Characterization by EXAFS of co/MFI catalysts prepared by sublimation

Catalysts are prepared by subliming CoCl2 or CoBr2 vapor onto the H form of the zeolite MFI, followed by replacing the halide ions by OH groups and subsequent heat treatments. The transition-metal oxide particles possess high activity for the catalytic combustion of hydrocarbons, but a low selectivity for their interaction with NOx.