Title

Size-Selected Pt Nanoparticles Synthesized Via Micelle Encapsulation: Effect Of Pretreatment And Oxidation State On The Activity For Methanol Decomposition And Oxidation

Keywords

AFM; Mass spectrometry; Methanol decomposition; Methanol oxidation; Micelles; Packed-bed reactor; Pt nanoparticles; Pt oxide; PtO; PtO 2; TEM; XPS; ZrO 2

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. © 2009 Springer Science+Business Media, LLC.

Publication Date

8-1-2009

Publication Title

Catalysis Letters

Volume

131

Issue

1-2

Number of Pages

21-32

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1007/s10562-009-0042-8

Socpus ID

69049095482 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/69049095482

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