Patent ID: 6887823

Claim:
A process for producing a titanium-containing silicon oxide catalyst satisfying all of the following conditions (1) to (4), which comprises the following first to third steps: (1): an average pore diameter of 10 â„« or more, (2): a pore diameter of 90% or more of the total pore volume of 5 to 200 â„«, (3): a specific pore volume of 0.2 cm 3 /g or more, and (4): a quaternary ammonium ion represented by the following general formula (I) is used as a template and then the template is removed by solvent extraction, [NR 1 R 2 R 3 R 4 ] + (I) (wherein, R 1 represents a linear or branched hydrocarbon group having 2 to 36 carbon atoms, and R 2 to R 4 represent an alkyl group having 1 to 6 carbon atoms); first step: a step for obtaining a solid containing a catalyst component and the template by mixing and stirring a silica source, a titanium source, and as the template, a quaternary ammonium ion, second step: a step of drying the solid obtained in the first step under a condition of a temperature of 120Â° C. or less, and third step: a step of removing the template by subjecting the solid dried in the second step to solvent extraction.