| http://www.w3.org/ns/prov#value | - This temperature varies with catalyst composition, however, as a general principle, for noble metal catalysts, i.e., catalysts containing such noble metals as platinum and palladium, virtually 100 percent activity is achieved at a temperature in the range of about 350 F to 450 F; and for non-noble metal catalysts, i.e., catalysts formed of transition metal oxides, a gradual increase in activity is
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