Optimization of the operative conditions for heteropolyacids synthesis through ion exchange
Phospho-tungstic and phospho-molybdic Wells-Dawson heteropolyacids, H6P2W18O62 .xH2O and H6P2Mo18O62 .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...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2005-09-01
|
| Series: | Materials Research |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392005000300022 |
| _version_ | 1818950016556859392 |
|---|---|
| author | Silvana Raquel Matkovic Graciela Manuela Valle Laura Estefania Briand |
| author_facet | Silvana Raquel Matkovic Graciela Manuela Valle Laura Estefania Briand |
| author_sort | Silvana Raquel Matkovic |
| collection | DOAJ |
| description | Phospho-tungstic and phospho-molybdic Wells-Dawson heteropolyacids, H6P2W18O62 .xH2O and H6P2Mo18O62 .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)6P2W18 O62.13H2O or (NH4)6P2Mo18 O62.12H2O] 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. |
| first_indexed | 2024-12-20T09:11:53Z |
| format | Article |
| id | doaj.art-95e4c516ea2448e38d8563c99c5ad3d4 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-12-20T09:11:53Z |
| publishDate | 2005-09-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-95e4c516ea2448e38d8563c99c5ad3d42022-12-21T19:45:32ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392005-09-018335135510.1590/S1516-14392005000300022Optimization of the operative conditions for heteropolyacids synthesis through ion exchangeSilvana Raquel MatkovicGraciela Manuela ValleLaura Estefania BriandPhospho-tungstic and phospho-molybdic Wells-Dawson heteropolyacids, H6P2W18O62 .xH2O and H6P2Mo18O62 .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)6P2W18 O62.13H2O or (NH4)6P2Mo18 O62.12H2O] 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392005000300022Wells-DawsonheteropolyacidPOMHPA |
| spellingShingle | Silvana Raquel Matkovic Graciela Manuela Valle Laura Estefania Briand Optimization of the operative conditions for heteropolyacids synthesis through ion exchange Materials Research Wells-Dawson heteropolyacid POM HPA |
| title | 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_short | Optimization of the operative conditions for heteropolyacids synthesis through ion exchange |
| title_sort | optimization of the operative conditions for heteropolyacids synthesis through ion exchange |
| topic | Wells-Dawson heteropolyacid POM HPA |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392005000300022 |
| work_keys_str_mv | AT silvanaraquelmatkovic optimizationoftheoperativeconditionsforheteropolyacidssynthesisthroughionexchange AT gracielamanuelavalle optimizationoftheoperativeconditionsforheteropolyacidssynthesisthroughionexchange AT lauraestefaniabriand optimizationoftheoperativeconditionsforheteropolyacidssynthesisthroughionexchange |