Characterizing the dealumination of environmentally relevant zeolites using IR, NMR and neutron diffraction techniques
Results of characterization studies monitoring the sequential chemical bond breaking events, local site symmetry, and long range structural modifications of specific zeolites (H-ZSM-5, TS-1) during hydrothermal treatment of these catalyst materials are described. These characterization techniques include infrared spectroscopy of selected probe molecules, magic angle spinning NMR spectroscopy, and powder neutron diffraction. Information regarding selected examples from each of these techniques is presented and the inherent strengths of each is discussed. The experimental insight into the chemical and structural modifications of high surface area microporous catalyst materials as a function of deactivation conditions (hydrothermal conditioning) is highlighted.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 532457
- Report Number(s):
- LA-UR-97-765; CONF-971058-1; ON: DE97007177; TRN: AHC29721%%7
- Resource Relation:
- Conference: 7. international symposium on catalyst deactivation, Cancun (Mexico), 7-11 Oct 1997; Other Information: PBD: [1997]
- Country of Publication:
- United States
- Language:
- English
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