Zirconium phosphate ion exchange resins

Zinc hydrides, 931 Zinc naphthalocyanine preparation, 993 Zinc pseudohalides, 981 solid state, 985 Zirconium phosphate ion exchange resins, 720... 

Zirconium phosphate ion exchange resin (Ionite 3) (H+, Na+ or K+ form) absorbs uraniumvi salts and gives an intense yellow fluorescence under u.v. light. This behavior is used as the basis of a sensitive spot test for uranium. ... 

We discuss crystalline inorganic ion exchangers, such as [97,98,104,134-146] zeolites, hydrotal-cites, alkali metal titanates, titanium silicates, and zirconium phosphates, and also organic ionic exchangers such as the ion-exchange resins. However, details are given only in the case of the archetypal crystalline ionic exchangers, that is, aluminosilicate zeolites [97,98,104,134]. 

These zirconium phosphate materials are being developed as replacements for ion exchange resin catalysts. The arylsulfonic acid MELS have been evaluated for butene isomerization, methanol dehydration, MTBE synthesis as well as cracking, and for the alkylation of aromatics. In the synthesis of MTBE this catalyst appears to out-perform the ion exchange resins, Amberlyst 15. 

The yields were 62-89%. The ion-exchange resin and the zirconium phosphate were washed with hazardous methylene chloride to recover the products. The catalyst could be reused with little loss in activity. 

Phenol-formaldehyde resin Sodium sulfate Zirconium phosphate acid form ion exchange columns Ammonium phosphomolybdate ion exchange material Cellulose... 

The term "intercalation" should be reserved for the incorporation of neutral species between the layers and the term "ion exchange" when there is a one for one exchange of species based on charge. The ion exchange capacity (EEC) of smectite clays ranges from about 0.5 to 1.5 meq/g. These capacities are low in comparison with those of sulfonated styrene-divinylbenzene resins (EEC 5 meq/g) or a-zirconium phosphate, Zr(HP04)2 H20 (6.6 meq/g) (13), Given the fact that the interlamellar... 

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