Determination of heavy polycyclic aromatic hydrocarbons by non-aqueous reversed phase liquid chromatography: Application and limitation in refining streams

Panda, Saroj K.; Muller, Hendrik; Al-Qunaysi, Thunayyan A.; Koseoglu, Omer

doi:10.1016/j.chroma.2017.11.061

Cited by 19 publications

(26 citation statements)

References 23 publications

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“…The same strategy, yet with slight modifications in reaction conditions, led to the mononaphtho‐ and monoanthracenocoronenes C3 and C4 , the derivatives expanding coronene by a naphthalene or an anthracene unit respectively [41] . After these reports, these three hydrocarbons were further used in some applicatioins [42–43] …”

Section: Resultsmentioning

confidence: 99%

Coronenes, Benzocoronenes and Beyond: Modern Aspects of Their Syntheses, Properties, and Applications

Kumar

Tao

2021

Chemistry An Asian Journal

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In recent years, a variety of new designs of coronene‐based polycyclic aromatic hydrocarbons (PAHs) with diverse functions have emerged to serve as complementary materials in organic chemistry and materials chemistry. In the present review, we highlight the modern aspects of syntheses related to or different from the strategies used in the early era of coronene research. Systematic extension and expansion of coronene backbones to wide categories of angular PAHs are covered. The substitution and extension of coronene architectures, by incorporating functional groups and by fusing small and large conjugated units, advatangeously enrich their photophysical, electrochemical, self‐assembling, and other properties, of which are discussed to demostrate their impact in materials chemistry. While the highly symmetric coronenes, tribenzocoronenes and hexabenzocoronenes conceived wide potential in charge‐transporting, electroluminescent, sensing, and other applications, other related derivatives such as dibenzo, tetrabenzo and pentabenzocoronenes also displayed their potentials as exemplified by their use as charge‐conduction channel in transistor application.

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Section: Resultsmentioning

confidence: 99%

Coronenes, Benzocoronenes and Beyond: Modern Aspects of Their Syntheses, Properties, and Applications

Kumar

Tao

2021

Chemistry An Asian Journal

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“…Indeed, carbon dioxide, which constitutes the SFC mobile phase, can be assimilated to heptane in terms of eluent strength and thus can elute the most apolar compounds. Moreover, no sample preparation is needed, as opposed to LC …”

Section: Resultsmentioning

confidence: 99%

“…Moreover, no sample preparation is needed, as opposed to LC. 16 On the basis of a previous study, methanol was selected as cosolvent. 26 Indeed, Zhang et al showed that on a BEH 2-EP column, among the cosolvents investigated (acetonitrile, methanol, isopropyl alcohol, and hexane), only methanol was able to elute the 16 PAHs, especially the benzo[ghi]perylene, the heaviest PAH studied.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…One of the main historical analytical tools used for petroleum characterization is gas chromatography (GC) and two-dimensional GC (GC×GC). − However, these techniques are usually limited to polycyclic aromatic hydrocarbons with less than eight benzene rings (coronene) due to their low volatility. − At the opposite end, liquid chromatography (LC) is a suitable technique for heavy products analyses. In the literature, some works have already proposed analytical methods to quantify HPAHs in hydrocracked products using nonaqueous reversed-phase liquid chromatography (NARP), as was done by Panda et al Yet, the authors explained that the developed method was restricted to the streams with low sulfur content and thus not applicable to most VGOs. Indeed, the molecular composition of a VGO introduced in the reactor significantly differs from the HCK products, as a VGO contains more aromatic, more alkylated, and more sulfur-containing HPAHs than HCK products.…”

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Input of an Off-Line, Comprehensive, Three-Dimensional Method (CPC×SFC/HRMS) to Quantify Polycyclic Aromatic Hydrocarbons in Vacuum Gas Oils

et al. 2020

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Heavy polycyclic aromatic hydrocarbons (HPAHs) are known to cause undesirable effects in petroleum hydrocracking processes by deactivating the catalysts and accumulating in the downstream of reactors. Polycyclic aromatic hydrocarbons with less than seven rings (PAHs) naturally contained in vacuum gas oils (VGOs) act as precursors in the HPAHs formation. However, getting a detailed quantitative characterization of such polycyclic hydrocarbons has never been done until now, because of the high chemical complexity of VGOs. Thus, an off-line, comprehensive, three-dimensional methodology was required to achieve a quantitative analysis: centrifugal partition chromatography (CPC) as the first dimension of separation, supercritical fluid chromatography (SFC) as the second dimension hyphenated to Fourier transform ion cyclotron resonance mass spectrometry as the third dimension. In this study, we demonstrated that the developed CPC method fractionated samples according to the hydrocarbons’ alkylation degree, whereas our SFC method provided an elution order according to their double bond equivalent. Finally, high-resolution mass spectrometry (HRMS) brought crucial information on the identity of analytes and proved to be essential in the event of unresolved peaks from CPC and SFC chromatograms. To assess the ability of the three-dimensional method for quantification purposes, matrix effects were evaluated by spiking VGO samples with deuterated pyrene. A strong ion suppression phenomenon was highlighted when using only SFC/HRMS, whereas no significant matrix effect was observed with the CPC×SFC/HRMS approach. These experiments revealed the great potential of this innovative methodology to quantify both PAH and HPAH in VGOs for the first time.

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“…However, ionisation competition cannot be solved with IMS-MS. Using chromatographic separation is a relevant way to overcome this limitation; for instance, Panda et al proposed a nonaqueous reversed phase chromatography (NARP) method to quantify PAHs in a recycle UCO stream [25]. Unfortunately this method is well-adapted to streams with low sulphur contents but is not applicable to VGO feedstocks.…”

Section: Introductionmentioning

confidence: 99%

A three-dimensional semi-quantitative method to monitor the evolution of polycyclic aromatic hydrocarbons from vacuum gas oil feedstocks to lighter products

Reymond

Masle

Colas

et al. 2021

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Determination of heavy polycyclic aromatic hydrocarbons by non-aqueous reversed phase liquid chromatography: Application and limitation in refining streams

Cited by 19 publications

References 23 publications

Coronenes, Benzocoronenes and Beyond: Modern Aspects of Their Syntheses, Properties, and Applications

Coronenes, Benzocoronenes and Beyond: Modern Aspects of Their Syntheses, Properties, and Applications

Input of an Off-Line, Comprehensive, Three-Dimensional Method (CPC×SFC/HRMS) to Quantify Polycyclic Aromatic Hydrocarbons in Vacuum Gas Oils

A three-dimensional semi-quantitative method to monitor the evolution of polycyclic aromatic hydrocarbons from vacuum gas oil feedstocks to lighter products

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