Microwave Synthesis of Cadmium and Zinc Tungstates
| Autor: | K. A. Kudin, A. G. Mamalis, V. V. Starikov, P. V. Matejchenko, A. Yu. Voloshko, S. N. Lavrynenko, V. N. Baymer, D. S. Sofronov, E. M. Sofronova |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Ammonium paratungstate
Cadmium Materials science Mechanical Engineering Thermal decomposition Inorganic chemistry chemistry.chemical_element Zinc chemistry.chemical_compound chemistry Tungstate Mechanics of Materials Scheelite Cadmium tungstate Melting point General Materials Science Nuclear chemistry |
| Zdroj: | Journal of Materials Engineering and Performance. 21:2323-2327 |
| ISSN: | 1544-1024 1059-9495 |
| DOI: | 10.1007/s11665-012-0200-9 |
| Popis: | The possibility of zinc and cadmium tungstate synthesis by reaction of metal nitrates with ammonium paratungstate by microwave irradiation is studied. Formation of the metal tungstate begins in a liquid phase at the melting point of initial hydrates and is completed at their complete decomposition temperature, at 400-450°C. The microwave activation does not have influence on the mechanism of cadmium and zinc tungstate synthesis, but it considerably accelerates it. It is shown that, during the microwave activation, cadmium tungstate, with scheelite structure (a = 5.170 A, c = 11.140 A), is formed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink