Keggin型Si-Mo-V杂多酸的合成与表征
On Synthesis and Charaterization of Keggin-Type Si-Mo-V Heteropolyacid
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摘要: 采用改良的分步加酸、乙醚丙酮萃取的方法合成了5种Keggin型硅钼钒杂多酸,分别用红外光谱(IR)检测到700~1100 cm -1范围内的4个特征吸收峰,X射线衍射(XRD )表征了硅钼钒杂多酸的二级结构,通过热重分析(T G )确定了杂多酸中结晶水的数目。
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关键词:
- Keggin型硅钼钒杂多酸 /
- 合成 /
- 表征
Abstract: In this paper ,five kinds of Keggin-type Si-Mo-V heteropolyacids have been synthesized in the modified method that gradually adding acid ,extracted by acetone-ether .Four characteristic peak of Keg-gin-type in 700-1 100 cm -1 have been observed by infrared ray .These condary structures of heteropolyac-ids have been characterized by XRD .The number of crystalliferous water in the products are determined by TG .
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