Cu(2)-ポリビニルアルコ-ル錯体とCa(2)-エチレンジアミン四酢酸との水溶液中における金属交換反応の動力学〔英文〕

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The kinetics of metal exchange reaction between Cu(II)-poly(vinyl alcohol) (PVA) complex and Ca(II)-ethylenediamine-N, N, N´, N N´-tetraacetic acid (Ca(II)-EDTA) have been studied by the mixing both solutions in a spectrophotometer at pH 9.7-11.0, at μ=0.10 (KNO3) and at 25℃. The reaction is initiated by the formation of unstable Cu(II)-H-PVA by the attack of H+ to Cu (II)-PVA, and the both ligand exchange and the metal exchange step occur, the latter may be rate-determining.-d [Cu(II)-PVA]／dt=k[Cu(II)-PVA] [H+] [PVA]／[Ca(II)-EDTA], where k=k1+k2´[H+], k1=3.85×10-2sec-1, k2= k´2･K-H Cu(II)-H-PVA=9.59×105 1 mol-1 sec-1.
長野県短期大学の論文