hapetuskatalyytti
Hapetuskatalyytti, or oxidation catalyst, is a substance that increases the rate of oxidation reactions by providing active sites for the transfer of oxygen from an oxidant to a substrate, while remaining chemically unchanged over many cycles. In industrial chemistry, oxidation catalysts are typically solids that operate heterogeneously, although homogeneous catalysts are used for some liquid-phase processes.
Common materials include noble metals such as platinum, palladium, and rhodium, often dispersed on oxide supports
Applications span automotive and chemical industries. Automotive exhaust catalysts (three-way catalysts) use Pt/Pd/Rh on oxide supports
Performance considerations include activity, selectivity, and stability, as well as resistance to sintering and catalyst poisoning.
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