Optimization of the operative conditions for heteropolyacids synthesis through ion exchange
Phospho-tungstic and phospho-molybdic Wells-Dawson heteropolyacids, H<SUB>6</SUB>P<SUB>2</SUB>W<SUB>18</SUB>O<SUB>62</SUB>.xH<SUB>2</SUB>O and H<SUB>6</SUB>P<SUB>2</SUB>Mo<SUB>18</SUB>O<SUB>62</S...
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Formato: | Articulo |
Lenguaje: | Inglés |
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2005
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Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/36938 http://www.scielo.br/pdf/mr/v8n3/26050.pdf |
Aporte de: |
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I19-R120-10915-36938 |
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dspace |
institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Ciencias Exactas Química Heteropolyacid ammonium compounds ion exchange HPA POM optimization Wells-Dawson phosphorus compounds solutions synthesis organic acids |
spellingShingle |
Ciencias Exactas Química Heteropolyacid ammonium compounds ion exchange HPA POM optimization Wells-Dawson phosphorus compounds solutions synthesis organic acids Matkovic, Silvana R. Valle, Graciela M. Briand, Laura Estefanía Optimization of the operative conditions for heteropolyacids synthesis through ion exchange |
topic_facet |
Ciencias Exactas Química Heteropolyacid ammonium compounds ion exchange HPA POM optimization Wells-Dawson phosphorus compounds solutions synthesis organic acids |
description |
Phospho-tungstic and phospho-molybdic Wells-Dawson heteropolyacids, H<SUB>6</SUB>P<SUB>2</SUB>W<SUB>18</SUB>O<SUB>62</SUB>.xH<SUB>2</SUB>O and H<SUB>6</SUB>P<SUB>2</SUB>Mo<SUB>18</SUB>O<SUB>62</SUB>.xH<SUB>2</SUB>O 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 [(NH<SUB>4</SUB>)<SUB> 6</SUB>P<SUB>2</SUB>W<SUB>18</SUB>O<SUB>62</SUB>.13H<SUB>2</SUB>O or (NH<SUB>4</SUB>)<SUB>6</SUB>P<SUB>2</SUB>Mo<SUB>18</SUB>O<SUB>62</SUB>.12H<SUB>2</SUB>O] 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. |
format |
Articulo Articulo |
author |
Matkovic, Silvana R. Valle, Graciela M. Briand, Laura Estefanía |
author_facet |
Matkovic, Silvana R. Valle, Graciela M. Briand, Laura Estefanía |
author_sort |
Matkovic, Silvana R. |
title |
Optimization of the operative conditions for heteropolyacids synthesis through ion exchange |
title_short |
Optimization of the operative conditions for heteropolyacids synthesis through ion exchange |
title_full |
Optimization of the operative conditions for heteropolyacids synthesis through ion exchange |
title_fullStr |
Optimization of the operative conditions for heteropolyacids synthesis through ion exchange |
title_full_unstemmed |
Optimization of the operative conditions for heteropolyacids synthesis through ion exchange |
title_sort |
optimization of the operative conditions for heteropolyacids synthesis through ion exchange |
publishDate |
2005 |
url |
http://sedici.unlp.edu.ar/handle/10915/36938 http://www.scielo.br/pdf/mr/v8n3/26050.pdf |
work_keys_str_mv |
AT matkovicsilvanar optimizationoftheoperativeconditionsforheteropolyacidssynthesisthroughionexchange AT vallegracielam optimizationoftheoperativeconditionsforheteropolyacidssynthesisthroughionexchange AT briandlauraestefania optimizationoftheoperativeconditionsforheteropolyacidssynthesisthroughionexchange |
bdutipo_str |
Repositorios |
_version_ |
1764820472336220161 |