Patent ID: 6458737
Filing Date: 2002-10-01
Classification: B01J,C07C

Abstract:
A catalyst for oxidation of a methylbenzenewhich is used for the production of the corresponding aromatic aldehyde by the gas-phase oxidation of a methylbenzene in the presence of molecular oxygen, and has a composition of the following general formula (1): WaXbYcOxâ€ƒâ€ƒ(1) â€ƒwherein W represents a tungsten atom; X represents Sb; Y represents at least one element selected from the group consisting of Fe, Co, Ni, Mn, Re, Cr, V, Nb, Ti, Zr, Zn, Cd, Y, La, Ce, B, Al, Tl, Sn, Mg, Ca, Sr, Ba, Li, Na, K, Rb and Cs; O represents an oxygen atom; a, b, c and x represent the numbers of atoms of W, X, Y and O, respectively; provided, however, the proportions of a, b and c are such that when a=12, b=0.5 to 10 and c=0 to 15; x represents a numerical value determined by the oxidized states of the elements other than oxygen.