The Influence of Agitation Speed on the Morphology and Size Particle Synthesis of Zr(HPO<sub>4</sub>)<sub>2</sub>·H<sub>2</sub>O from Mexican Sand
- 1 Departamento de Química,Instituto Nacional de Investigaciones Nucleares, MEXICO Carretera México-Toluca km. 36.5, Apartado Postal 18-1027,11801 México D. F., México.
- 2 Departamento de Química,Instituto Nacional de Investigaciones Nucleares, MEXICO Carretera México-Toluca km. 36.5, Apartado Postal 18-1027,11801 México D. F., México.
- 3 Departamento de Química,Instituto Nacional de Investigaciones Nucleares, MEXICO Carretera México-Toluca km. 36.5, Apartado Postal 18-1027,11801 México D. F., México.
- 4 Departamento de Química,Instituto Nacional de Investigaciones Nucleares, MEXICO Carretera México-Toluca km. 36.5, Apartado Postal 18-1027,11801 México D. F., México.
Abstract
Mexican zirconium sand has been envisaged like a source of zirconium compounds. The main product obtained is zircon (ZrSiO 4 ), which has a high raw material value. During a mineralogical purification sand process with hydrofluoric acid, a liquor was obtained as the by product. This liquor was dripped over hot phosphoric acid to obtain zirconium hydrogen phosphate Zr(HPO 4 ) 2 ·H 2 O (α-ZP) which has taken considerably attention due to its wide application. Both products zircon and α-ZP were analyzed as for structure and purity using analytic techniques. X-Ray diffraction revealed that zircon and α-ZP were polycrystalline materials. Scanning Electron Microscopy indicated that α-ZP formed particles and aggregates in different shapes and size distributions depending on the condensing way and the agitation speed. Furthermore, thermogravimetric analysis demonstrated that the α-ZP phases present different hydrated levels. FTIR spectra were obtained to identify the corresponding PO stretching vibration from the α-ZP and the specific surface areas were calculated by BET method.
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