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| Synthesis, Characterization and Transformation of Two Polymolybdates Raw Material |
| Received:June 14, 2023 Revised:December 13, 2023 |
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| DOI：10.3969/j.issn.2095-1035.2024.04.018 |
| KeyWord:Polyoxometalate;TBA2[Mo6O19];TBA4[α-Mo8O26];ESI-MS |
| Author | Institution |
| wangqianqian |
山西医科大学汾阳学院 |
| WANG Hai |
山西医科大学 第二医院 |
| CAO Jie |
北京理工大学 |
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| Abstract: |
| In order to provide more basic information for the study of the reaction mechanism in the synthesis process of polyacid compounds, and to expand the structural fingerprint of the same polyacid salt. In this paper, two common reactants TBA2[Mo6O19] and TBA4[α-Mo8O26] for the synthesis of multi Molybdate compounds as the research object, two compounds were synthesized using Na2MoO4 as the basic raw material. Their solid structures were characterized by IR, and their solution behavior was studied using ESI-MS. The results indicate that the presence of TBA2[Mo6O19] in solution is different from that of bare polyanions, and TBA4[α-Mo8O26] mainly exists in solution in the form of low nuclear molybdenum clusters formed after degradation, with {Mo4} having the highest content. The study on the mutual conversion relationship between two compounds shows that TBA4[α-Mo8O26] solution can be successfully converted into TBA2 [Mo6O19] by adding acid, and temperature has no significant effect on this conversion process. The reverse reaction process of convertting to TBA4[α-Mo8O26] was not successfully by adding alkali to TBA2[Mo6O19] solution. The structure fingerprints of two polymolybdates were obtained by ESI-MS and IR characterization. The research on the conversion of two kinds of polymolybdates has supplemented a feasible scheme for the mutual conversion of polyacid compounds, and provided more abundant basic information for the research on the reaction mechanism of the synthesis process of polyacid compounds. |
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