alkene

(redirected from Alkenes)
Also found in: Dictionary, Thesaurus, Encyclopedia.

alkene

 [al´kēn]
an aliphatic hydrocarbon containing a double bond.

al·kene

(al'kēn),
An acyclic hydrocarbon containing one or more carbon-carbon double bonds; for example, ethene, propene.
Synonym(s): olefin

al·kene

(al'kēn)
An acyclic hydrocarbon containing one or more double bonds; e.g., ethene, propene.
Synonym(s): olefin.
References in periodicals archive ?
In males, 25 compounds encompassed: 3 n-alkanes, 6 MB alkanes, 8 alkenes - monoenes, 6 alkenes - dienes, and two non-hydrocarbon compounds (cVA and squalene).
In the FID chromatogram the peaks of alkenes and unknown compounds disappeared by the hydrotreating, similarly to those of KH-LD and KH-MD.
[56] studied low-temperature branching mechanisms for alkenes and developed a kinetic model for n-hexene (1-hexene, trans-2-hexene, and trans-3-hexene) isomers.
Lower skewness values calculated for alkenes in relation to alkanes point out to the lower number of anomalous values of their concentrations.
When the temperature and relative humidity were held steady, the percentage of arenes increased as the ratio of air exchange rate-to-loading factor increased, but the percentage of alkenes and of aldehydes and ketones decreased at the same rate as this ratio increased (Fig.
Stevenson, "Ruthenium (II)--and rhenium(III)--catalysed addition of tetrahalogenomethanes to alkenes and 1, [omega]-dienes.
Alkene and reactive free radicals derived from thermal pyrolysis could be oxidized to form acid oxygen-containing compounds (peaks 11, 12, 31, 36, and 43), which lead to increasing acid number.
Some mechanistic questions surrounding the reaction of the cobalt dinitrosyl complex (CpCo[(NO).sub.2]) intermediate with alkenes to form dinitrosoalkanes have not been clearly resolved.
Keywords: Heterogeneous, Selective partial hydrogenation, Mesoporous silica, Nano composite, Alkynes, alkenes.
Noyori in Japan (14),(15) reported highly catalytic and selective hydrogenation of alkenes, especially allyllically heterofunctional alkenes.
ATR-FTIR, frequencies, intensity and functional group of fulvic acid sample Frequency Intensity Assignment Notes ([cm.sup.-1]) 3393.7 0.177 O-H Alcohols and phenols 1677.0 0.0998 C=O carboxylic acids 1620.6 0.142 C=C often weak 1103.9 0.266 C-O, C-N Polysaccharide or polysaccharide like compounds 664.1 0.242 R-C-H Unsaturated alkenes and aromatics 441.4 0.297 C-Br, C-I Often out of range of 587.4 0.317 -- instrumentation
2) and branched alkenes, and depleted in lignin-, carbohydrateand eucalyptus-derived pyrolysis products in comparison with NO-1 and MN-1.