A5021283225- Catalytic Processes in Materials Science
- Nanomaterials for catalytic reactions
- Catalysis and Oxidation Reactions
- Zeolite Catalysis and Synthesis
- Electrocatalysts for Energy Conversion
- Nanocluster Synthesis and Applications
Purdue University West Lafayette
2016-2022
Copper ions exchanged into zeolites are active for the selective catalytic reduction (SCR) of nitrogen oxides (NO x ) with ammonia (NH3), but low-temperature rate dependence on copper (Cu) volumetric density is inconsistent reaction at single sites. We combine steady-state and transient kinetic measurements, x-ray absorption spectroscopy, first-principles calculations to demonstrate that under conditions, mobilized Cu can travel through zeolite windows form ion pairs participate in an oxygen...
Theory and experiment reveal relationships between observed UV-visible spectra ion exchange site types, nuclearity, finite-temperature dynamics in Cu exchanged chabazite (SSZ-13) zeolites.
Cu in aged zeolites changes structure during SCR.