1966 Volume 39 Issue 10 Pages 2101-2104
The catalytic oxidation of propylene by the flow method was carried out in order to investigate the correlation between the activity and the physical properties of the catalyst, using the oxides of zinc, copper, nickel, cobalt, iron, manganese, chromium, vanadium and titanium, all of which were supported with alumina. The analysis by means of gas chromatography indicated that the main products of the reaction were carbon dioxide and water. An abrupt increase in the rate of conversion against the temperature, denoted by CT, was irrespective of the amount of oxide and was characteristic of each oxide. The CT was expressed as a function of the % d character of the metal of the oxide, as well as a function of the heat of formation per gram-atom of oxygen in the oxide. The mechanism of the abrupt change in the rate of conversion was discussed in relation to the ability of oxygen to be removed from the oxide and the amount of propylene adsorbing on the oxide during the reaction.
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