Study of Cu/sup 2 +/-doped zeolites Na-rho, K-rho, and Ca-rho by electron spin resonance and electron spin echo modulation spectroscopies

Journal Article · Thu May 21 04:00:00 EDT 1987 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100295a055· OSTI ID:6510024

Anderson, M W; Kevan, L

The location and adsorbate interaction of Cu/sup 2 +/ in Na-, K-, and Ca-rho zeolites doped with Cu/sup 2 +/ has been studied by electron spin resonance (ESR) and electron spin echo modulation (ESEM) spectroscopies. It is found that the activation process varies very little with the type of countercation and the major hydrated species in zeolite rho is a square-coplanar or square-pyramidal Cu/sup 2 +/ bound to two water molecules. Adsorption of polar molecules, such as ammonia, methanol, and ethanol, results in complexing with the Cu/sub 2//sup +/ although in the case of methanol the number of ligands is less for Na-, K-, and Ca-rho than for H-rho studied previously. Nonpolar molecules, such as ethylene, are essentially excluded from the zeolite by the Na, K, and Ca cations which are located in the octagonal prisms blocking entrance to the zeolite interior.

• Research Organization: Univ. of Houston, TX
• OSTI ID: 6510024
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 91:11; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ACOUSTIC ESR
ADSORPTION
ALCOHOLS
ALKALI METALS
ALKALINE EARTH METALS
ALLOYS
AMMONIA
CALCIUM
CATIONS
CHARGED PARTICLES
COPPER
COPPER ADDITIONS
COPPER ALLOYS
CRYSTAL STRUCTURE
DATA
ELECTRON SPIN RESONANCE
ELEMENTS
ETHANOL
EXPERIMENTAL DATA
HYDRIDES
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
IONS
LOW TEMPERATURE
MAGNETIC RESONANCE
MATERIALS
METALS
METHANOL
MINERALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
POTASSIUM
RESONANCE
SODIUM
SORPTION
STRUCTURAL CHEMICAL ANALYSIS
TRANSITION ELEMENTS
ZEOLITES