Design and synthesis of hybrid solids based on the tetravanadate core toward improved catalytic properties

Yan Hong Niu, Song Yang, Ji Kun Li, Yan Qing Xu*, Chang Wen Hu

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

8 引用 (Scopus)

摘要

Five inorganic-organic hybrid vanadates based on tetravanadate cores, transition metals and N-donor ligands have been designed and synthesized under hydrothermal conditions, namely, [Zn(eIM)3]2V4O12 (1), [Zn(pIM)3]2V4O12·H2O (2), [Zn(ipIM)3]2V4O12 (3), [Co(eIM)3]2V4O12·H2O (4), [Cu(eIM)2(H2O)]2V4O12 (5) (eIM = 1-ethylimidazole, pIM = 1-propylimidazole, ipIM = isopropylimidazole). All compounds were fully characterized by single-crystal XRD, powder XRD, elemental analysis, TGA, and FT-IR spectroscopy. The hybrid zinc vanadates (1-3) and cobalt vanadate (4) exhibit interesting 2D folded structures and the hybrid copper vanadate (5) presents a 1D chain configuration. All compounds can catalyze olefin epoxidation reactions when using TBHP (TBHP = tert-butyl hydroperoxide) as an oxidant in acetonitrile. The introduction of transition metal ions into tetravanadate cores not only improved the catalytic activity but also fulfilled the heterogeneous catalytic behavior. 1-5 all exhibit extraordinary efficiency in converting olefins to the corresponding epoxides with high conversion and selectivity (particularly, conv. up to 97.1%, sele. up to 100% for 1). Leaching test was also carried out to prove the heterogeneous behavior.

源语言英语
页(从-至)649-654
页数6
期刊Chinese Chemical Letters
27
5
DOI
出版状态已出版 - 1 5月 2016

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Niu, Y. H., Yang, S., Li, J. K., Xu, Y. Q., & Hu, C. W. (2016). Design and synthesis of hybrid solids based on the tetravanadate core toward improved catalytic properties. Chinese Chemical Letters, 27(5), 649-654. https://doi.org/10.1016/j.cclet.2016.01.007