Abstract
Using vanadium oxide-molybdene oxide-phosphor pentoxide catalysts with anatase, silica gel, gypsum, celite and alundam as carrier, the vapor phase oxidation of iso-butylene was carried out.Comparing the selectivity of the oxidation reaction by air with that of by the mixture of nitrogen and air, the following conclusions were obtained.1) The selectivity of carbon dioxide is decided by the sort of catalyst and it is not affected by the concentration of oxygen in reactant.2) The formation of carbon dioxide and methacrolein takes place as simultaneous reactions.3) The formation of carbon monoxide mainly takes place as a successive reaction via methacrolein.
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