Comparison of impregnation, liquid- and solid-state ion exchange procedures for the incorporation of nickel in HMFI, HMOR and HBEA
| Autor: | G Kinger, Alois Lugstein, Andreas Jentys, Hannelore Vinek, M Ebel, R Swagera |
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| Rok vydání: | 2000 |
| Předmět: |
Ion exchange
Chemistry Inorganic chemistry chemistry.chemical_element General Chemistry Condensed Matter Physics Heterogeneous catalysis Catalysis chemistry.chemical_compound Nickel Mechanics of Materials General Materials Science Nonane Zeolite Brønsted–Lowry acid–base theory Incipient wetness impregnation |
| Zdroj: | Microporous and Mesoporous Materials. 39:307-317 |
| ISSN: | 1387-1811 |
| Popis: | Nickel containing HMFI, HMOR and HBEA zeolites was prepared by impregnation and liquid- and solid-state ion exchange. The kinetics of the solid-state ion exchange of the protons (Bronsted acid sites) with NiCl 2 was followed by IR and TPE measurements. The results were compared to catalysts prepared by liquid-phase ion exchange and by incipient wetness impregnation. The level of ion exchange reached 100% when the solid-state procedure was used, whereas the exchange level was limited in the case of liquid exchange. The exchange degree increased in the sequence BEA n -nonane hydroconversion with Ni/HMFI as the most active and Ni/HBEA as the most selective catalyst. |
| Databáze: | OpenAIRE |
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