Pentane/Pentene

Definition (in vol %) Mainly butanes/butenes < 19% propane/propylene 90% approx, propane/propylene 10% ethane/ethylene/butanes/butenes Mainly propane, butanes and propylene/butenes/pentanes/pentenes... 

With A in kcal/mol, a few examples are (experimental values are given in parentheses) propane/propene, 860.1 (858.56) butane/butene, 1154.2 (1154.5) pentane/pentene, 1448.2 (1447.6) cyclohexane/cyclohexene, 1616.8 (1616.1) methylcyclohexane/l-methylcyclohexene, 1913.1 (1913.2) cyclohexane/1,4-cyclo-hexadiene, 1472.8 (1472.8), and butane/butadiene, 1010.2 (1010.1). (Where appropriate, the averages of the various alkene isomers were used.)... 

Mixed Solvents Effect. Using mixed solvents can improve selectivity. For example, adding small amounts of water has improved the selectivity of furfural in separating C4 hydrocarbons (24). Baumgarten and Gerster (25) have studied how various solvents affect the selectivity of furfural for the pentane-pentene pair. They concluded that for only a few solvents some improvement was observed. The resulting selectivity lies between the selectivity of the pure solvents (see Table III). To avoid immiscibility at high solvent concentrations, a second solvent is sometimes added (25). 

In this study, suboxides of vanadia catalysts were used in pentane, pentene, dicyclopentadiene and cyclopentane oxidation reactions. In the previous phase of the work [12,13], the role of alkali promoters on the catalyst selectivity was examined. The catalysts were reduced in situ at different temperatures and the effect of pre-reduction temperature was investigated. Controlled-atmosphere characterization of pre-reduction, post-reduction, and post-reaction catalysts were performed using X-ray diffraction. X-ray photoelectron spectroscopy, laser Raman spectroscopy and temperature-programmed desorption experiments. The objectives of this study were to determine the activity and selectivity of different suboxides of vanadia in... 

Methode B Vinyl-cyclopropane + Bicyclo [2.1.0]pentan + Penten-(1) t ... 

Diphenyl Dipentene Dod( cannl Very soluble 10 >100 n-Pentane Pentene 1 2 Perchloric acid 0.35 7.1 Reacts violently ... 

Mass spectroscopic analysis of the volatile fractions released by PP during its half-life at 380-410 °C has shown that butane, butane, hexane, hexene, pentane, pentene and propylene are the main products of decomposition. 

Butadiene Polylactic acid Pentanes, pentene Succinic acid Phenolics Ethanol Butanol Organic acids Furfural Polyols Levulinic acid Sorbitol Xylitol Others... 

Crude wood turpentine differs from normal turpentine primarily in that it contains additional terpenes, and terpene derivatives, t< ether with other non-terpene derivatives. In that obtained by the destructive distillation of longdeaf yellow pine, dipentene, pentane, pentene, toluene, heptine, etc., have been identified, in addition to pinene. 

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