THE INFLUENCE OF ALUMINUM ON IRON-OXIDES .16. AL-SUBSTITUTED MAGNETITE SYNTHESIZED AT AMBIENT-TEMPERATURES

被引：51
|
作者：
SCHWERTMANN, U
MURAD, E
机构：
[1] Lehrstuhl fur Bodenkunde, Technische Univ Munchen
来源：
CLAYS AND CLAY MINERALS | 1990年 / 38卷 / 02期
关键词：
D O I：
10.1346/CCMN.1990.0380211
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：
Mixtures of magnetite and goethite were formed by the slow oxidation of mixed FeCl2-AlCL3 solutions in an alkaline environment at room temperature. The compositions of the products ranged from almost exclusively magnetite in Al-free systems to goethite only at Al/(Al+Fe)≃0.3. The capacity of the goethite structure to tolerate more Al may explain why goethite replaced magnetite at higher Al concentrations. -from Authors
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页码：196 / 202
页数：7
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