何喜红;王薪尧;崔雅茹;李倩;李林波;

• 1:西安建筑科技大学冶金工程学院

摘要(Abstract)：

研究了以氯化胆碱和苯基次膦酸组成的低共熔溶剂(DES)浸出Ni_2O_3、NiO、Co_2O_3和CoO的性能，考察了浸出时间、液固体积质量比和温度对氧化物浸出率的影响，利用对数定律方程分析了浸出动力学，采用紫外-可见吸收光谱和红外吸收光谱分析了浸出机制。结果表明：延长浸出时间，增大液固体积质量比，升高浸出温度，均可提高氧化物浸出率；相同条件下，DES对Ni_2O_3和Co_2O_3的浸出率分别高于对NiO和CoO的浸出率；浸出过程受化学反应控制，Ni_2O_3、NiO、Co_2O_3和CoO的浸出反应表观活化能分别为111、94.0、82.3和65.0 kJ/mol; Ni_2O_3、NiO浸出液中，Ni均以正二价形式存在，配位构型为八面体，■参与了配位；Co_2O_3和CoO浸出液中，Co均以正二价形式存在，配位构型为四面体，■也参与了配位。

关键词(KeyWords)： 低共熔溶剂;苯基次膦酸;Ni_2O_3/NiO;Co_2O_3/CoO;浸出;动力学;机制

Abstract:

Keywords:

基金项目(Foundation): 陕西省自然科学基础研究计划项目(2021JM-370)

作者(Authors): 何喜红;王薪尧;崔雅茹;李倩;李林波;

DOI: 10.13355/j.cnki.sfyj.2022.03.004

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