Paraffin-Cycloparaffin Separations by Liquid Displacement Partition Chromatography

Sauer, Rudolf; Washall, T. A.; Melpolder, F. W.

doi:10.1021/ac60129a023

Cited by 7 publications

(2 citation statements)

References 10 publications

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“…However, complete separation of isoparaffins from cycloparaffins, and further separation of the latter by types and ring-number, is much more complex. Methods that provide reasonable separation include azeotropic distillation as well as liquid displacement partition chromatography with aniline . Mair et al investigated the separation of petroleum hydrocarbons by liquid chromatography with Sephadex LH-20, a methylated cross-linked dextran that has been used primarily for gel filtrationa technique that segregates compounds according to their hydrodynamic volume.…”

Section: Introductionmentioning

confidence: 99%

Diesel Fuel Analysis by GC-FIMS: Normal Paraffins, Isoparaffins, and Cycloparaffins

Briker¹,

Ring²,

Iacchelli³

et al. 2001

Energy Fuels

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A reliable and convenient characterization method that provides a detailed hydrocarbon composition profile for transportation fuels is an important part of process optimization directed at reducing regulated emissions. In our previous study (Briker, Y.; Ring, Z.; Iacchelli, A.; McLean, N.; Rahimi P. M.; Fairbridge, C.; Malhotra, R.; Coggiola, M. A.; Young, S. E. Energy Fuels 2001, 15 (1), 23-37) we described the development of a modified gas chromatography, field ionization mass spectrometry method for detailed hydrocarbon type characterization of diesel fuel. The method proved to be an invaluable technique for rapid analysis of diesel fuel. It was less timeconsuming and more informative than the existing mass spectrometry methods, from a characterization point of view, and it was user-friendly and did not require any major modification to an existing commercial instrument, from an instrumentation point of view. This method correlated well with the other methods for total aromatic and saturate groups, and the data for aromatic subgroups were verified against the data obtained from other mass spectrometric and nonmass spectrometric techniques. This paper describes a continuing effort to verify the new GC-FIMS method and produce correlations for the saturate groups. The purpose of this study was to validate GC-FIMS measurements of various saturate types using samples of physically separated fractions, enriched in the individual types by various LC methods described in the literature. In this study, the non-normal paraffinic portion of the saturate fraction of the selected diesel cut was separated into iso-and cycloparaffins. The normal paraffins were quantitatively removed by molecular sieve and additionally determined by high-resolution gas chromatography of the saturate fraction. The contents of iso-and cycloparaffins were calculated gravimetrically in each separated fraction and also analyzed by mass spectrometry methods. The results obtained for the saturate types by different methods were all in good agreement, which demonstrates the applicability of the GC-FIMS method for saturates analysis.

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Section: Introductionmentioning

confidence: 99%

Diesel Fuel Analysis by GC-FIMS: Normal Paraffins, Isoparaffins, and Cycloparaffins

Briker¹,

Ring²,

Iacchelli³

et al. 2001

Energy Fuels

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“…The further separation of paraffincycloparaffin hydrocarbons has been described bv Sauer and others (11), who used liquid displacement chromatography with aniline as the stationary phase supported on silica gel. The samples were displaced from the columns with isopropyl alcohol and benzene, making recovery of the fractions relatively easy.…”

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confidence: 99%

Separation of Paraffin-Cycloparaffin Portion of Naphtha into Normal, Branched, and Cycloparaffins

Norris¹,

O'Connor²

1959

Anal. Chem.

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Vorschlag eines komplexen Analysenverfahrens zur Charakterisierung technischer Kohlenwasserstoff‐gemische im Siedebereich 160–250°C

Runge¹,

Wilde

Berthold³

et al. 1970

J. Prakt. Chem.

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Unter Einbeziehung moderner physikalisch‐chemischer Methoden wurde ein komplexes Analysenverfahren zur qualitativen und quantitativen Strukturtypen‐ und Strukturgruppenanalyse von technischen Kohlenwasserstoffgemischen im Siedebereich 160–250° erarbeitet. Zu diesem Zweck wurden selektive chromatographische sowie typen‐ und gruppen‐spezifische spektrometrische Methoden so eingesetzt, daß sich eine bezüglich der Aufgabenstellung optimale Kombination und Aufeinanderfolge von Trennungs‐ und Identifizierungs‐schritten ergab, vergleichbar etwa dem aus der anorganischen Analytik bekannten Trennungsgang.

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Paraffin-Cycloparaffin Separations by Liquid Displacement Partition Chromatography

Cited by 7 publications

References 10 publications

Diesel Fuel Analysis by GC-FIMS: Normal Paraffins, Isoparaffins, and Cycloparaffins

Diesel Fuel Analysis by GC-FIMS: Normal Paraffins, Isoparaffins, and Cycloparaffins

Separation of Paraffin-Cycloparaffin Portion of Naphtha into Normal, Branched, and Cycloparaffins

Vorschlag eines komplexen Analysenverfahrens zur Charakterisierung technischer Kohlenwasserstoff‐gemische im Siedebereich 160–250°C

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