning
confidence: 99%