分子筛molecular sieve 多孔性的铝酸盐结晶，有天然的，...

分子筛molecular sieve 多孔性的铝酸盐结晶，有天然的，如泡沸石，也有以Al2O3与SiO2为基料人工合成的。具有骨架结构的碱金属或碱土金属的硅铝酸盐晶体。Porous aluminate crystals, either natural, such as bubble zeolite, or synthetic, based on Al2O3 and SiO2. Silicate aluminate crystals of alkali or alkaline earth metals having a skeleton structure. 分子筛的晶体结构中有大量空腔，这些空腔由规则而均匀的其孔径为分子大小的通道相互联结着，因此能将大小不同的分子分离，是一种高效、高选择性的固体吸附剂。There are a large number of cavities in the crystal structure of molecular sieve, which are connected by regular and uniform channels with pore size of molecules, so it is an efficient and highly selective solid adsorbent that can separate molecules of different sizes.