Zeolite

---

Zeolites are microporous, aluminosilicate minerals commonly used as commercial adsorbents and catalysts. The term zeolite was originally coined in 1756 by Swedish mineralogist Axel Fredrik Cronstedt, who observed that upon rapidly heating the material stilbite, it produced large amounts of steam from water that had been adsorbed by the material.

Structures of Zeolites

structures of zeolites are based on three-dimensional frameworks of silica and alumina tetrahedra, that is, silicon or aluminum ions surrounded by four oxygen ions in a tetrahedral configuration.

Each oxygen is bonded to two adjacent silicon or aluminum ions, linking them together. Clusters of tetrahedra form boxlike polyhedral units that are further linked to build up the entire framework.

Lime-Soda

A mixture of sodium hydroxide and slaked lime used especially to absorb moisture and gases.It is used in granular form in closed breathing environments, such as general an aesthesia,submarines, rebreathers and recompression chambers, to remove carbon dioxide from breathing gases to prevent CO2 retention and carbon dioxide poisoning.

Components of chemical

Calcium hydroxide,

Water,

Sodium hydroxide,

Potassium hydroxide

---

Go to index page

---