Zeolite

Zeolites are microporous, aluminosilicate minerals commonly used as commercial adsorbents.
Zeolites are widely used in industry for water purification, as catalysts, and in nuclear reprocessing.

Synthetic zeolite structure

Synthetic zeolites hold some key advantages over their natural analogs. The synthetics can, of course, be manufactured in a uniform, phase-pure state. It is also possible to manufacture desirable zeolite structures which do not appear in nature. Zeolite A is a well-known example.