INVESTIGADORES
BRIAND Laura Estefania
artículos
Título:
Optimization of the Operative Conditions for Heteropolyacids Synthesis Through Ion Exchange
Autor/es:
SILVANA R. MATKOVIC; GRACIELA M. VALLE; LAURA E. BRIAND
Revista:
MATERIALS RESEARCH
Editorial:
UNIV FED SAO CARLOS
Referencias:
Año: 2005 vol. 5 p. 351 - 355
ISSN:
1516-1439
Resumen:
Phospho-tungstic and phospho-molybdic Wells-Dawson heteropolyacids were synthesized through ion exchange with a highr yield (90%) than the conventional organic route (70%).Pure non-degraded heteropolyacids are obtained when the corresponding ammonium salt is kept in contact with an acid resin up to three days. the use of an organic media instead of an aqueous media greatly favors the completeness of the exchange.
