To provide a method for producing an MTW-type zeolite without using a structure-directing agent and at low cost.
The method for producing an MTW-type zeolite includes 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 is used having a composition in which when a zeolite is synthesized from the reaction mixture alone, the synthesized zeolite contains an MFI-type zeolite. As the seed crystal, a β-type zeolite is used in which the SiO2/Al2O3 ratio is 8-50 and which does not contain a structure-directing agent. 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.
KAMIMURA YOSHIHIRO
OKUBO TATSUYA
UNIV TOKYO
JPN6012054769; 上村佳大他: '種結晶添加法によるＯＳＤＡ-ｆｒｅｅ ＭＴＷ型ゼオライトの合成とその特性' 第２６回ゼオライト研究発表会 講演予稿集 , 2010, ｐ． １９
Yoshiyuki Matsushima