| abstract |
When a catalyst according to the present invention is used to produce ethylene oxide by oxidizing ethylene, it is possible to suppress a gradual decrease in the conversion rate and selectivity to ethylene oxide even when used for a long time. The present invention relates to an alumina support containing zirconium, silver (Ag), cesium (Cs), rhenium (Re), tungsten (W), molybdenum (Mo), chromium (Cr) and vanadium ( V) a catalyst carrying a catalyst component containing at least one element selected from the group consisting of V), wherein the carrier has a zirconium content of 50 to 900 ppm. [Selection figure] None |