Patent ID: 8772564

Claim:
A method of producing a synthetic zeolite catalyst by coating MFI type zeolite having a primary particle size of not more than 100 μm with a monocrystalline silicate, wherein the MFI type zeolite is subjected to a coating treatment in which the MFI type zeolite is immersed into an aqueous solution obtained by mixing a structure defining agent and a silica material having an average particle size of not less than 10 nm but less than 1.0 μm so as to satisfy X×Y<0.05 (wherein X is a concentration of the silica material (mol %) and Y is a concentration of the structure defining agent (mol %)), then subjected to a hydrothermal treatment at a temperature of 120° C. to 250° C. for 0.5 hour to 48 hours and further fired.