各种分子筛的分类及命名依据？ zeolite structures are designated by a 3 capital letter code according to rulesset by the commission of the international zeolite association (iza). for instance,fau stands for the faujasite structure to which the well-known x and y zeolitesbelong. the 5th edition of the atlas of zeolite framework types, recently published by iza (8), describes 133 zeolite structures. regular updates are found on the website of the iza. a very useful short notation is used for the description of the pore system(s), each porous network is characterized by the channel direction, the number of atoms (in bold type) in the apertures, the crystallographic free diameter of the aperture (in a), the number of asterisks indicating whether the system is one-, two- or three- dimensional. however, this short notation does not indicate whether the pore system is made of interconnected cages or uniform channels. the iza coding of the pore systems of some commercially available zeolites is given in， 查看更多
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