GC-MS analysis of the ethyl acetate extract of Streptomycetes cavourensis SKCMM1 fermented broth Classification Compound % Aniline Compound 2,4-Dimethoxy-tri phenylamine 0.52 Fatty acid Pentanoic acid 1.76 2,4,6-Octatrienoic acid 2.74 Hydroxy Compound 1,4-Dioxane-2,6-dimethanol 13.06 Caryophyllenyl alcohol 0.67 3-Cyclohexen-1-ol 0.67 Geosmin 2.48 Hydrocarbons 1,5-Bis pentane 0.47 Docosane 0.50 Cycloheptanone 1.12 Benzene 2.12 Cycloalkane
compound Cyclohexane 7.58 Cyclopropane 1.11 Aromatic compound 1,3-Bisbenzo thio phene 8.66 Carboxamide Cyclopropane carboxamide 0.8 Unknown compounds 55.74
The double adsorption bands at 3000 [cm.sup.-1] and 2920 [cm.sup.-1] in Figure 2b are due to the presence of C[H.sub.2], indicating the carbon-chain or cycloalkane
structure of kerosene.
In this section six major gasoline hydrocarbon groups (nalkane, iso-alkane, olefin, cycloalkane
, aromatics, and oxygenated groups) and the relevant components to gasoline fuel are reviewed and discussed.
The infrared spectrum has the following features ([cm.sup.-1]): 3300 typical absorption of C-H stretch in alcohols and phenols; 2900 absorption characteristic of C-H stretch of methylene groups; 1720 typical of C=O stretching vibrations of carbonyl group; 1450 [cm.sup.-1] of C[H.sub.2]; and 1400 typical of COC[H.sub.3]; other absorption peaks include 1200 [cm.sup.-1] (OH), 1100 [cm.sup.-1] (cycloalkane
), and 950 [cm.sup.-1] .
Nandi and P Roy, "Peroxidative oxidation of cycloalkane
by di-, tetra- and polynuclear copper(II) complexes," Indian Journal of Chemistry A, vol.
The solvent may be a hydrocarbon solvent, such as hexane, propane, isobutene, or cycloalkane
. Polypropylenes produced by this method have a branching index of less than 0.934 with the cosolvent; the value is 0.994 to 0.946 without the nonsolvent (1.0 means no branching).
This result had already been observed, and can be rationalised in terms of the recalcitrant resistance to biodegradation of the major isoalkane and cycloalkane
fraction -circa 50%-present in Diesel fuel (Marchal et al.
 studied the decomposition chemistry of 1, l-bis(tertbutylperoxy)cyclohexane, one of cycloalkane
perketal initiators, for styrene polymerization.
Using Fischer-Hirschfelder-Taylor space filling models (Fischer) of the 2-(2-pyridyl) cyclopentanone and the 2-(2-pyridyl) cyclohexanone, the cycloalkane
ring is rigid in both the enol and the keto form but steric interactions appear greater in the keto form of the cyclopentane ring and in the enol form of the cyclohexane ring thus favoring the enol form in the five membered ring and the keto form for the six membered ring.
Analyses of the intertidal sediments in 1973 showed clearly the mixture of cycloalkane
compounds in concentrations as high as 2 milligrams per gram.