Method for producing MTW-type zeolite

1. A method for producing a MTW-type zeolite, comprising:

providing a reaction mixture containing a silica source, an alumina source, an alkali source, and water with a seed crystal of a zeolite, wherein the reaction mixture does not contain a structure directing agent; wherein the seed crystal is added to the reaction mixture in a proportion of 0.1% by mass to 20% by mass based on a silica component in the reaction mixture; and

heating the reaction mixture at 100° C. to 200° C. in a sealed state,

wherein without the seed crystal, the reaction mixture produces a MFI-type zeolite, and

wherein the seed crystal is a beta-type zeolite that has a molar ratio of SiO 2 /Al 2 O 3 of 8 to 50 and does not contain a structure directing agent.

2. The method according to claim 1 ,

wherein the reaction mixture has a composition represented by the following molar ratio;

SiO 2 /Al 2 O 3 =10 to 150

Na 2 O/SiO 2 =0.075 to 0.23

H 2 O/SiO 2 =5 to 50.

3. The method according to claim 2 ,

wherein the reaction mixture has a composition represented by the following molar ratio:

SiO 2 /Al 2 O 3 =30 to 120

Na 2 O/SiO 2 =0.1 to 0.2

H 2 O/SiO 2 =8 to 20.

4. The method according to claim 1 ,

wherein the reaction mixture to which the seed crystal has been added is heated at 120° C. to 180° C. in a sealed state.

5. The method according to claim 1 ,

wherein the reaction mixture is matured at 20° C. to 100° C. before being heated.

6. The method according to claim 1 ,

wherein the reaction mixture is stirred during heating in a sealed state.