Porous frameworks can be treated more than imagined: Recent advances on post-synthetic modification of zeolites by hydrothermal treatment with the aid of pore-filler stabilization

Abstract

The ability to freely control the performance of ceramics through post-synthetic treatment would be a seed of innovation for various applications. Zeolites, a class of porous ceramics, have regular pores of molecular size and are used as catalysts, adsorbents, and ion exchangers. The control of zeolite composition and pore characteristics by post-synthetic treatments such as steaming has been known, but is still under development, including for target zeolites, more simple methods, achievement of uncharted properties, and so on. In this review, the concept of ‘pore-filler stabilization’ has been developed and utilized to achieve high performance in zeolites, which was previously thought to be impossible.