Partial oxidation of methane over Ni catalysts based on hexaaliminate- or perovskite-type oxides
| Autor: | Ruji Kikuchi, Koichi Eguchi, Yasuyuki Iwasa, Toshimasa Utaka, Tatsuya Takeguchi, Jun Ueda, Saud A. Al-Drees |
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| Rok vydání: | 2003 |
| Předmět: |
Alkane
chemistry.chemical_classification hexaaluminate Ni catalysts Chemistry Process Chemistry and Technology Inorganic chemistry Heterogeneous catalysis Catalysis Methane law.invention chemistry.chemical_compound Transition metal law partial oxidation of methane Calcination Partial oxidation perovskite Perovskite (structure) |
| Zdroj: | Applied Catalysis A: General. 247:125-131 |
| ISSN: | 0926-860X |
| DOI: | 10.1016/s0926-860x(03)00129-7 |
| Popis: | Ni/Al 2 O 3 , hexaaluminate-type BaNi x Al 12− x O 19− α and perovskite-type LaAl 5/6 Ni 1/6 O 3 were investigated for partial oxidation of methane (POM). The hexaaluminate-type BaNiAl 11 O 19− α calcined at 1400 °C demonstrated more stable and higher activity than Ni/Al 2 O 3 calcined at 1000 °C. The BaNiAl 11 O 19− α catalyst reduced at 1000 °C was more active than the catalyst reduced at 800 °C. The results from XPS analysis revealed that the hexaaluminate-type catalysts calcined and reduced at higher temperature had Ni-rich surfaces and highly dispersed Ni species derived from hexaaluminate crystal, resulting in high activity for partial oxidation of methane. |
| Databáze: | OpenAIRE |
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