反应合成法制备Ag/SnO_2复合材料中的反应路线

Reaction Path of Ag/SnO2 Composites Prepared by Reaction Synthesis

采用反应合成法制备Ag/SnO2复合材料,并从电子-原子层次详细阐述反应中合金中间化合物向富集区转变、寻找过渡态最后生成稳定相的过程。结果表明:Sn的活化性能高于Ag,氧源的参与对反应过程起主导作用,且初始反应混合物中分解游离态的O是氧化反应能持续、彻底进行的另一个重要途径,最后预测出完整的反应路径。

Ag/SnO2 composite materials were prepared by reaction synthesis,and the transformation of the alloy intermediate compound to the alloy-rich region,looking for a stable transition state to generate the final phase,was elaborated from the electron-atom level.The results indicate that the activation properties of Sn are higher than Ag,and the participation of oxygen source plays a leading role to the reaction process.The free state O decomposition in the initial reactive mixture is another important way to make the oxidation reaction proceed continually and thoroughly.Finally the complete reaction path was predicted.