Time-, space- and energy-resolved in situ characterization of catalysts by X-ray absorption spectroscopy.
Stefan PetersBenny KunkelCafer Tufan CakirAnke KabelitzSteffen WitteThomas BernsteinStephan BartlingMartin RadtkeFranziska EmmerlingAli Mohamed Abdel-MageedSebastian WohlrabAna Guilherme BuzanichPublished in: Chemical communications (Cambridge, England) (2023)
A setup for dispersive X-ray absorption spectroscopy (XAS) with spatial, temporal and energy resolution is presented. Through investigation of a Mo/HZSM-5 catalyst during the dehydroaromatization of methane we observed a reduction gradient along the packed bed. Our new method represents an unprecedented addition to the analytical toolbox for in situ characterizations.
Keyphrases
- high resolution
- single molecule
- ionic liquid
- highly efficient
- dual energy
- carbon dioxide
- mass spectrometry
- metal organic framework
- solid state
- room temperature
- electron microscopy
- solid phase extraction
- gas chromatography mass spectrometry
- computed tomography
- liquid chromatography
- reduced graphene oxide
- gold nanoparticles
- magnetic resonance
- transition metal
- simultaneous determination