Patent ID: 9409156
Filing Date: 2016-08-09
CPC Classification: B01J,C07C,Y02P

Claim Text:
1. A process for the oxidative dehydrogenation of ethane to ethylene, which comprises contacting a feedstock comprising ethane and an oxidizing agent under oxidative dehydrogenation reaction conditions with a tellurium-free, multimetallic mixed oxide solid catalyst having the formula wherein, h and i, respectively, are each between 0.001 and 4.0, the ratio i/h is between 0.3 and 10.0, and x represents the number determined by and consistent with the valence requirements of elements present in the multimetallic mixed oxide solid catalyst, said multimetallic mixed oxide solid catalyst having an orthorhombic M1 crystalline phase along with a pseudo-hexagonal M2 crystalline phase and an orthorhombic MoO A) a process which comprises forming a tellurium-free mixture of molybdenum, vanadium and antimony metallic precursors and a compound selected from the group consisting of primary amines, secondary amines, tertiary amines, ammonia, tetra-methyl ammonium and hydrazine, and subjecting said tellurium-free mixture to hydrothermal condition at a temperature of 100-200° C. for 6-150 hours to obtain a solid, washing and drying said solid to obtain a dried solid, and thermally activating said dried solid to form a catalyst having the pseudo-hexagonal M2 crystalline phase and the orthorhombic MoO