BONDING STATES OF SURFACE VANADIUM(V) OXIDE PHASES ON SILICA - STRUCTURAL CHARACTERIZATION BY V-51 NMR AND RAMAN-SPECTROSCOPY

被引：278

作者：

DAS, N

ECKERT, H

HU, HC

WACHS, IE

WALZER, JF

FEHER, FJ

机构：

[1] UNIV CALIF SANTA BARBARA, DEPT CHEM, SANTA BARBARA, CA 93106 USA

[2] LEHIGH UNIV, DEPT CHEM, ZETTLEMOYER CTR SURFACE STUDIES, BETHLEHEM, PA 18015 USA

[3] LEHIGH UNIV, DEPT CHEM ENGN, BETHLEHEM, PA 18015 USA

[4] UNIV CALIF IRVINE, DEPT CHEM, BREA, CA 92621 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1993年 / 97卷 / 31期

关键词：

D O I：

10.1021/j100133a020

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 coordination and local order of vanadium(V) surface oxides on silica are examined by V-51 spin echo and MAS NMR, as well as by Raman spectroscopy. Comparison with corresponding data on two crystallographically characterized model compounds, [Ph3SiO]3VO and [(c-C6H11)7(Si7O12)VO]2, reveals unambiguously that the vanadia species found at the silica surface is a three-legged (SiO)3V=O unit. These results support the hypothesis that silsesquioxanes are appropriate model systems for hydroxylated silica surfaces.

引用

页码：8240 / 8243

页数：4

共 27 条

[1] MIXED GELS OF VANADIA AND SILICA - STRUCTURAL-PROPERTIES AND CATALYTIC BEHAVIOR IN SELECTIVE REDUCTION OF NITRIC-OXIDE WITH AMMONIA
BAIKER, A
DOLLENMEIER, P
GLINSKI, M
RELLER, A
SHARMA, VK
[J]. JOURNAL OF CATALYSIS, 1988, 111 (02) : 273 - 285
[2] VANADIUM-OXIDE MONOLAYER CATALYSTS - PREPARATION, CHARACTERIZATION AND CATALYTIC ACTIVITY
BOND, GC
TAHIR, SF
[J]. APPLIED CATALYSIS, 1991, 71 (01): : 1 - 31
[3] REMARKABLE SPREADING BEHAVIOR OF MOLYBDENA ON SILICA CATALYSTS - AN INSITU EXAFS-RAMAN STUDY
DEBOER, M
VANDILLEN, AJ
KONINGSBERGER, DC
GEUS, JW
VUURMAN, MA
WACHS, IE
[J]. CATALYSIS LETTERS, 1991, 11 (02) : 227 - 239
[4] SURFACE OXIDE-SUPPORT INTERACTION (SOSI) FOR SURFACE REDOX SITES
DEO, G
WACHS, IE
[J]. JOURNAL OF CATALYSIS, 1991, 129 (01) : 307 - 312
[5] PHYSICAL AND CHEMICAL CHARACTERIZATION OF SURFACE VANADIUM-OXIDE SUPPORTED ON TITANIA - INFLUENCE OF THE TITANIA PHASE (ANATASE, RUTILE, BROOKITE AND B)
DEO, G
TUREK, AM
WACHS, IE
MACHEJ, T
HABER, J
DAS, N
ECKERT, H
HIRT, AM
[J]. APPLIED CATALYSIS A-GENERAL, 1992, 91 (01) : 27 - 42
[6] PREDICTING MOLECULAR-STRUCTURES OF SURFACE METAL-OXIDE SPECIES ON OXIDE SUPPORTS UNDER AMBIENT CONDITIONS
DEO, G
WACHS, IE
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1991, 95 (15) : 5889 - 5895
[7] SOLID-STATE V-51 NMR STRUCTURAL STUDIES OF VANADIUM(V) OXIDE CATALYSTS SUPPORTED ON TIO2(ANATASE) AND TIO2(RUTILE) - THE INFLUENCE OF SURFACE IMPURITIES ON THE VANADIUM(V) COORDINATION
ECKERT, H
DEO, G
WACHS, IE
HIRT, AM
[J]. COLLOIDS AND SURFACES, 1990, 45 : 347 - 359
[8] SOLID-STATE V-15 NMR STRUCTURAL STUDIES ON SUPPORTED VANADIUM(V) OXIDE CATALYSTS - VANADIUM-OXIDE SURFACE-LAYERS ON ALUMINA AND TITANIA SUPPORTS
ECKERT, H
WACHS, IE
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1989, 93 (18) : 6796 - 6805
[9] ENHANCED SILYLATION REACTIVITY OF A MODEL FOR SILICA SURFACES
FEHER, FJ
NEWMAN, DA
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1990, 112 (05) : 1931 - 1936
[10] SYNTHESIS AND CHARACTERIZATION OF VANADIUM-CONTAINING SILSESQUIOXANES
FEHER, FJ
WALZER, JF
[J]. INORGANIC CHEMISTRY, 1991, 30 (08) : 1689 - 1694

← 1 2 3 →