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In situ surface analysis of palladium–platinum alloys in methane oxidation conditions

DOI: 10.1039/D1FD00113B DOI Help

Authors: Alexander I. Large (Diamond Light Source) , Roger A. Bennett (University of Reading) , Tugce Eralp-Erden (Johnson Matthey Technology Centre) , Georg Held (Diamond Light Source)
Co-authored by industrial partner: Yes

Type: Journal Paper
Journal: Faraday Discussions , VOL 134

State: Published (Approved)
Published: April 2022
Diamond Proposal Number(s): 27121 , 24584

Open Access Open Access

Abstract: Palladium and palladium–platinum foils were analysed using temperature-programmed near-ambient pressure X-ray photoelectron spectroscopy (TP-NAP-XPS) under methane oxidation conditions. Oxidation of palladium is inhibited by the presence of water, and in oxygen-poor environments. Pt addition further inhibits oxidation of palladium across all reaction conditions, preserving metallic palladium to higher temperatures. Bimetallic foils underwent significant restructuring under reaction conditions, with platinum preferentially migrating to the bulk under select conditions.

Diamond Keywords: Alloys

Subject Areas: Materials, Chemistry, Environment

Instruments: B07-C-Versatile Soft X-ray beamline: Ambient Pressure XPS and NEXAFS

Added On: 02/05/2022 09:01


Discipline Tags:

Earth Sciences & Environment Climate Change Physical Chemistry Catalysis Chemistry Materials Science Metallurgy

Technical Tags:

Spectroscopy X-ray Photoelectron Spectroscopy (XPS)