Real-time regeneration of a working zeolite monitored <i>via operando</i> X-ray diffraction and crystallographic imaging: how coke flees the MFI framework
Georgios N. Kalantzopoulos, Daniel Rojo‐Gama, Dimitrios K. Pappas, Iurii Dovgaliuk, Unni Olsbye, Pablo Beato, L. F. Lundegaard, David S. Wragg, Stian Svelle
Abstract
-vector of the MFI unit cell is a robust descriptor for bulky coke, as opposed to the unit cell volume, which is affected also by adsorbed species and thermal effects. Our approach holds the promise to quantify and identify coke removal (and formation) in structurally distinct locations within the zeolite framework.
Topics & Concepts
CokePowder diffractionZeoliteRietveld refinementThermal decompositionChemistryCrystallographyDiffractionMaterials scienceCrystal structureCatalysisOrganic chemistryPhysicsOpticsZeolite Catalysis and SynthesisAdvanced NMR Techniques and ApplicationsX-ray Diffraction in Crystallography