ESR study of reduced vanadium-titanium oxide catalysts

被引：6
|
作者：
Altynnikov, AA [1 ]
Zenkovets, GA [1 ]
Anufrienko, VF [1 ]
机构：
[1] Boreskov Inst Catalysis, Novosibirsk 630090, Russia
来源：
REACTION KINETICS AND CATALYSIS LETTERS | 1999年 / 67卷 / 02期
关键词：
vanadium-titanium oxide catalyst; reduction with hydrogen; ESR;
D O I：
10.1007/BF02475771
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：
Reduction of vanadium-titanium oxide catalysts with hydrogen in the temperature range of 150-450 degrees C results in the increase of the content of V4+ ions in substitution positions of TiO2 with the anatase structure. The temperature increase up to 250 degrees C results in the growth of the spectral intensity of V4+ associates in substitution positions of anatase. At higher treatment temperatures their intensity decreases due to the formation of VO2 fragments in anatase. At 400 degrees C and higher temperatures a solid solution of V4+ ions in rutile is formed.
引用
收藏
页码：273 / 279
页数：7
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