PECULIARITIES OF CHANGES IN THE COORDINATION SPHERE OF CHROMIUM ON THE SURFACE OF DISPERSED SILICA

被引：0
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作者：
MIKOLAICHUK, VV
ISAROV, AV
PLYTO, YV
CHUIKO, AA
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来源：
TEORETICHESKAYA I EKSPERIMENTALNAYA KHIMIYA | 1991年 / 27卷 / 06期
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O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The dependence of chromium coordinative sphere changes on its concentration on the dispersed silica surface has been studied. It has been found that 1170 K vacuum annealing of samples containing less than 0,3 % wt. of Cr(VI) results in the formation of Cr(III) ions in tetrahedral coordination. The molecules of adsorbed water increase their coordination number and the octahedrally coordinated Cr(III) ions are formed.
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页码：726 / 729
页数：4
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