Redox properties of niobium oxide catalysts

被引:85
作者
Wachs, IE [1 ]
Jehng, JM [1 ]
Deo, G [1 ]
Hu, H [1 ]
Arora, N [1 ]
机构
[1] LEHIGH UNIV,ZETTLEMOYER CTR SURFACE STUDIES,DEPT CHEM,BETHLEHEM,PA 18015
关键词
niobium oxide catalysts; redox properties;
D O I
10.1016/0920-5861(95)00229-4
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Niobia catalysts can contain niobium oxide as a two-dimensional niobium oxide overlayer (surface niobia species), an oxide support (niobia supported surface redox sites) or a mixed oxide (solid solution or compound of niobium oxide). The molecular structures and redox properties of these different niobia-containing catalysts are investigated for several different oxidation reactions. These studies reveal that niobia present as surface metal oxide species, an oxide support and mixed oxides can directly as well as indirectly influence the redox properties of oxide catalysts.
引用
收藏
页码:199 / 205
页数:7
相关论文
共 25 条
[1]  
AMIRIDIS M, IN PRESS
[2]  
ARORA N, UNPUB J CATAL
[3]   ACIDIC PROPERTIES OF SUPPORTED NIOBIUM OXIDE CATALYSTS - AN INFRARED-SPECTROSCOPY INVESTIGATION [J].
DATKA, J ;
TUREK, AM ;
JEHNG, JM ;
WACHS, IE .
JOURNAL OF CATALYSIS, 1992, 135 (01) :186-199
[4]   EFFECT OF ADDITIVES ON THE STRUCTURE AND REACTIVITY OF THE SURFACE VANADIUM-OXIDE PHASE IN V2O5 TIO2 CATALYSTS [J].
DEO, G ;
WACHS, IE .
JOURNAL OF CATALYSIS, 1994, 146 (02) :335-345
[5]   REACTIVITY OF SUPPORTED VANADIUM-OXIDE CATALYSTS - THE PARTIAL OXIDATION OF METHANOL [J].
DEO, G ;
WACHS, IE .
JOURNAL OF CATALYSIS, 1994, 146 (02) :323-334
[6]   DETERMINATION OF NIOBIUM OXYGEN BOND DISTANCES AND BOND ORDERS BY RAMAN-SPECTROSCOPY [J].
HARDCASTLE, FD ;
WACHS, IE .
SOLID STATE IONICS, 1991, 45 (3-4) :201-213
[7]  
HARDCASTLE FD, 1990, THESIS LEHIGH U
[8]  
Jehng J.M., 1990, CAT TOD VOL 8 NO 1, V8, P37
[9]   STRUCTURAL CHEMISTRY AND RAMAN-SPECTRA OF NIOBIUM OXIDES [J].
JEHNG, JM ;
WACHS, IE .
CHEMISTRY OF MATERIALS, 1991, 3 (01) :100-107
[10]   SURFACE MODIFIED NIOBIUM OXIDE CATALYST - SYNTHESIS, CHARACTERIZATION, AND CATALYSIS [J].
JEHNG, JM ;
TUREK, AM ;
WACHS, IE .
APPLIED CATALYSIS A-GENERAL, 1992, 83 (02) :179-200