| Autor: | V. K Kaushik, P.S. Sai Prasad, Kuppili B.S. Prasad, P. Kanta Rao |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
inorganic chemicals
Ethylene Chemistry organic chemicals Mechanical Engineering Catalyst support Inorganic chemistry Oxychlorination chemistry.chemical_element Heterogeneous catalysis Copper Catalysis chemistry.chemical_compound X-ray photoelectron spectroscopy Mechanics of Materials heterocyclic compounds General Materials Science Redistribution (chemistry) |
| Zdroj: | Journal of Materials Science. 32:1479-1482 |
| ISSN: | 0022-2461 |
| DOI: | 10.1023/a:1018558001967 |
| Popis: | In a study on oxychlorination of ethylene using KCl-promoted CuCl2/Al2O3 catalyst having a composition similar to that of a commercial catalyst, steady-state catalyst composition was determined over a wide range of temperature after identifying the surface copper species by X-ray photoelectron spectroscopy (XPS). The data show a marked shift in the steady-state catalyst composition at about the same temperature at which structural change had been previously reported for similar catalysts. This is confirmed in a separate study of the CuCl2–ethylene reaction which is considered to be the key intermediate step in the overall oxychlorination reaction network. |
| Databáze: | OpenAIRE |
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