Chemical interactions in multimetal/zeolite catalysts
Mechanistic explanations have been found for the migration of atoms and ions through the zeolite channels leading to specific distribution of ions and the metal clusters. In this report, we summarize the state of understanding attained on a number of topics in the area of mono- and multimetal/zeolite systems, to which our recent research has made significant contributions. The following topics are discussed: (1) Formation of isolated metal atoms in sodalite cages; (2) differences of metal/zeolite systems prepared by ion reduction in channels or via isolated atoms; (3) rejuvenation of Pd/NaY and Pd/HY catalysts by oxidative redispersion of the metal; (4) formation of mono- or bimetal particles in zeolites by programmed reductive decomposition of volatile metal complexes; (5) cation-cation interaction as a cause of enhanced reducibility; (6) formation of palladium carbonyl clusters in supercages; (7) enhanced catalytic activity of metal particle-proton complexes for hydrocarbon conversion reactions; (8) stereoselectivity of catalytic reactions due to geometric constraints of particles in cages.
- Research Organization:
- Northwestern Univ., Evanston, IL (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-87ER13654
- OSTI ID:
- 5830229
- Report Number(s):
- DOE/ER/13654-2; ON: DE92008214
- Country of Publication:
- United States
- Language:
- English
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Chemical interactions in multimetal/zeolite catalysts
Chemical interactions in multimetal/zeolite catalysts
Related Subjects
360104 -- Metals & Alloys-- Physical Properties
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CARBONYLS
CATALYSTS
CHARGED PARTICLES
CHEMICAL REACTIONS
COMPLEXES
DOCUMENT TYPES
FABRICATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
IONS
MATERIALS
MINERALS
PALLADIUM COMPLEXES
PROGRESS REPORT
REDUCTION
REGENERATION
SILICATE MINERALS
SINTERING
TRANSITION ELEMENT COMPLEXES
ZEOLITES