PULSED EPR STUDIES OF NANOCRYSTALLINE ZEOLITES AND HOLLOW ZEOLITE STRUCTURES
EMSL Project ID
17510
Abstract
Nanocrystalline zeolites are zeolites with crystal sizes of less than 100 nm and external surface areas of ~100 m2/g. Hollow zeolite structures are synthesized using nanocrystalline zeolites as building blocks. Nanocrystalline zeolites and hollow zeolite structures are envisioned as promising new materials for applications in catalysis and environmental remediation. In order to realize these applications, transition metal active sites (Cu2+, V4+, Fe 3+) are being incorporated into nanocrystalline zeolites and zeolite structures. Pulsed EPR experiments at PNNL on these transition metal containing nanocrystalline zeolites and hollow zeolite structures are proposed. The pulsed EPR experiments will be used to characterize the transition metal center. Small molecules, such as ammonia, will be used to probe ligand binding using HYSCORE and ESEEM experiments. The pulsed EPR experiments will provide important structural information about the nanocrystalline zeolites and zeolite structures.
Project Details
Project type
Capability Research
Start Date
2006-04-12
End Date
2008-04-13
Status
Closed
Released Data Link
Team
Principal Investigator