A catalyst molded body, a catalyst molded body for producing methacrolein and / or methacrylic acid, and a method for producing methacrolein and / or methacrylic acid.

摘要

Provided are a catalyst capable of producing methacrolein and / or methacrylic acid while maintaining a high reaction rate of a high raw material compound and a high selectivity for a long period of time, and a method for producing methacrolein and / or methacrylic acid. The purpose is. When the density (g / cm3) of the catalyst molded body is X, the filling bulk density (g / cm3) of the catalyst molded body is Y, and the representative length (cm) of the catalyst molded body is Z, the following formula (1) and A catalyst molded body that satisfies (2). 0.700 (g / cm3) 2 ≦ (X × Y) ≦ 1.200 (g / cm3) 2 ・ ・ ・ Equation (1) 0.050 g / cm2 ≦ (X × Z) ≦ 0.130 g / cm2 ・.・ ・ Equation (2)