Patent ID: 9101908
Filing Date: 2015-08-11
Classification: B01D,B01J

Abstract:
1. A method for preparing a vanadia-titania catalyst, comprising: vaporizing a titanium precursor; conveying the vaporized titanium precursor to a reaction unit together with an oxygen supplying source; reacting the vaporized titanium precursor conveyed to the reaction unit with the oxygen supplying source to produce titania particles; condensing the titania particles, collecting and recovering them; mixing the recovered titania particles with a vanadium precursor solution; drying the mixture of the titania particles with the vanadium precursor solution; and calcining the dried mixture under oxygen atmosphere or air, wherein the vanadia-titania catalyst obtained from said calcining has a specific surface area 1.5-3 times higher than the specific surface area of the titania particles recovered from said recovering.