Patent ID: 8642825
Filing Date: 2014-02-04
Classification: B01J,C07C,Y02P

Abstract:
1. A process for the oxidative dehydrogenation of a C 2-6 alkane having a purity of greater than 95% to the corresponding olefins at a selectivity of not less than 95% of said corresponding olefin comprising: continuously supplying an oxygen containing gas and said alkane to the opposite sides of an inert porous ceramic membrane with a catalytic dehydrogenation catalyst supported on the surface of the porous ceramic membrane exposed to said alkane at a temperature from 300° C. to 550° C., a pressure from 0.5 to 100 psi (3.447 to 689.47 KPa), a productivity of not less than 1000 g of olefin per kg of catalyst per hour and an hourly space velocity of alkane and oxygen containing gas of not less than 900 h wherein the oxidative dehydrogenation catalyst is supported on inert porous ceramic membrane having a surface area from 10 to 200 m and wherein said catalytic dehydrogenation catalyst comprises a mixed oxide catalyst selected from the group consisting of mixed oxide catalysts of the formula V x is from 0.1 to 0.9; y is from 0.001 to 0.5; z is from 0.001 to 0.5; m is from 0.001 to 0.5; n is from 0.001 to 0.5; p is a number to satisfy the valence state of the mixed oxide catalyst; the ratio of x:m is from 0.5 to 8; and wherein said catalytic oxidative dehydrogenation catalyst also comprises at least one component capable of extracting oxygen from said oxygen containing gas while it passes through said catalyst and releasing oxygen to the oxidative dehydrogenation reaction while said alkane passes through said catalyst to prevent the formation of an explosive mixture of said alkane and said oxygen containing gas.