【摘要】 本文利用循环V-A法（CV）研究了Nd³⁺在液体Ga电极上还原的电化学反应动力学。结果表明,Nd³⁺在Ga电极上的还原是分步进行的。第一步在较高的电位扫描速度下为扩散控制的可逆电荷传递反应,即Nd³⁺+e?Nd²⁺;在电位扫描速度较低时,随后的化学反应为第一步反应的控制步骤,即Nd³⁺+e?快Nd²⁺+mCl→慢NdCl_m^2-m。第二步为不可逆的电荷传递反应,即沉积的金属Nd与Ga合金化,Nd²⁺+2e→Nd（Ga）。估算了该反应的标准反应速度常数为7.0×10^-3cm/s。更多还原

【Abstract】 The kinetics of electrochemical reaction of Nd³⁺ reduced on liquid Gaelectrode has been studied by cyclic voltammetry （CV） in molten chloride at 1073K.The results show that the reduction of Nd³⁺? on Ga electrode proceeds in consequenttwo steps. For the first step, it is found to be a diffusion controlled reversible re-action at higher rate of potential scan, i. c., Nd³⁺+e=Nd²⁺ and an irreversible rea-ction controlled by following chemical reaction at lower rate, i. c., Nd³⁺+e?Nd²⁺+mCl NdCl’_m^-m. For the second step, alloying reaction of deposited Nd with Ga canbe observed and the reaction is found to irreversible, Nd²⁺+2e→Nd（Ga）. The stand-ard rate constant of this reactiin is estimated to be 7.0×10^-3 cm/s.更多还原