Structural changes in -LIT zeolites related to cation-exchange treatments under aqueous and non-aqueous conditions

- A remarkable change in -LIT structure was obtained through ion-exchange treatments.
- The ion-exchanged samples were categorized into type-A and type-B structures.
- The zeolitic micropores in type-B structure became more accessible.
- Adsorption of water into the micropores increased in type-B as compared to type-A.
- Type-B structure could be changed to type-A by K-ethoxide treatment.