| abstract |
(57) [Problem] To provide a method for efficiently producing an unsaturated aldehyde and an unsaturated acid and a catalyst suitable for the method. A catalyst obtained by supporting a catalytically active component on a carrier and calcining the same, wherein the average particle size of the catalyst is 4 to 16 mm, the average particle size of the carrier is 3 to 12 mm, and the calcination temperature Is 500 to 600 ° C., and the amount of the catalytically active component supported on the carrier is 5 to 80 wt% (weight of the catalytically active component / (weight of the catalytically active component + weight of the carrier + weight of the strength improver)). And a method for producing an unsaturated aldehyde and an unsaturated acid using the catalyst. |