波谱学杂志 ›› 1989, Vol. 6 ›› Issue (3): 337-340.

• 研究论文 • 上一篇    下一篇

杂多阴离子的NMR和ESR研究——Ⅱ磷钼钒杂多酸及其镧盐的NMR

华士英1, 冷玉春2, 吴通好2   

  1. 1. 吉林大学理论化学研究所;
    2. 吉林大学化学系
  • 收稿日期:1988-06-13 出版日期:1989-09-05 发布日期:2018-01-22
  • 基金资助:
    国家自然科学基金资助项目

NMR AND ESR STUDIES OF HETEROPOLYANIONS Ⅱ NMR of Molybdovanadophosphoric Acid and Its Salts with Lanthanum

Hua Shiying1, Leng Yuchun2, Wu Tonghao2   

  1. Institute of Theoretical Chemistry, Chemistry Department, Jitin University
  • Received:1988-06-13 Online:1989-09-05 Published:2018-01-22

摘要: 具有Keggin结构的磷钼钒杂多酸及其盐是有效的氧化剂.本文通过磷钼钒杂多酸及其镧盐的31P,51V,139La,17O及1H的NMR测定,并结合红外和差热分析,说明镧的引入对Keggin结构没有影响,但镧对水分子有强的作用力,使阴离子之间存在更多的水分子,从而对催化氧化活性产生了影响.

关键词: 磷钼钒杂多酸, 镧盐, NMR, 催化氧化活性

Abstract: Molybdovanadophosphoric acid with Keggin structure and its salts are effective catalysts for oxidation reactions. Based on the NMR measurements of 31P, 51V,139La, 17O and 1H in these catalyst samples in combination with the correspondingIR and DTG determination, it is shown that the addition of lanthanum does not affect the formation of heteropolyacid with Keggin structure. However, lanthanum can exert strong action on water molecules, leading to the existence of more water molecules among the polyanions, which might probably affect catalytically oxidative activity.

Key words: Molybdovanadophosphoric Acid, Salts with Lanthanum NMR, Catalytically Oxidative Activity