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https://repositorio.ufba.br/handle/ri/7655
metadata.dc.type: | Artigo de Periódico |
Title: | Zeolite catalysts for the water gas shift reaction |
Other Titles: | Applied Catalysis A: General |
Authors: | Souza, Tânia Regina Oliveira de Brito, Suzana Modesto de Oliveira Andrade, Heloysa Martins Carvalho |
metadata.dc.creator: | Souza, Tânia Regina Oliveira de Brito, Suzana Modesto de Oliveira Andrade, Heloysa Martins Carvalho |
Abstract: | Cu- and Cu,Zn-ZSM-5 zeolite catalysts were prepared using different cation exchange procedures. The samples were characterized by TPR; CO-FTIR; O2-TPD, XRD; BET and XPS. These catalysts showed appreciable activity and selectivity for the water gas shift reaction at 300–400°C and vapor/gas ratio=3. The Cu,Zn-ZSM-5 catalysts deactivated after a long exposure to steam, at high temperature. The catalytic activity of co-exchanged zeolite catalysts depended on the preparation method. The introduction of zinc ions enhanced the activity of the Cu-ZSM-5 catalysts but Zn-ZSM-5 catalyst was found to be inactive for the water gas shift reaction. The role of zinc was to change the distribution of the copper species in the zeolite catalyst. |
Keywords: | Water gas shift reaction Cu-ZSM-5, Cu,Zn-ZSM-5 Cation exchange Steam tolerance |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/7655 |
Issue Date: | Mar-1999 |
Appears in Collections: | Artigo Publicado em Periódico (Química) |
Files in This Item:
File | Description | Size | Format | |
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Brito.pdf_7 Restricted Access | 238,07 kB | Adobe PDF | View/Open Request a copy |
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