Zeolites catalyze some reactions in their molecular‐sized pores, but large molecules can react only on their external surface. Zeolite‐nanosheets (NSs) have been developed as catalysts for large molecules. The previously reported methods to synthesize zeolite‐NSs are specialized for each zeolite type. Here we propose a new method to synthesize various zeolite‐NSs from the same amorphous aluminosilicate NSs (AAS‐NSs) as a universal precursor. We successfully synthesized the unprecedented AAS‐NSs in the hydrophilic space of the stable hyperswollen lyotropic lamellar (HL) phase. The four zeolite types could be obtained from the single‐species AAS‐NSs. These results imply that this method enables us to synthesize almost all types of zeolite‐NSs. Moreover, the synthesized CHA‐NSs have great potential for various applications because of their thickness and large external surface area.

We previously reported the permselectivities, microstructure, and permeation mechanisms of ionic silsesquioxanebased membranes, which are a class of chemically stabilized ionic liquid (IL) membranes, prepared from ionic trialkoxysilanes (i.e., silylated ILs (T-type)) via the sol-gel method. These membranes comprise dense IL regions and Si-O-Si network-derived micropores, and their permeation characteristics depended on the two permeation pathways. Establishing a method for control the permeation characteristics of silylated IL-derived membranes is important for application expansion. Therefore, in this study, an ionic dialkoxysilane (i.e., silylated IL (D-type))-derived membrane was developed, and the e ects of the Si-O-Si network structure on its permeation characteristics are discussed. Attenuated total re ectance infrared spectroscopy, N 2 adsorption, and nanopermporometry characterizations revealed that the structure of the newly developed membrane was consistent with the Si-O-Si linear structures and Si-O-Si rings, but not the Si-O-Si network-derived micropores. Both membranes showed selective methanol permeation against H 2 at temperatures up to 473 K, but the calculation of the activation energy for methanol permeation clearly suggested that the IL-like properties of ionic dialkoxysilane-based membranes were better than those of the ionic silsesquioxane-based membranes with respect to methanol permeation.

We propose a visual detection method using a hyperswollen lamellar phase without electric amplification. Amphiphiles with an oligo(ethylene glycol) chain can catch alkali and alkaline earth metal ions and amplify to macroscopic birefringence.

Zeolites catalyze some reactions in their molecular-sized pores, but large molecules can react only on their external surface. Zeolite-nanosheets (NSs) have been developed as catalysts for large molecules. The previously reported methods to synthesize zeolite-NSs are specialized for each zeolite type. Here we propose a new method to synthesize various zeolite-NSs from the same amorphous aluminosilicate NSs (AAS-NSs) as a universal precursor. We successfully synthesized the unprecedented AAS-NSs in the hydrophilic space of the stable hyperswollen lyotropic lamellar (HL) phase. The four zeolite types could be obtained from the single-species AAS-NSs. These results imply that this method enables us to synthesize almost all types of zeolite-NSs. Moreover, the synthesized CHA-NSs have great potential for various applications because of their thickness and large external surface area.