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Platinum production totalled 7.01 M ounces in 2006, up 6% year on year. Output growth continues to be led by South Africa. Palladium supply grew 5% in 2006 to reach 7.26 M ounces, but is projected to decline 2% in 2007 because of an anticipated downturn in production from Norilsk Nickel.
## Abstract The kinetics of ethylene oxidation by air over a supported silver catalyst were investigated in the temperature range 490โ620 K. The reaction network was found to be triangular. Under virtually constant oxygen partial pressure (0.2 bar), the following rate relationships, (in mol g^โ1^s^
It exhibits selective oxidation of carbon monoxide at room temperature with an efficiency of 80-90%. Potential applications include polymer electrolyte fuel cells. Ecodevice is to commercialise the new catalyst.