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.
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.
[12] 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.