Introduction of REUSY series zeolite: Knowledge about the crystal structure of zeolite!

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The crystal structure of zeolite can be divided into three components: aluminosilicate framework, pores and voids containing exchangeable cation M in the framework, and water molecules in the latent phase, that is, zeolite water. Follow the editor of REUSY series zeolite to learn more about it!
The structure of zeolite is somewhat different from that of quartz and feldspar. The framework structure of quartz and feldspar is relatively tight, with a specific gravity of 2.6 to 2.7, while the framework structure of zeolite is relatively empty, with a specific gravity of 2.0 to 2.2. The cavity after dehydration can be as large as 47%, such as chabazite, or even 50%, such as synthetic zeolite.
In the feldspar structure, the metal cations are confined in the voids of the crystal framework composed of O ions. Unless the crystal is destroyed, it is difficult for these metal cations to move freely.
In the feldspar-like structure, the metal cations are located in relatively open interconnected voids, with a specific gravity of 2.14 to 2.45. The cations can exchange with each other through the structured pathways without destroying the crystal framework. Sodalite and hydroceinite were once considered to be minerals of the zeolite group.
In the zeolite structure, the metal cations are located in the pores or cavities with larger crystal structures and interconnected. Therefore, cations can freely exchange through the pores without affecting the crystal framework. Exchanges such as 2(Na,K)(Ca2+) are easy to occur in zeolite, but not in feldspar. This form of exchange may be an extreme form of ion exchange and is limited to zeolite and similar minerals.
The connection between water molecules of zeolite and framework ions and exchangeable metal cations is generally relaxed and weak. These water molecules can move and enter and exit the pores more freely than cations. Under the tendency of heat, it can be freely detached and attached without affecting its skeleton structure.
The above is the introduction of REUSY series zeolite editor: knowledge about the crystal structure of zeolite.