zeolite
Sign in to save350px|thumb|Frameworks of LTA-type (left) and FAU-type zeolites (right) Zeolites are a group of several microporous, crystalline aluminosilicate minerals commonly used as commercial adsorbents and catalysts. They mainly consist of silicon, aluminium, and oxygen, and have the general formula ･y where is either a metal ion or H+.
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Zeolites are microporous, crystalline minerals made primarily of silicon, aluminum, and oxygen that are widely used in industry as adsorbents (materials that capture substances on their surface) and catalysts (materials that speed up chemical reactions). Their usefulness comes from their porous structure, which allows them to trap molecules and facilitate chemical processes in commercial applications.
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Article
27 sectionsContents
- Production
- Characteristics
- Properties
- Framework structure
- Isomorphous replacement
- Porosity
- Natural occurrence
- Ore mining
- Synthesis
- Applications
- Ion-exchange, water purification and softening
- Catalysis
- Nuclear waste reprocessing
- Gas separation and storage
- Solar energy storage and use
- Building materials
- Niche uses
- Hemostatic agent
- Soil treatment
- Veterinary and human use
- Mineral species
- Computational study
- Safety
- See also
- References
- Further reading
- External links
350px|thumb|Frameworks of LTA-type (left) and FAU-type zeolites (right) Zeolites are a group of several microporous, crystalline aluminosilicate minerals commonly used as commercial adsorbents and catalysts. They mainly consist of silicon, aluminium, and oxygen, and have the general formula ･y where is either a metal ion or H+.
The term was originally coined in 1756 by Swedish mineralogist Axel Fredrik Cronstedt, who observed that rapidly heating a material, believed to have been stilbite, produced large amounts of steam from water that had been adsorbed by the material. Based on this, he called the material zeolith (changed later to zeolite in English, to fit the naming scheme for minerals in -ite) from the Greek , meaning "to boil" and , meaning "stone".