| 摘要 |
Provided is a method for producing an MTW-type zeolite without using a structure stabilizer and at low cost. That is, there is provided a method for producing an MTW-type zeolite by reacting a reaction mixture containing a silica source, an alumina source, an alkali source and water with a zeolite seed crystal. As the reaction mixture, a reaction mixture having a composition in which when a zeolite is synthesized from the reaction mixture alone, the synthesized zeolite contains an MFI-type zeolite is used. As the seed crystal, a beta-type zeolite in which the SiO2/Al2O3 ratio is 8-50 and which does not contain a structure stabilizer is used. The seed crystal is added to the reaction mixture in a ratio of 0.1-20 mass% with respect to the silica component in the reaction mixture, and the reaction mixture to which the seed crystal is added is sealed and heated at 100-200°C. |
