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Combining X-ray absorption with X-ray diffraction for the structural elucidation of catalysts

Sankar, G; Thomas, JM; Catlow, CRA; (2000) Combining X-ray absorption with X-ray diffraction for the structural elucidation of catalysts. TOP CATAL , 10 (3-4) 255 - 264.

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Abstract

We describe how the combined XAS/XRD technique can provide powerful information on the structures of catalytically active centres. We consider some of the most industrially important catalysts, including Fe-ZSM-5, TS-1, Ti-zeolite beta, Ti-MCM-41 and determine the coordination environment in the active state. In addition, we show how EXAFS information is invaluable as a means for understanding and predicting redox catalytic properties of transition-metal-ion-substituted microporous aluminophosphates - materials which are the best inorganic systems known to date for functionalizing selectively terminal groups of an alkane molecule, in air at moderate temperatures and pressures.

Type:Article
Title:Combining X-ray absorption with X-ray diffraction for the structural elucidation of catalysts
Keywords:catalyst design, selective oxidation of hydrocarbons, structure of active sites, shape-selective catalysis, SOLID CATALYSTS, IN-SITU, OPERATING-CONDITIONS, COMPUTER-SIMULATION, COPPER CATALYST, LOCAL-STRUCTURE, ACTIVE-SITES, Y-ZEOLITE, ALUMINUM, TITANIUM
UCL classification:UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry

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