“沸石分子筛及催化”专刊前言（英文）

<正>Zeolites are crystalline microporous materials with regular channels and cages of molecular size.Due to their unique structures and acidic properties,they have been widely used in the petrochemical and chemical industries since the late 1950s.Zeolites have been used as catalysts,for instance,in fluid catalytic cracking and hydrocracking.Faujasites were the first molecular sieves applied for cata-