Surface and Catalytic Properties of NiO–FeO Solids Supported on AlO
A series of NiO–Fe 2 O 3 catalysts supported on γ-Al 2 O 3 was prepared. The effect of the NiO and Fe 2 O 3 contents and the precalcination temperature on the surface and catalytic properties of the various solids has been investigated. The surface characteristics, viz. SBET, V p and r, were determi...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
1996-10-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/026361749601300509 |
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| _version_ | 1832544514060845056 |
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| author | G.A. El-Shobaky A.M. Ghozza N.M. Deraz |
| author_facet | G.A. El-Shobaky A.M. Ghozza N.M. Deraz |
| author_sort | G.A. El-Shobaky |
| collection | DOAJ |
| description | A series of NiO–Fe 2 O 3 catalysts supported on γ-Al 2 O 3 was prepared. The effect of the NiO and Fe 2 O 3 contents and the precalcination temperature on the surface and catalytic properties of the various solids has been investigated. The surface characteristics, viz. SBET, V p and r, were determined using N 2 adsorption conducted at –196°C. The catalytic activities of the various solids were studied using the oxidation of CO by O 2 at temperatures in the range between 150°C and 400°C. The prepared solids were preheated in air at various temperatures between 400°C and 1000°C. The results obtained revealed that the SBET values of the different solids decrease progressively on increasing the precalcination temperature above 400°C due to sintering. The specific surface areas were also found to decrease on increasing both the NiO and Fe 2 O 3 contents. The catalytic activities, expressed as reaction rate constant (k) and reaction rate constant per unit area (k), were found to decrease on increasing the precalcination temperature in the range 400–1000°C. Furthermore, the amounts of NiO and Fe 2 O 3 in the different solids modified their catalytic activities in different manners. |
| format | Article |
| id | doaj-art-e17f4e94029e4d73b8f8eeaba6f7eb1d |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 1996-10-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-e17f4e94029e4d73b8f8eeaba6f7eb1d2025-02-03T10:12:57ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40381996-10-011310.1177/026361749601300509Surface and Catalytic Properties of NiO–FeO Solids Supported on AlOG.A. El-Shobaky0A.M. Ghozza1N.M. Deraz2(1) National Research Centre, Dokki, Cairo, Egypt.(2) Chemistry Department, Faculty of Science, Zagazig University, Zagazig, Egypt.(1) National Research Centre, Dokki, Cairo, Egypt.A series of NiO–Fe 2 O 3 catalysts supported on γ-Al 2 O 3 was prepared. The effect of the NiO and Fe 2 O 3 contents and the precalcination temperature on the surface and catalytic properties of the various solids has been investigated. The surface characteristics, viz. SBET, V p and r, were determined using N 2 adsorption conducted at –196°C. The catalytic activities of the various solids were studied using the oxidation of CO by O 2 at temperatures in the range between 150°C and 400°C. The prepared solids were preheated in air at various temperatures between 400°C and 1000°C. The results obtained revealed that the SBET values of the different solids decrease progressively on increasing the precalcination temperature above 400°C due to sintering. The specific surface areas were also found to decrease on increasing both the NiO and Fe 2 O 3 contents. The catalytic activities, expressed as reaction rate constant (k) and reaction rate constant per unit area (k), were found to decrease on increasing the precalcination temperature in the range 400–1000°C. Furthermore, the amounts of NiO and Fe 2 O 3 in the different solids modified their catalytic activities in different manners.https://doi.org/10.1177/026361749601300509 |
| spellingShingle | G.A. El-Shobaky A.M. Ghozza N.M. Deraz Surface and Catalytic Properties of NiO–FeO Solids Supported on AlO Adsorption Science & Technology |
| title | Surface and Catalytic Properties of NiO–FeO Solids Supported on AlO |
| title_full | Surface and Catalytic Properties of NiO–FeO Solids Supported on AlO |
| title_fullStr | Surface and Catalytic Properties of NiO–FeO Solids Supported on AlO |
| title_full_unstemmed | Surface and Catalytic Properties of NiO–FeO Solids Supported on AlO |
| title_short | Surface and Catalytic Properties of NiO–FeO Solids Supported on AlO |
| title_sort | surface and catalytic properties of nio feo solids supported on alo |
| url | https://doi.org/10.1177/026361749601300509 |
| work_keys_str_mv | AT gaelshobaky surfaceandcatalyticpropertiesofniofeosolidssupportedonalo AT amghozza surfaceandcatalyticpropertiesofniofeosolidssupportedonalo AT nmderaz surfaceandcatalyticpropertiesofniofeosolidssupportedonalo |