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Rhodium Dispersion during NO/CO Conversions

DOI: 10.1002/anie.200701419 DOI Help
PMID: 17562548 PMID Help

Authors: Andrew Dent (Diamond Light Source) , John Evans (University of Southampton, Diamond Light Source) , Steven G Fiddy (Daresbury Laboratory) , Bhrat Jyoti (Southampton University) , Moniek Tromp (Southampton University)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Angewandte Chemie International Edition , VOL 46 , PAGES 5356 - 5358

State: Published (Approved)
Published: June 2007

Abstract: Change and change again: Under catalytic conditions for NO/CO conversion, simultaneous time-resolved extended X-ray absorption fine structure spectroscopy and IR studies show that the rhodium atoms in 5?wt?% Rh/Al2O3 rapidly migrate between CO-covered Rh particles and mononuclear Rh–NO sites depending on the changing gas composition. At lower temperatures (473?K), there is interconversion between mononuclear Rh(CO)2 and Rh(NO) centers.

Journal Keywords: Heterogeneous Catalysis \ Ir Spectroscopy \ Rhodium \Synchrotron Radiation

Subject Areas: Chemistry

Facility: ESRF

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