Layered and pillared metal(IV) phosphates and phosphonates

Properties of both amorphous and crystalline salts of tetravalent metals are reviewed, with special emphasis on the much studied salt of zirconium phosphate. The discussion includes: (1) method of preparation, (2) interlayered crystal structure, (3) effect of counter ions on interlayer distance and steric hindrance, (4) mechanism of ion exchange, and (5) the interaction of polar molecules. Other insoluble acid salts with a layered structure include the phosphates of titanium, hafnium, germanium, tin, lead, and the arsenates of titanium, zirconium, and tin. Fibrous precipitates of the insoluble acid salts of cesium and thorium phosphate are mentioned briefly. Under appropriate experimental conditions, insoluble acid of unknown structure can be obtained. Investigations of their crystalline structure may be highly desirable. The ion exchange capacities of many of these substances are evaluated. 80 references, 3 tables, 4 figures.

Syntheses, crystalline structure, and ion-exchange properties of insoluble acid salts of tetravalent metals and their salt forms

http://www.rsc.org/suppdata/cc/c2/c2cc16218k/c2cc16218k.pdf

Zirconium phosphate nano-platelets: a novel platform for drug delivery in cancer therapy

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Crystalline insoluble acid salts of tetravalent metals—XXIII: Preparation and main ion exchange properties of highly hydrated zirconium bis monohydrogen orthophosphates☆

J.S. Gill

Papers

Crystalline insoluble acid salts of tetravalent metals—XXIII: Preparation and main ion exchange properties of highly hydrated zirconium bis monohydrogen orthophosphates☆

Crystalline insoluble acid salts of tetravalent metals