Síntese e caracterização de alfa-fosfato de zircônio(IV) contendo agregados de cobre metálico Synthesis and characterization of alpha-zirconium (IV) hydrogenphosphate containing metallic copper clusters
| Autor: | Alexilda Oliveira de Souza, Maria do Carmo Rangel, Oswaldo Luiz Alves |
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| Jazyk: | English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: | 2005 |
| Předmět: | |
| Zdroj: | Química Nova, Vol 28, Iss 1, Pp 46-49 (2005) |
| Druh dokumentu: | article |
| ISSN: | 0100-4042 1678-7064 |
| DOI: | 10.1590/S0100-40422005000100009 |
| Popis: | The alpha-zirconium (IV) hydrogenphosphate (alpha-ZrP) has received great attention in the last years due to its properties like ion exchange, intercalation, ionic conductivity and catalytic activity. This work reports a method to produce metallic copper clusters on alpha-ZrP to be used as catalysts in petrochemical processes. It was found that the solids were non-crystalline regardless of the uptake of copper and the reduction. The specific surface area increased as a consequence of the increase of the interlayer distance to accept the copper ions between the layers. During the reduction, big clusters of copper (0,5-11µ) with different sizes and shapes were produced. |
| Databáze: | Directory of Open Access Journals |
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