Size-selected Pt Nanoparticles Synthesized via Micelle Encapsulation: Effect of 
Pretreatment and Oxidation State on the Activity for Methanol Decomposition and 
Oxidation

Croy, Jason R.; Mostafa, S.; Heinrich, H.; Roldan Cuenya, Beatriz

doi:10.1007/s10562-009-0042-8

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Size-selected Pt Nanoparticles Synthesized via Micelle Encapsulation: Effect of Pretreatment and Oxidation State on the Activity for Methanol Decomposition and Oxidation

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Citation

Croy, J. R., Mostafa, S., Heinrich, H., & Roldan Cuenya, B. (2009). Size-selected Pt Nanoparticles Synthesized via Micelle Encapsulation: Effect of Pretreatment and Oxidation State on the Activity for Methanol Decomposition and Oxidation. Catalysis Letters, 131(1-2), 21-32. doi:10.1007/s10562-009-0042-8.

Cite as: https://hdl.handle.net/21.11116/0000-0006-D23E-8

Abstract

The effect of pretreatment conditions on the oxidation state and activity of micelle-synthesized Pt nanoparticles supported on ZrO₂ was studied for methanol decomposition and oxidation reactions. An O₂-pretreatment is observed to be effective for producing clean, stable, and active nanoparticles. Pt-oxide species formed during such pretreatments were found to have little influence in methanol decomposition reactions due to their tendency to reduce. However, these same species are stable during methanol oxidation and appear to take part in a Mars-van Krevelen-type of process, in which bound-oxygen (nanoparticle shell) may be replenished with oxygen from the gas phase.