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Redistribution of copper in KCl-promoted CuCl2/ϒ-Al2O3 catalyst during oxychlorination of ethylene

Author:
SAI PRASAD, P. S, PRASAD, K. B. S, KANTA RAO, P, KAUSHIK, V. K
Source:
Journal of materials science 1997 v.32 no.6 pp. 1479-1482
ISSN:
0022-2461
Subject:
X-ray photoelectron spectroscopy, catalysts, copper, ethylene, temperature
Abstract:
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.
Agid:
6242032