| 基于H3PW12O40·xH2O和3，5-二氨基-1，2，4-三氮唑的POMOF的合成、表征及催化氧化碘离子性能 | |
| POMOF based on H3PW12O40·xH2O and 3,5-diamino-1,2,4-triazole: Synthesis, characterization, and catalytic oxidation performance for iodine ion | |
| 摘要: 采用水热法合成了一例结构新颖且罕见的Keggin型多金属氧酸盐基金属有机骨架化合物，即[Cu4（3，5-datrz）4][PWⅥ9WⅤ3O39]·H2O （1），其中3，5-datrz=3，5-二氨基-1，2，4-三氮唑，并通过单晶X射线衍射、傅里叶变换红外光谱、热重分析、粉末X射线衍射和元素分析进行了表征。单晶X射线衍射分析表明：化合物1属于单斜晶系，空间群为C2/c，不对称结构包含2个Cu+、2个3，5-datrz配体、0.5个Keggin型磷钨酸阴离子和1个水分子，除结晶水外各组分之间通过共价键连接成Keggin型多金属氧酸盐基金属有机骨架化合物。以化合物1为非均相催化剂，在温度为55℃时催化H2O2氧化碘离子反应。结果表明，1催化下的碘单质生成速率为6.11×10-7 mol·L-1·s-1，且重复使用次数达到6次时转化率仍能高达99.6%。 | |
| 关键词: 多金属氧酸盐 金属有机骨架 晶体结构 催化性能 | |
| 基金项目: 国家自然科学基金（No.21862005）、贵州省科技厅计划项目（黔合基础[2019]1457，黔科合支撑[2019]2835，黔科合平台人才[2018]5769）和贵州省教育厅青年科技人才成长项目（黔科合KY字[2018]126）资助。 | |
| Abstract: A novel and rare case of Keggin-type polyoxometalate-based metal-organic framework compound was synthesized by solvothermal method, namely[Cu4(3,5-datrz)4] [PWⅥ9WⅤ3O39]·H2O (1) (3,5-datrz=3,5-diamino-1,2,4-triazole). Compound 1 was characterized by single-crystal X-ray diffraction, Fourier transform infrared spectroscopy, Thermogravimetric analysis, powder X-ray diffraction, and elemental analysis. The single-crystal X-ray diffraction analysis reveals that compound 1 crystallizes in the monoclinic system with space group C2/c. The asymmetric unit contains two Cu+ ions, two 3,5-datrz ligands, one-half of Keggin-type phosphotungstic acid anions, and one water molecule. Except for lattice water, the components are linked by covalent bonding to form Keggin-type polyoxometa-late-based metal-organic framework compounds. Compound 1 was used as a heterogeneous catalyst to catalyze the oxidation of iodine ions by H2O2 at a temperature of 55℃, and the study showed that the variation of iodine generation by compound 1 was 6.11×10-7 mol·L-1·s-1, and the conversion rate could still reach as high as 99.6% when it was reused six times. | |
| Keywords: polyoxometalates metal-organic framework crystal structure catalytic performance | |
| 投稿时间：2023-04-06 修订日期：2023-08-03 | |
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| 邱双艳,郭军,张丹,卢林,张以菊,张太文.基于H3PW12O40·xH2O和3，5-二氨基-1，2，4-三氮唑的POMOF的合成、表征及催化氧化碘离子性能[J].无机化学学报,2023,39(11):2113-2120. | |
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