Sodium zeolites

The solid-state interaction between Y-type zeolites and niobium oxide (Nb205) is strongly dependent on the form of the parent zeolite (sodium, hydrogen or dealuminated forms) and on the conditions of the high temperature treatment. 

Builders Zeolite, sodium tri-phosphate, Na citrate, Na silicate, Na carbonate/Na bicarbonate 40-65 40-55 30-55 30-50 40-55... 

Zeolites (sodium aluminosilicates) are the most well-known naturally occurring inorganic ion-exchangers. The first inorganic synthetic exchangers were the alkali metal aluminosilicates used in water softening. 

Molecular sieves are types of adsorbents composed of crystalline zeolites (sodium and calcium aluminosilicates). By heating them, water of hydration is removed, leaving holes of molecular dimensions in the crystal lattices. These holes are of uniform size and allow the passage into the crystals of small molecules, but not of large ones. 

The monomer-loaded zeolite samples display dramatic color changes from white to different hues of blue and green when (a) aniline in different acidic zeolite forms is treated with the oxidant, or when (b) pyrrole or thiophene monomers are admitted into Cu(II)/Fe(III)-containing zeolites Y or MOR from the vapor phase or from hexane (or other hydrocarbon) solutions (Table 1). These color changes correspond to those observed in bulk synthesis reactions.H l No reaction is observed with the zeolite sodium forms, indicating that the polymerizations proceed only in the presence of intfazeolite protons and/or appropriate oxidants. No polymer formation is detected in zeolite Cu(II)A (pore size 0.4 nm, smaller than pyrrole or thiophene). This is... 

Christophliemk, P, Wust, W., Koch, O., Carduck, F. 1., Peters, B. W., Vogler, R. 1981. Process for the preparation of very fine zeolitic sodium aluminium silicates. EP0037018. Degussa, Henkel KGAA. 

Chem. Descrip. Zeolite, sodium aluminosilicate hydrate... 

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