OBSERVATION OF AG-109 NMR-SPECTRA OF SUPPORTED SILVER CATALYSTS

被引：9

作者：

MASTIKHIN, VM

MUDRAKOVSKY, IL

GONCHAROVA, SN

BALZHINIMAEV, BS

NOSKOVA, SP

ZAIKOVSKY, VI

机构：

[1] Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Novosibirsk

来源：

REACTION KINETICS AND CATALYSIS LETTERS | 1992年 / 48卷 / 02期

关键词：

D O I：

10.1007/BF02162691

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The first observation of Ag-109 NMR spectra from Ag metal particles dispersed on alumina and silica, in some cases at Ag contents as low as 0.1 wt.% is reported. The Knight shifts and relaxation times are found to be typical for Ag bulk metal. The distortions of the Ag metal crystal lattice were found to contribute to Ag-109 NMR line width. The estimation of Ag crystal size at which the metal-to-nonmetal transformation takes place was made from studies of samples with different size distribution of supported Ag particles.

引用

页码：425 / 436

页数：12

共 16 条

[1] Boreskov G. K., 1988, HETEROGENEOUS CATALY
[2] INFLUENCE OF THE DISPERSION OF SILVER ON THE ACTIVITY AND ON THE SELECTIVITY OF AG-SIO2 CATALYSTS FOR ETHYLENE OXIDATION .2. ACTIVITY AND SELECTIVITY OF THE CATALYSTS
JARJOUI, M
GRAVELLE, PC
TEICHNER, SJ
[J]. JOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE, 1978, 75 (11-1) : 1069 - 1078
[3] NUCLEAR MAGNETIC RESONANCE SHIFT IN METALS
KNIGHT, WD
[J]. PHYSICAL REVIEW, 1949, 76 (08): : 1259 - 1260
[4] NUCLEAR MAGNETIC RELAXATION AND RESONNANCE LINE SHIFT IN METALS
KORRINGA, J
[J]. PHYSICA, 1950, 16 (7-8): : 601 - 610
[5] LOSHE A, 1959, KERNINDUKTION, P461
[6] NEKRASOV A, 1970, GENERAL CHEM, V3
[7] NMR OF PLATINUM CATALYSTS .2. RELAXATION
RHODES, HE
WANG, PK
MAKOWKA, CD
RUDAZ, SL
STOKES, HT
SLICHTER, CP
SINFELT, JH
[J]. PHYSICAL REVIEW B, 1982, 26 (07): : 3569 - 3574
[8] NMR OF PLATINUM CATALYSTS .1. LINE-SHAPES
RHODES, HE
WANG, PK
STOKES, HT
SLICHTER, CP
SINFELT, JH
[J]. PHYSICAL REVIEW B, 1982, 26 (07): : 3559 - 3568
[9] KNIGHT SHIFT IN SILVER BASE SOLID SOLUTIONS
ROWLAND, TJ
[J]. PHYSICAL REVIEW, 1962, 125 (02): : 459 - +
[10] RUDITKSY LA, 1982, J TECHN PHYS, V52, P1175

← 1 2 →