The Role of Structure and Conductivity of Perovskites Bi4V2-2x M2x O11-δ (M = Cu2+, Fe3+, Zr4+) in the Catalytic Dehydrogenation of Isobutanol

被引：2
|
作者：
Mikhalenko, I. I. [1 ]
Povarova, E. I. [1 ]
Pylinina, A. I. [1 ]
机构：
[1] Peoples Friendship Univ Russia, Moscow, Russia
来源：
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2016年 / 90卷 / 04期
关键词：
complex bismuth vanadates; conductivity; structure; catalytic activity; isobutanol; SOLID ELECTROLYTES; OXIDATION; MEMBRANES; CHEMISTRY; BIMEVOX;
D O I：
10.1134/S0036024416040221
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 catalytic activity of solid electrolytes from the family of complex bismuth vanadates Bi4V2-2x M-2x O11-delta (BIMEVOX) with V5(+) ions partially substituted by 3d metal cations was studied. In the transformations of isobutanol, it was found to depend on the crystal structure (alpha, beta, gamma Aurivillius phases), which changes at increased dopant ion contents (x (M)). The highly conductive tetragonal gamma phase was most active for all BIMEVOX oxides. The activation energy of the dehydrogenation of isobutanol E (a) (C=O) increased linearly with the charge of the M (n+) ion and activation energy of conductivity of the gamma phase of BIMEVOX in the series Cu2+ -> Fe3+ -> Zr4+.
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页码：771 / 776
页数：6
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