(redirected from Zeolites)
Also found in: Thesaurus, Medical, Encyclopedia.


Any one of a family of hydrous alkali-aluminum silicate minerals, whose crystal lattice may enclose or sequester cations of sodium, potassium, magnesium, calcium, strontium, or barium, or a corresponding synthetic compound, used chiefly as molecular filters and ion-exchange agents.

[Swedish zeolit, from Greek zein, to boil (from its swelling and boiling under the blowpipe); see yes- in Indo-European roots.]


1. (Minerals) any of a large group of glassy secondary minerals consisting of hydrated aluminium silicates of calcium, sodium, or potassium: formed in cavities in lava flows and plutonic rocks
2. (Chemistry) any of a class of similar synthetic materials used in ion exchange and as selective absorbents. See molecular sieve
[c18: zeo-, from Greek zein to boil + -lite; from the swelling up that occurs under the blowpipe]
zeolitic adj


(ˈzi əˌlaɪt)

any of a group of hydrated aluminosilicate minerals, used as molecular sieves.
[1770–80; < Greek ze(în) to boil + -o- + -lite]
ze`o•lit′ic (-ˈlɪt ɪk) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.zeolite - any of a family of glassy minerals analogous to feldspar containing hydrated aluminum silicates of calcium or sodium or potassium; formed in cavities in lava flows and in plutonic rocks
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
water softener - a substance (such as sodium chloride) that lessens the hardness of water by replacing calcium and magnesium ions with sodium ions and so gives the water more efficient sudsing power
chabasite, chabazite - a group of minerals of the zeolite family consisting of a hydrous silicate of calcium and aluminum
heulandite - a group of minerals of the zeolite family consisting of a hydrous aluminum silicate of sodium and calcium
natrolite - a group of minerals of the zeolite family consisting of a hydrous silicate of sodium and aluminum
phillipsite - a group of white or reddish crystalline minerals of the zeolite family consisting of a hydrous silicate of calcium and potassium and aluminum
References in periodicals archive ?
Zeolites have been the focus of researchers, oil refineries, and environmental protection agencies as they have the ability to catalyze many important chemical reactions such as alkylation, isomerization, cracking, petrochemical catalytic reactions, and green environmental friendly reactions at much controlled and better rates and at optimum reaction conditions [4].
BASF invests in another production plant for specialty zeolites at its Ludwigshafen, Germany, headquarters site.
Zeolites are defined as a mineral group characterized by a three-dimensional linked tetrahedral framework, each composed of four oxygen atoms surrounding a cation, conferring particular characteristics (COOMBS et al.
The six-day event focused on "Zeolites for a Sustainable World", with the aim of exploring novel means of using zeolites to reduce environmental pollutants.
Recently, heteroatomic zeolites have been used to prepare inorganic membrane or mixed matrix membranes (MMMs) for pervaporation.
Natural zeolites are a group of hydrated aluminosilicates of the alkali or alkaline earth metals (Na, K, Mg, Ca), with a porous and highly differentiated structure containing voids filled with ions and water molecules having a high freedom of movement.
Zeolites are a group of hydrated aluminum silicates, which are abundantly available in nature.
The ability of zeolites to sorb selectively is widely used in different groups of science and engineering.
Diagrams cover their structural features while the chemistry and taxonomy of the entire group is explored, along with discussions of the kinds of environments where zeolites are formed.
Diffusion of a variety of solvents, gases, and ions and conduction of ions in various zeolites are discussed in a continuous sequence of numbered paragraphs, with each paragraph summarizing the methods and results of a single study followed by a full citation.