METHOD FOR ACTIVATING METAL OXIDE CATALYST

摘要

PURPOSE: To further enhance the activity of a metal oxide catalyst contg. Mo and/or V for a vapor phase catalytic oxidation reaction of hydrocarbon through a simple operation by subjecting the catalyst to acid treatment. CONSTITUTION: A metal oxide catalyst contg. Mo and/or V for a vapor phase catalytic oxidation reaction of hydrocarbon is subjected to acid treatment. The atomic ratio of Mo to V in the metal oxide is preferably 0.1-2. The acid treatment is carried out by immersing the catalyst in an about 0.1-50wt.% aq. soln. of an inorg. or org. acid at room temp. to 90 deg.C. After the acid treatment, the catalyst is separated from the acid soln. by a method such as filtration or centrifugal separation. The separated catalyst is usually washed with water in some degree, dried and used as a catalyst. The dried catalyst may be heated at about 100-700 deg.C if necessary before use.