Abstract
In this study, dense bulks of Y‐zeolite and mesoporous silica with significantly high specific surface areas were successfully synthesized by a hydrothermal hot pressing method to apply as a membrane filter media for the separation of CO2 or H2. Obtained Y‐zeolite bulks possessed the highly dense microstructure without pinhole, pores, and amorphous layer between zeolite grains. Mesoporous silica bulks had also dense microstructure and extremely high specific surface area over 1000 m2/g. The synthesis parameters for densification of Y‐zeolite and mesoporous silica by hydrothermal hot pressing treatments were examined. Their some properties and microstructures were evaluated.
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