Ultramarine is the aluminosilicate zeolite with a sodalite structure. Typical adsorbents are activated carbon, silica gel, alumina, resin and zeolite. Then a liquid phase process was introduced using zeolite catalysts. Methanol can be converted to olefins using zeolite and SAPO-based heterogeneous catalysts. The methanol reacts in the presence of a zeolite catalyst to form alkanes. Powerful fans could push air through reactors of zeolite and catalysts to absorb the methane. These conversions can be performed with zeolite catalysts. Thomsonite is the name of a series of tecto-silicate minerals of the zeolite group. Heulandite is the name of a series of tecto-silicate minerals of the zeolite group. The antenna is fabricated by inserting dye molecules into the channels of zeolite L. It is a medium pore zeolite with channels defined by ten-membered rings. This amounted to 1.44 million metric tons per year of anhydrous zeolite A in 1992. Another method devised is by contacting lactic acid with a zeolite. Natrolite is a tectosilicate mineral species belonging to the zeolite group. One of the important processes used to carry out zeolite synthesis is sol-gel processing.