| 邓谦,蔡铁军.钼钒砷杂多酸有机铵盐的合成及热稳定性研究[J].分子催化,2001,(5):374-378 |
| 钼钒砷杂多酸有机铵盐的合成及热稳定性研究 |
| Synthesis and Thermal Investigation of Amine Salts of Molydovanadoarsenic Acid |
| 修订日期：2001-02-05 |
| DOI： |
| 中文关键词: 热分解 热分析 钼钒砷杂多酸有机铵盐 合成 催化剂 热稳定性 |
| 英文关键词:Heteropolyacid,Amine salt,Thermal decomposition,Thermal analysis |
| 基金项目:湖南省教委资助项目 (湘教财字 [1999] 12号 99C2 2 7和湘教通 [1997] 2 0 0号 ) |
| 邓谦 蔡铁军 |
湘潭师范学院化学系 湖南湘潭411201
(邓谦，蔡铁军，彭振山，龙云飞，陈亚中)
，湘潭师范学院化学系 湖南湘潭411201(杜甫佑)
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| 中文摘要: |
| 合成了4个系列（14种）钼钒砷有机铵盐，用红外光谱、pH电位滴定、DAT－TG对其进行表征，确认其分子式为[RnNH4-N]4[HPA](R=Me、Et、Pr、Bu基；n＝1、2、3、4）；并采用DTA－TG、IR进行系列盐分步切断的热性质研究。发现其稳定性随烷基增大、取代基数目增多而增加；且盐的分解是分步进行的，最终产物为杂多阴离子的组成氧化物。 |
| 英文摘要: |
| Four series, fourteen amine salts of molydovanadoarsenic acid have been synthesized and characterized using IR, DTA\|TG and pH potential titration. The molecular formula of these compounds were proposed to be [R\- n NH 4- n ] 4 (R=Me? Et? Pr? Bu; n =1, 2, 3, 4). By the combination of DTA\|TG and IR, i.e. after the appearance of every DTA\|TG peak the sample was subjected to IR detection immediately after cooling. Their thermal character is investigated. The conclusion is that with the increase of the size and the number of alkyl groups, the stability of these compounds increases. The thermal decomposition occurs gradually and the final products are composite oxides of V\-2O\-5, As\-2O\-5 and MoO\-3. |
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