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The nature of oxide supports has a crucial effect on the performance of Pt-based catalysts in the water–gas shift reaction. Supports not only determine the activity of the catalyst, but also influence their stability (deactivation mechanism). Among the catalysts studied, Pt/TiO 2 was the most active. Pt/CeO 2 deactivated with time due to the formation of stable carbonate on the ceria...
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