| 钨钼钒硅杂多酸盐的合成及表征 |
| SYNTHESIS AND IDENTIFICATION OF TUNGSTOMOLYBDOVANADOSILICATE |
|
| 摘要: 本文合成了一类未见报道的含三种齿顶原子的钨钼钒硅酸四丁基铵(TBA)盐,它们是:(TBA)4[HSiW9Mo2VO40]和(TBA)4[H2SiW9MoV2O40]。红外光谱与已知的β-(TBA)4[SiW9Mo3O40]相 |
| 关键词: 合成 杂多酸 钨钼钒硅酸盐 |
| 基金项目: 国家科学基金资助项目 |
| Abstract: A new type of polymetalatosilicate which contains three different metals-tungsten,molybdenum and vanadium-has been prepared. The compound β-Na9[HSiW9O34]·23H2O which has vacant addend sites was first prepared by the reaction of Na2WO4·2H2O and Na2SiO3·9H2O. Then appropriate amounts of molybdate and vanadate were added to form products of precise Keggin structure. Two new tungstomolybdovanado-silicate compounds were obtained,and elemental analysis gave their composition as: (TBA)4[HSiW9Mo2VO40] and (TBA)4 [H2SiW9MoV2O40] (TBA stands for tetrabutylammonium). The IR spectra of both compounds are similar to that of the well-known β-(TBA)4[SiW9Mo3O40], so they are theβ-isomer of Keggin structure. In solid state due to the action of the complex anion, the cation TBA of the compound is somewhat deformed and as a result the C-N bond is weakened. The change of frequency of the C-N bond indicated that β-(TBA)4[H2SiW9MoV2O40] and β-(TBA)4[H3SiW9V3O40] are acidic salts. The results of X-ray diffraction and TG studies revealed that the heteropolymetalatosilicate has geometric isomer. |
| Keywords: synthesis heteropolyacid tungstomolybdovanadosilicate |
| 投稿时间：1987-10-07 |
| 摘要点击次数: 1736 |
| 全文下载次数: 1864 |
| 贾向东,柳海澄,王金晞,陈荣三.钨钼钒硅杂多酸盐的合成及表征[J].无机化学学报,1988,4(3):89-95. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
