| 一例多钒酸盐杂化材料的制备及高效催化烯烃环氧化 | |
| Preparation and efficient catalysis for olefins epoxidation of a polyoxovanadate-based hybrid | |
| 摘要: 以2-(2-吡啶基)咪唑(pIM)、Co2+和NaVO3为原料，在水热条件下，制备了新的钒氧簇化合物[Co (pIM) V2O6](1)。采用X射线单晶衍射、粉末X射线衍射、傅里叶变换红外光谱和元素分析等方法对化合物进行了表征。单晶解析表明，该化合物由VO4四面体和CoO3N2四方锥通过氧原子共边、共角连接成二维结构。基于钒氧簇在催化氧化体系中的高效活性，1作为非均相反应的催化剂，在以H2O2为氧化剂的催化烯烃环氧化反应中表现出优秀的催化性能，催化剂能够多次重复使用且活性基本保持不变。此外，磁化率研究表明1中存在反铁磁相互作用。 | |
| 关键词: 多钒酸盐 非均相催化剂 烯烃环氧化 磁性 | |
| 基金项目: 山西省应用基础项目(No.202203021222296)、山西省高等学校科技创新项目(No.2023L254，2022L425)、大同市重点研发计划项目(No.2023003)和山西大同大学校级项目(No.2017-B-04，2019-B-11，2022Q24)资助。 | |
| Abstract: A new polyoxovanadate compound [Co(pIM)V2O6] (1) was hydrothermally synthesized, where pIM stands for 2-(2-pyridyl)imidazole. For its characterizations, an integration of X-ray single crystal diffraction, powder X-ray diffraction, Fourier transform infrared spectra, and elemental analysis was accomplished. The compound exhibited a 2D architecture composed of VO4 tetrahedra and CoO3N2 square pyramids via both edge - and corner - sharing. Considering the excellent catalytic oxidation features of polyoxovanadate, compound 1 was used as an efficient heterogeneous catalyst for the epoxidation of olefins with H2O2 as an oxidant, and could be reused without consuming activity. Besides, the magnetic studies indicated the antiferromagnetic interactions in 1. | |
| Keywords: polyoxovanadate heterogeneous catalysts olefins epoxidation magnetism | |
| 投稿时间：2023-10-09 修订日期：2023-10-09 | |
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| 李宁,杜思宇,王雪怡,杨辉,周涛,关致敏,费鹏,马宏芳,蒋尚.一例多钒酸盐杂化材料的制备及高效催化烯烃环氧化[J].无机化学学报,2024,40(4):799-808. | |
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