| 简介 |
Method for manufacturing catalysts containing a) 0.001 to 10 % by weight of at least one metal from the group consisting of ruthenium, copper, and gold, b) 0 to 5 % by weight of one or more alkaline earth metals, c) 0 to 5 % by weight of one or more alkali metals, d) 0 to 10 % by weight of one or more rare earth metals, e) 0 to 10 % by weight of one or more additional metals selected from the group consisting of palladium, platinum, osmium, iridium, silver, and rhenium, based in each case on the total weight of the catalyst, on a substrate, in which the substrate is impregnated with one or more metal salt solutions that contain the active metal(s) and optionally promoter metals a) to e), and the impregnated substrate is dried and calcined, characterized in that the impregnated substrate is calcined at 200 to 600 °C in an acid-containing atmosphere in a fixed-bed or fluidized-bed reactor. |
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