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

DOI: 10.1002/cphc.200400204

Authors: Mark A. Newton (University of Southampton) , Bhrat Jyoti (University of Southampton) , Andrew J. Dent (Diamond Light Source) , Sofia Diaz-Moreno (Diamond Light Source) , Steven G. Fiddy (The European Synchrotron Radiation Facility (ESRF)) , 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

Facility: ID24 at ESRF

Added On: 10/11/2010 08:51

Discipline Tags:

Physical Chemistry Catalysis Chemistry

Technical Tags: