研究论文
何孟常,季海冰,赵承易.锑(Ⅲ)在合成性δ态-MnO2表面的氧化机理[J].环境科学学报,2003,23(4):483-487
锑(Ⅲ)在合成性δ态-MnO2表面的氧化机理
- The oxidation mechanism of Sb(Ⅲ) on the surface of synthetic birnessite
- 基金项目：国家自然科学基金(29977002)资助
- 作者
- 单位
- 何孟常
- 北京师范大学环境科学研究所/环境模拟与污染控制国家重点联合实验室
- 季海冰
- 北京师范大学分析测试中心,北京 100875
- 赵承易
- 北京师范大学分析测试中心,北京 100875
- 摘要：研究了锑(Ⅲ)在合成性δ态二氧化锰表面之间发生的氧化反应动力学过程,当pH=5.4时,锑(Ⅲ)的吸附和氧化速率很快.氧化产物锑(Ⅴ)释放速度也很快,但还原产物Mn(Ⅱ)速度较慢.pH对氧化作用影响很大,低pH值和离子强度有利于反应的进行.
- Abstract：The oxidation Kinetics antimony (Ⅲ) on the surface of synthetic birnessite was studied. The depletion of antimony (Ⅲ) from the solution at pH 5.4 was very rapid. Antimony (V) as the oxidation product was released quickly, while the release of manganese (Ⅱ) reduction product was slow. The pH was the main factor affecting the oxidation. Low pH and ion strength favored the oxidation reaction.
- Key words：antimony (Ⅲ) surface oxidation birnessite
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