| 摘要 |
A process for producing a titanium-containing silicon oxide catalyst satisfying the following conditions, which comprises the following steps: (1): an average pore diameter of 10 Å or more, (2): a pore diameter of 90% or more of the total pore volume of 5 to 200 Å, (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 the 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 a template by mixing and stirring a silica source, a titanium source and a template in liquid phase, second step: a step of drying the solid obtained in the first step under a condition of a temperature of 120° C. or less, and third step: a step of removing the template by subjecting the solid dried in the second step to solvent extraction.
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