On aluminum phosphate solubility in acid solutions at high pressures

I.Grozescu, I.Muscutariu, D.Irimia, N.Pricopi, M.Barzescu*, D.Tomuta**

National Institute of Research and Development for Electrochemistry and Condensed Matter, Timisoara, 1 Tarnava Str., 1900 Timisoara, Romania
*Polytechnic Institute of Timisoara, B-dul Parvan 2, 1900 Timisoara, Romania
**National Institute of Research and Development for Material Physics, Atomistilor Str., Bucharest, Romania

Received January 19, 1998, in final form May 27, 1998

The main dependencies of aluminum phosphate solubility in acid solutions at pressures from 4 up to 10 MPa and temperatures from 423 K up to 543 K have been presented. The optimum solvent for single-crystal aluminum phosphate is the solution containing 85% H2SO4 and 15% HCl concentrations of both acids being 7.68 M. High values solubility are obtained for pressures of 10 MPa. Our researches are useful for determining the physical conditions that are essential for the formation of aluminum phosphate single crystals in lab conditions.

Previous | Contents | Next