Patent ID: 7285514

Claim:
A method for preparing a catalyst for partial oxidation of acrolein, represented by the following Chemical Formula 1 and having a BET surface area of 4 to 15 m 2 /g, comprising the steps of: a) dissolving the following metal salts: i) a molybdenum salt, ii) a tungsten salt, iii) a vanadium salt, iv) a salt of a metal selected from the group consisting of iron, copper, bismuth, chromium, tin, antimony, and potassium, and v) a salt of an alkaline earth metal in water to prepare a catalyst suspension; b) introducing a base solution and an acid solution into the a) catalyst suspension to control acidity of the catalyst suspension to a pH of 3.5 to 6.5, wherein the acid solution is an organic acid solution having 1 to 10 carbon atoms; c) contacting the b) catalyst suspension of which acidity is controlled with an inert support to support the catalyst thereon; and d) drying and firing the c) supported catalyst: MO a W b V c A d B e O x [Chemical Formula 1] wherein Mo is molybdenum, W is tungsten, V is vanadium; A is iron, copper, bismuth, chromium, tin, antimony, or potassium; B is an alkaline earth metal; and a, b, c, d, and e respectively represent the atomic ratio of each metal, and when a is 12, b is 1-5, c is 1-6, d is 1-5, and e is 0<e≦3, and x is determined according to the oxidation state of each metal.