Monooxygenation of propylene

Epoxidation and hydroxylation activity of iron(III) perfluorotetraphenylporphyrin biomimic was studied in a quartz flow reactor with the reaction zone 1.7 cm long and 1.8 cm in diameter. Kinetic regularities of monooxygenase reaction were studied at 180-320 °C and molar ratios C3H6 H202 equal 1 0.5 and 1 2. 

Dependence of the number of cycles (v) on aqueous hydrogen peroxide concentration (C) (q is H202 consumption) 

The presence of maxima on the curves is explained as follows. If the ratio S H202 is below 1 1.5, H202 concentration in the reaction mixture increases, which intensifies primary catalase reaction (7.7). A significant amount of general intermediate of conjugated reactions (7.7) and (7.8) is consumed in the first of them. As a consequence, the induction effect of this process on epoxidation is reduced. 

Conversion of C3H6 in the ratio interval between 1 1.5 and 1 2 is decreased by 3 wt.%, whereas for epoxide this value equals 10 wt.%. These data show that the increase in yields of other oxidation products is caused by epoxide isomerization and the parallel proceeding of other catalytic reactions. It should be noted that chromatographic tests have detected only unreacted C3H6 in the gas products, whereas CO, C02 and other products of C3H6 degradation were not observed. 

It is common knowledge that propylene oxide is isomerized to propionic aldehyde in the presence of aluminum oxide in the temperature range between 250 and 260 °C [76], This is 

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According to data in the literature [1], catalytic monooxygenation of propylene with hydrogen peroxide in the presence of perFTPhPFe(III)0H/Al203 has an intermediate, shaped... 

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