Title

Bimetallic Pt-Metal Catalysts For The Decomposition Of Methanol: Effect Of Secondary Metal On The Oxidation State, Activity, And Selectivity Of Pt

Keywords

AFM; Bimetallic nanoparticles; Catalysis; Mass spectrometry; Methanol decomposition; Micelles; Packed-bed mass flow reactor; Pt nanoparticles; Pt-oxides; Segregation; TEM; XPS

Abstract

We present here a study of methanol (MeOH) decomposition over a series of bimetallic Pt-M catalysts, with M = Au, Pd, Ru, Fe. All samples have the same initial size distribution (∼3 nm nanoparticle height), support (ZrO2), and preparation conditions. Therefore, differences in the electronic and catalytic properties of the samples tested are related directly to the addition of the secondary metals (M). We find that the oxidation state as well as the activity of Pt is heavily influenced by the addition of the secondary metal. PtO is found to be highly stable in these systems and increasing concentrations of metallic Pt are associated with the surface segregation of metal M due to its affinity for the oxygen present during air annealing. © 2008 Elsevier B.V. All rights reserved.

Publication Date

11-30-2008

Publication Title

Applied Catalysis A: General

Volume

350

Issue

2

Number of Pages

207-216

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.apcata.2008.08.013

Socpus ID

53549110496 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/53549110496

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