| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9608042 | Applied Catalysis A: General | 2005 | 7 Pages |
Abstract
Cr3+-doped MgF2 systems are synthesised by a novel non-aqueous soft chemistry route using different Cr precursors and varying Cr loading. These systems have been characterized by X-ray powder diffraction (XRD), BET surface area, TPD of ammonia, FT-IR pyridine adsorption analysis and X-ray photoelectron spectroscopy, and tested for their catalytic activity in dismutation of CCl2F2 and CF3-CHClF. Catalysts synthesised starting from CrO3 or (CH3CO2)7Cr3(OH)2 showed better catalytic activity than those prepared with CrCl3. FT-IR pyridine adsorption studies reveal that the catalytic activity is highly correlated with the Lewis acid strength. In TPD of NH3 catalysts prepared from CrO3 and (CH3CO2)7Cr3(OH)2, precursors showed a similar behaviour, different from that of catalysts prepared from CrCl3.
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Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
J. Krishna Murthy, Udo Gross, Stephan Rüdiger, Ercan Ãnveren, Wolfgang Unger, Erhard Kemnitz,