Micro Vapor-Phase Hydrogenation Accessory for Gas Chromatographic Analysis of Fatty Acid Esters of Glyceride Oils

Mounts, T. L.; Dutton, H. J.

doi:10.1021/ac60225a004

Cited by 27 publications

(6 citation statements)

References 35 publications

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“…In the following procedure the glass reaction chamber of the MRA was packed with platinum-on-alumina catalyst and mixed with Chromosorb P in such a way that the mixture contained 0. The chromatographic results of this hydrogenation experiment were identical to those reported earlier (19). An injection of 0.5 /al of soybean methyl esters was used as a standard.…”

Section: Hydrogenationsupporting

confidence: 82%

MRA microeactions for lipid analysis

Bitner

Lanser

Dutton

1970

Lipids

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Many types of reactions have been performed on a microscale with the microreactor apparatus (MRA) system, which incorporates a modified soldering gun. Specific procedures developed for some typical reactions include bromination of olive methyl esters, silylation of castor methyl esters, homogeneous reduction of oleic acid, heterogeneous reduction of soybean methyl esters, several methods of methyl ester preparation from soybean fatty acids and saponification of soybean triglycerides followed by esterification. The reaction chamber of the MRA has been redesigned to increase its versatility and to reduce explosion hazards when diazomethane is used. Advantages of the MRA over other systems are less handling of sample, minimum hazards due to small sample size and direct injection of products into analytical instruments, such as a gas chromatograph or mass spectrometer.

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Section: Hydrogenationsupporting

confidence: 82%

MRA microeactions for lipid analysis

Bitner

Lanser

Dutton

1970

Lipids

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“…Although these variations may introduce minor differences in results, major variables are the substrate and the chromatographic procedure. Although it is recognized that separation factors on different substrates can provide additional specificity for identification (6), it would be most helpful to be able to set up one or two standardized substrates and procedures so that separation factors that are determined may become more generally useful. For this purpose, a dead-volume correction should be applied.…”

Section: Discussionmentioning

confidence: 99%

“…The hydrogenator, which may be installed or removed in a few minutes, is held at the same temperature as the analytical column. The apparatus and procedure are based in part on the method advanced by Dutton and Mounts (3,6) for gas chromatographic analysis of fatty acid methyl esters. If a bypass or a partially packed catalyst bed is included, separation factors of compounds-i.e., retention time ratios of unsaturated and saturated species-may be determined.…”

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confidence: 99%

Apparatus for Reaction Gas Chromatography. Instantaneous Hydrogenation of Unsaturated Esters, Alcohols, Ethers, Ketones, and Other Compound Types, and Determination of Their Separation Factors.

Beroza¹,

Sarmiento²

1966

Anal. Chem.

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“…Silica-alumina catalysts were tested for cracking isobutane and cumene {70), for the depolymerization of ethylene {71), for the isomerization of cyclopropane {60), isobutane (77), and isopentane {64), and for the conversion of acetaldehyde {44). Hydrogenation (77,12,18,41,69,93), dehydrogenation {104), and thermal degradation {3) have also been studied. The reactivities of naphthenes over a platinum reforming catalyst {47), the hydrodesulfurization of thiophenes {16, 76-78), and the isomerization of cycloalkenes on aluminum oxide {54, 55) were similarly investigated.…”

Section: Microreactorsmentioning

confidence: 99%