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

页码：909 / 914

页数：6

共 20 条

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ADAMSKI A, 1996, 13 INT S REACT SOL S

[2]

ALBRECHT S, 1994, THESIS U LEIPZIG

[3]

BIELANSKI A, 1991, OXYGEN CATALYSIS, P43

[4] VANADIUM-OXIDE MONOLAYER CATALYSTS - PREPARATION, CHARACTERIZATION AND CATALYTIC ACTIVITY [J].