| 摘要 |
A method for a gas phase catalytic oxidation reaction of a hydrocarbon, which comprises subjecting an alkane having a carbon number of from 3 to 8 and/or an alkene having a carbon number of from 2 to 8 to a gas phase catalytic oxidation reaction in the presence of a mixed metal oxide catalyst, wherein the reaction is carried out in the presence in the reactor of particles substantially inert to the reaction in an amount within a range of from the same amount as the amount of the catalyst to 99 wt% in all particles in the reactor, particularly a method for a reaction to produce an alpha , beta -unsaturated nitrile, wherein the gas phase catalytic reaction is carried out in the presence of ammonia. More particularly, a method for the gas phase catalytic oxidation reaction, wherein, after the reaction, the particles substantially inert to the reaction are withdrawn in the form of a mixture with the mixed metal oxide catalyst, the inert particles are separated and recovered from the mixture, and the separated inert particles are used again as being present in the reactor. By such present invention, it is possible to effectively control the reaction temperature and the quantity of heat generated by the reaction and thereby to produce a nitrile or an unsaturated carboxylic acid further efficiently, in the method for a gas phase catalytic oxidation reaction of a hydrocarbon, specifically in the method for producing a nitrile and/or an unsaturated carboxylic acid by a gas phase catalytic oxidation reaction of an alkane or an alkene, particularly in the method for producing a nitrile using an alkane having a carbon number of from 2 to 8 as the raw material, especially when a fluidized bed reactor is employed. Further, it is very economical that after the reaction, the mixture of the catalyst component and the component inert to the reaction, is separated and recovered, and the inert component is reused for the reaction. |
