Studies on the Redox Properties of Rare Earth Heteropoly Tungstoarsenate K_17[Ln(As_2W_17O_61)_2]·xH_2O  

作　　者：LIU Jing-fu, WANG Guang and ZHAO Ben-liang (Department of Chemistry, Northeast Normal University, Changchun, 130024) 

出　　处：《Chemical Research in Chinese Universities》1993年第3期175-180,共6页高等学校化学研究（英文版）

基　　金：Supported by the foundation of laboratory of rare earth chemistry and physics

摘　　要：The redox properties of K17[Ln(As2W17O61)2](Ln = La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Tm or Yb) in solution were investigated using polarographic and cyclic voltammographic methods. Experimental results indicate that the heteropolyanions underwent three-step-two-electron-tungsten-reduction processes, and each reduction process was accompanied by adding two protons.The redox properties of K17[Ln(As2W17O61)2](Ln = La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Tm or Yb) in solution were investigated using polarographic and cyclic voltammographic methods. Experimental results indicate that the heteropolyanions underwent three-step-two-electron-tungsten-reduction processes, and each reduction process was accompanied by adding two protons.

关 键 词：Lanthanide heteropolytungstate Redox property HETEROPOLYANION 

分 类 号：O6[理学—化学]