Optimization of the operative conditions for heteropolyacids synthesis through ion exchange
Phospho-tungstic and phospho-molybdic Wells-Dawson heteropolyacids, H 6P2W18O62.xH2O and H 6P2Mo18O62.xH2O respectively, were synthesized through ion exchange with a higher yield (∼ 90%) than the conventional organic route (∼ 70%). Pure, non-degraded heteropolyacids are obtained when the correspondi...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2005 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/55680 |
| Acceso en línea: | http://hdl.handle.net/11336/55680 |
| Access Level: | acceso abierto |
| Palabra clave: | HETEROPOLYACID HPA POM WELLS-DAWSON https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| Sumario: | Phospho-tungstic and phospho-molybdic Wells-Dawson heteropolyacids, H 6P2W18O62.xH2O and H 6P2Mo18O62.xH2O respectively, were synthesized through ion exchange with a higher yield (∼ 90%) than the conventional organic route (∼ 70%). Pure, non-degraded heteropolyacids are obtained when the corresponding ammonium salt [(NH4) 6P2W18O62.13H2O or (NH4)6P2Mo18O62.12 H2O] is kept in contact with an acid resin [about (1:0.8) salt:resin weight ratio] up to three days. The use of an organic media instead of an aqueous media greatly favors the completeness of the exchange. |
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