Utilize este identificador para referenciar este registo:
https://hdl.handle.net/10216/102651
Autor(es): | S. A. C. Carabineiro B. F. Machado R. R. Bacsa P. Serp G. Drazic J. L. Faria J. L. Figueiredo |
Título: | Catalytic performance of Au/ZnO nanocatalysts for CO oxidation |
Data de publicação: | 2010 |
Resumo: | Au was loaded (1% wt.) on three different ZnO supports, by three different methods: photodeposition, double impregnation and ultrasonication. Two commercial ZnO supports were used, along with a ZnO. sample consisting of nanosized single crystals prepared by chemical vapour deposition. The samples were extensively characterised by various techniques. CO oxidation was used as a test reaction to compare the catalytic activity. The best results were obtained with ZnO prepared by chemical vapour deposition with Au loaded by ultrasonication that showed an activity of 2 mol(co) g(Au)(-1) h(-1) at room temperature. High-resolution electron microscopy images of the sample showed a number of gold nanocrystals epitaxially oriented on the ZnO rod. The unique catalyst-substrate interaction can be related to the increased catalytic activity of this sample, which was not observed for any of the others. |
Assunto: | Catálise heterogénea, Engenharia química Heterogeneous catalysis, Chemical engineering |
Áreas do conhecimento: | Ciências da engenharia e tecnologias::Engenharia química Engineering and technology::Chemical engineering |
URI: | https://repositorio-aberto.up.pt/handle/10216/102651 |
Tipo de Documento: | Artigo em Revista Científica Internacional |
Condições de Acesso: | restrictedAccess |
Aparece nas coleções: | FEUP - Artigo em Revista Científica Internacional |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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61207.pdf Restricted Access | 870.03 kB | Adobe PDF | Request a copy from the Author(s) |
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