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The impact of phase changes, alloying and segregation in supported RhPd catalysts during selective NO reduction by H-2

DOI: 10.1002/cphc.200400204 DOI Help

Authors: Mark A Newton (ESRF) , Bhrat Jyoti (Southampton University) , Andrew Dent (Diamond Light Source Ltd) , Sofia Diaz-Moreno (Diamond Light Source) , Steven G Fiddy (Daresbury Laboratory) , John Evans (University of Southampton)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: ChemPhysChem , VOL 5 (7) , PAGES 1056-1058

State: Published (Approved)
Published: July 2004

Abstract: Illuminating complexity: Time-resolved, microreactor-based, EDE/mass spectrometry (EDE=energy dispersive extended X-ray absorption fine structure) was used to probe the behaviour of both Rh and Pd components of alloyed nanoparticles during NO reduction by H2. The picture shows the NO conversion as a function of temperature. This surface enrichment in Pd is shown to curtail rapid oxidation of the Rh component by NO and leads to a promotion of NO reduction.

Journal Keywords: Alloys; Heterogeneous Catalysis; Palladium; Rhodium; Structure-Activity Relationships; X-Ray Absorption Spectroscopy

Subject Areas: Chemistry


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