Evaluation of Gas Chromatographic Columns for the Separation of Fluorinated Materials.

Lysyj, Ihor; Newton, Peter R.

doi:10.1021/ac60194a028

Cited by 32 publications

(5 citation statements)

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“…A new type of fluorinated compound usually requires experimenting in order to find the optimum conditions for the separation of individual components, especially in the case of isomeric compounds with similar boiling points, volatilities, and retention times. General features of this method of separation and purification of compounds as well as their identification by means of retention times or elution volumes are summarized in several papers and reviews [177][178][179][180][181][182].…”

Section: Separation Of Mixtures and Purification Of Com-ponentsmentioning

confidence: 99%

Organic Fluorine Chemistry

Hudlický

1971

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Section: Separation Of Mixtures and Purification Of Com-ponentsmentioning

confidence: 99%

Organic Fluorine Chemistry

Hudlický

1971

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“…Gas chromatographic-mass spectrometric procedures (8,9) have been shown to meet both the specificity and sensitivity requirements for the analysis. However, the technique requires sophisticated instrumentation that does not lend itself conveniently to on-site plant analysis.…”

Section: Resultsmentioning

confidence: 99%

Quantitative analysis by gas chromatography of perfluoroperoxide (CF3OOCF3), peroxysulfonate (CF3OOSO2F), and peroxydisulfuryl difluoride (S2O6F2)

Descamps¹,

Forst²

1975

Anal. Chem.

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The pyrolysis of bis(trifluoromethyl) peroxide CF3OOCF3 (BTMP) is known (1, 2) to produce equimolar amounts of CF3OF and COF2 by a complex reaction due to CF3O radicals formed by the initial thermal cleavage of the 0-0 bond in BTMP. If the pyrolysis of BTMP is carried out in the presence of peroxydisulfuryl difluoride S20eF2, the latter compound cleaves thermally (3, 4) into the fluorosulfate free radical SO3F, which then reacts with the CF3O radicals to form (5) the trifluoromethyl peroxysulfonate CF3OOSO2F; this compound is stable at the temperature of the experiment (~250 °C). Although the BTMP-S2O6F2 system presents special interest from the reaction kinetic point of view ( 6), we wish to report here on the analytical aspects of the problem which are interesting in their own right. Gas chromatography of compounds containing fluorine and oxygen presents special difficulties if quantitative analysis is attempted. Compounds containing sulfur, in addition to oxygen and fluorine, seem even more temperamental in their gas chromatographic behavior. This note deals with quantitative gas chromatographic analysis of mixtures consisting of BTMP, CF3OOSO2F, and S2O6F2. EXPERIMENTALApparatus. A special gas chromatograph was built where parts

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“…During our tests of different column materials some support for this concept was obtained, as it was discovered that the uncoated support showed some separative ability for halogens, but attempts to enhance this without the addition of liquid polymer were unsuccessful. However, there is also evidence that the Halocarbon-Kel-F powder used as a separating medium by Lysyj and Newton (21) is not the same as that used by us, because the order of elution of the gases HF, F2, CI2, and C1F3 is very different.…”

Section: Possiblementioning

confidence: 87%