CATALYST Russian patent published in 2022 - IPC B01J23/887 B01J35/08 B01J35/10 C07C45/35 C07C47/22 C07C51/25 C07C57/05 

FIELD: chemistry.

SUBSTANCE: invention relates to a catalyst for the production of unsaturated aldehyde and unsaturated carboxylic acid. A catalyst for the production of acrolein and acrylic acid containing molybdenum (Mo), bismuth (Bi), cobalt (Co), nickel (Ni) and iron (Fe) is described, and in this catalyst the total pore volume (A) in this catalyst for pores having a diameter of 1 mcm or more to 100 mcm or less, is from 0.12 ml/g or more to 0.19 ml/g or less, and the ratio (A/B) of the total pore volume (A) to the total pore volume (B) having a pore diameter from 1 mcm or more to 100 mcm or less in the crushed product is not passing through a Tyler 6 mesh (a sieve with a hole size of 3.36 mm), for the crushed product obtained by grinding the catalyst under the condition of grinding A is from 0.30 or more to 0.87 or less.

EFFECT: achieving an excellent degree of olefin conversion and suitable selectivity for unsaturated aldehyde such as acrolein, and suitable selectivity for unsaturated carboxylic acid such as acrylic acid, in particular, a high selectivity ratio for unsaturated carboxylic acid such as acrylic acid, as well as increased yields of unsaturated aldehyde such as acrolein, and unsaturated carboxylic acid, such as acrylic acid.

5 cl, 3 ex, 1 tbl