ESR and optical studies of cationic silver clusters in zeolite rho

被引：17

作者：

Michalik, J

Sadlo, J

Kodaira, T

Shimomura, S

Yamada, H

机构：

[1] Inst Nucl Chem & Technol, PL-03195 Warsaw, Poland

[2] Natl Inst Res Inorgan Mat, Tsukuba, Ibaraki 305, Japan

[3] Natl Inst Adv Interdisciplinary Res, Tsukuba, Ibaraki 305, Japan

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 1998年 / 232卷 / 1-2期

关键词：

Hydrated; Ag43; Zeolite; Electron Spin Resonance; Spectrophotometry;

D O I：

10.1007/BF02383728

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Silver cationic clusters formed in gamma-irradiated AgCs-rho zeolites in hydrated and dehydrated forms have been studied by electron spin resonance (ESR) spectroscopy and diffuse reflectance spectrophotometry. It was found that tetrameric silver clusters, Ag-4(3+) in dehydrated zeolites and Ag-4(2+) in hydrated samples, are stabilized at room temperature. Tetrameric silver is trapped inside octagonal prism of zeolite framework and does not show any noticeable decay as far as samples are evacuated.

引用

页码：135 / 137

页数：3

共 8 条

[1] GROWTH OF SILVER PARTICLES IN AQUEOUS-SOLUTION - LONG-LIVED MAGIC CLUSTERS AND IONIC-STRENGTH EFFECTS
ERSHOV, BG
JANATA, E
HENGLEIN, A
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1993, 97 (02) : 339 - 343
[2] SOME UNUSUAL PROPERTIES OF ACTIVATED AND REDUCED AGNAA ZEOLITES
JACOBS, PA
UYTTERHOEVEN, JB
[J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1979, 75 : 56 - 64
[3] Tetrameric silver clusters in rho zeolite stable above room temperature - ESR studies
Michalik, J
Sadlo, J
Yu, JS
Kevan, L
[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 1996, 115 : 239 - 247
[4] PARAMAGNETIC SILVER CLUSTERS IN AG-NAA ZEOLITE - ELECTRON-SPIN-RESONANCE AND DIFFUSE REFLECTANCE SPECTROSCOPIC STUDIES
MICHALIK, J
KEVAN, L
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1986, 108 (15) : 4247 - 4253
[5] PARAMAGNETIC SILVER CLUSTERS IN IRRADIATED AG-A MOLECULAR-SIEVES
MORTON, JR
PRESTON, KF
[J]. JOURNAL OF MAGNETIC RESONANCE, 1986, 68 (01) : 121 - 128
[6] NA-4(3+) CLUSTERS IN SODALITE
SMEULDERS, JBAF
HEFNI, MA
KLAASSEN, AAK
DEBOER, E
WESTPHAL, U
GEISMAR, G
[J]. ZEOLITES, 1987, 7 (04): : 347 - 352
[7] XU B, 1991, J PHYS CHEM-US, V95, P1147
[8] XU B, 1991, J CHEM SOC FARADAY T, V87, P3157

← 1 →