Related Experiment Video
Updated: Aug 23, 2026

Analysis of SEC-SAXS data via EFA deconvolution and Scatter
Published on: January 28, 2021
XAFS spectroscopy in catalysis research: AXAFS and shape resonances
D Koningsberger1, B Mojet, J Miller
1Department of Inorganic Chemistry and Catalysis, Debye Institute, Utrecht University, PO Box 80083, 3508 TB Utrecht, The Netherlands. d.c.koningsberger@anorg.chem.ruu.nl
Abstract:
Two new techniques in X-ray absorption spectroscopy (XAS) have recently been developed which provide previously unobtainable information on supported noble metal catalysts. Atomic X-ray absorption fine structure (AXAFS) provides direct information on the average changes in interatomic potential of the metal particles induced by metal-support effects. Changes in the interatomic potential can now be directly related to changes in catalytic reactivity. Analysis of shape resonances near the X-ray absorption edge provides information on the changes in the nature of the bonding of adsorbates (like hydrogen) to the metal cluster as induced by the properties of the support. The strong decrease in activity of supported platinum clusters for neo-pentane hydrogenolysis with increasing alkalinity of the support can be ascribed to a decrease in ionization potential of the metal particles directly influenced by the alkalinity of the support.
More Related Videos
12:08Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes
Published on: June 24, 2022
06:00Biological Samples Preparation for Speciation at Cryogenic Temperature using High-Resolution X-Ray Absorption Spectroscopy
Published on: May 27, 2022
Related Concept Videos
Atomic Spectroscopy: Absorption, Emission, and Fluorescence
Atomic Fluorescence Spectroscopy
Spectroscopy of Carboxylic Acid Derivatives
In the...
UV–Vis Spectroscopy: Woodward–Fieser Rules
Molecular Spectroscopy: Absorption and Emission
Atomic Absorption Spectroscopy: Overview
When irradiated by EMR of a particular wavelength, these...