Characterization of modified V2O5-ZrO2 catalysts for the oxidative dehydrogenation of propane

被引：29
|
作者：
Albrecht, S
Wendt, G
Lippold, G
Adamski, A
Dyrek, K
机构：
[1] Univ Leipzig, Fak Chem & Mineral, Inst Chem Tech, D-04103 Leipzig, Germany
[2] Fak Phys & Geowissensch, Inst Expt Phys 1, D-04103 Leipzig, Germany
[3] Jagiellonian Univ, Fac Chem, PL-30060 Krakow, Poland
[4] Fak Phys & Geowissensch, Inst Expt Phys 2, D-04103 Leipzig, Germany
来源：
SOLID STATE IONICS | 1997年 / 101卷
关键词：
vanadium oxide surface species; zirconia support; alkalimetal additives; oxidative dehydrogenation of propane;
D O I：
10.1016/S0167-2738(97)00387-1
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：
V2O5-ZrO2 catalysts of different composition were investigated by means of X-ray diffraction, Laser-RAMAN spectroscopy, temperature programmed reduction and catalytic measurements. At low vanadia contents monomeric vanadyl species and polyvanadate species were found. Alkalimetal additives lead to an increase of the V=O bond length in the sequence of nonpromoted < Li < Na < K. The catalytic activity in the oxidative dehydrogenation of propane is connected to the kind of VOx surface species and correlates with the reducibility.
引用
收藏
页码：909 / 914
页数：6
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