Saturated Propylene Propene

A process, which uses propene bromohydrin as an intermediate, has been extensively studied as a route for the conversion of propene to propylene oxide [62, 63], The electrolyte is an aqueous solution of sodium bromide saturated with propene gas. An undivided flow cell fitted with a graphite anode is used. Overall, propylene oxide and hydrogen are generated in the sequence of cell reactions given in Scheme 2.3. 

Coefficients of the equadon of state and of the equation for transport properties are stored for each substance. Parameters of the critical point and coefficients of equations for calculadon of the ideal-gas functions, the saturated vapor pressure and the melting pressure are kept also. The thermal properties in the single-phase region and on the phase-equilibrium lines can be calculated on the basis of well-known relations with use of these coefficients. The system contains data for 30 reference substances monatomic and diatomic gases, air, water and steam, carbon dioxide, ammonia, paraffin hydrocarbons (up to octane), ethylene (ethene), propylene (propene), benzene and toluene. The system can calculate the thermophysical properties of poorly investigated gases and liquids and of multicomponent mixtures also on the basis of data for reference substances. 

Olefins (alkenes contain double bonds) =c/ / C2H4,C3H6,C4H8,...,C H2 Ethene, propene, butane (ethylene, propylene, butylene) Diolefins contain two double bonds The compounds are unsaturated since C H2 can be saturated to C H2 +2... 

The mechanism of heterogeneous reactions of propylene on Y-type decationized molecular sieve catalysts at about or below 200 °C yielding saturated hydrocarbons such as propane, 2-methylpropane (isobutane), 2-methylbutane and 2-methylpentane has been studied using propene-[l- C]. The specific activity of propane has been found to be the same as the initial radioactivity of propene. The specific activity of 2-methylpentane... 

If we now let X = CH3 (methyl), we get a compound, C3H6 (propene or, commonly, propylene. Fig. 3.17). Notice how the root prefixhas been retained for this three-carbon species, and only the vowel changed to note the difference between saturated propane and unsaturated propene. 

Steam cracking, as shown in Fig. 2.2, is a petrochemical process in which saturated hydrocarbons are broken down into smaller, often unsaturated, hydrocarbons. It is the principal industrial method for producing lighter alkenes (olefins), including ethene (or ethylene), and propene (or propylene). 

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