Luminescence study of the adsorption of ammonia and other simple molecules on an activated europium ion exchanged mordenite

Journal Article · Wed Nov 06 00:00:00 EST 1985 · Inorg. Chem.; (United States)

DOI:https://doi.org/10.1021/ic00217a022· OSTI ID:5815880

Arakawa, T; Takakuwa, M; Shiokawa, J

The adsorption of ammonia and other simple molecules on an activated Eu(III) ion exchanged mordenite (Eu-M) has been studied by the measurement of the luminescence of the Eu/sup 2 +/ ion, which was produced by dehydration at 500/sup 0/C. The emission peak of the Eu/sup 2 +/ ion shifted to a shorter wavelength on exposure to ammonia and other simple molecules. The magnitude of the shift was correlated to the specific dielectric constant of the adsorbate. The quantum yield for the Eu/sup 2 +/ emission bands decreased after the adsorption of NH/sub 3/ and CH/sub 3/CN. Also, the lifetime in the Eu/sup 2 +/-adsorbate system was shorter than that in an activated Eu-M sample. The rate constant for the radiationless transitions was more sensitive to the nature of the adsorbate, and the order of the quenching power was CH/sub 3/CN > NH/sub 3/ > (CH/sub 2/NH/sub 2/)/sub 2/. 30 references, 6 figures, 4 tables.

• Research Organization: Osaka Univ., Japan
• OSTI ID: 5815880
• Journal Information: Inorg. Chem.; (United States), Vol. 24:23
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AMMONIA
ADSORPTION
LUMINESCENCE
EUROPIUM
CATALYTIC EFFECTS
ABSORPTION SPECTROSCOPY
ADSORPTION ISOTHERMS
CATALYSIS
CATALYST SUPPORTS
CATALYSTS
CATIONS
CHEMICAL REACTION KINETICS
DEHYDRATION
EXPERIMENTAL DATA
HIGH TEMPERATURE
MORDENITE
QUANTUM EFFICIENCY
RADIATIONLESS DECAY
CHARGED PARTICLES
DATA
DE-EXCITATION
EFFICIENCY
ELEMENTS
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
HYDRIDES
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
IONS
ISOTHERMS
KINETICS
MATERIALS
METALS
MINERALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUMERICAL DATA
RARE EARTHS
REACTION KINETICS
SILICATE MINERALS
SORPTION
SPECTROSCOPY
ZEOLITES
400201* - Chemical & Physicochemical Properties