A5052250998- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Zeolite Catalysis and Synthesis
- Electrocatalysts for Energy Conversion
- Metal-Organic Frameworks: Synthesis and Applications
- Catalysis and Hydrodesulfurization Studies
- Advanced Photocatalysis Techniques
- Mass Spectrometry Techniques and Applications
- Ammonia Synthesis and Nitrogen Reduction
- Carbon Nanotubes in Composites
- Mechanical and Optical Resonators
- Nanomaterials for catalytic reactions
- Chemical Synthesis and Characterization
- Advanced Nanomaterials in Catalysis
- Catalysts for Methane Reforming
Purdue University West Lafayette
2019-2023
We combine experiment and theory to investigate the cooperation or competition between organic inorganic structure-directing agents (SDAs) for occupancy within microporous voids of chabazite (CHA) zeolites rationalize effects SDA siting on biasing framework Al arrangement (Al–O(−Si–O)x–Al, x = 1–3) among CHA essentially fixed composition (Si/Al 15). crystallized using mixtures TMAda+ Na+ contain one occluded per cage co-occluded in an amount linearly proportional number 6-MR paired sites,...
NOx selective catalytic reduction (SCR) with NH3 on Cu-zeolites is a commercial emissions control technology for diesel and lean-burn engines. Mitigating low-temperature remains an outstanding challenge, motivating improved understanding of the reaction mechanism, active site requirements, rate-determining processes at low temperatures (<523 K). In this Perspective, we discuss how operando spectroscopy provides crucial information about structures, coordination environments, oxidation states...
Spectroscopic, titrimetric, and gas-phase product analysis methods reveal a six-electron process for NH 3 -assisted reduction of mononuclear Cu( ii ) sites to i in Cu-CHA zeolites different site speciation density.