二-(2-乙基己基)膦酸(P204)-熔融石蜡对金属铜的固液萃取研究  

Solid-liquid extraction of copper with di(2-ethylhexyl) phosphoric acid into molten paraffin wax

作　　者：陈慧[1] 万建新[1] 彭波[1] 张彰[1] 郭效军[1] 严军[1] 

机构地区：[1]西北师范大学化学化工学院,甘肃兰州730070

出　　处：《西北师范大学学报（自然科学版）》2009年第2期49-53,共5页Journal of Northwest Normal University(Natural Science)

基　　金：甘肃省自然科学基金资助项目(2007GS03562);西北师范大学大学生科研基金资助项目(NWNU-2007)

摘　　要：研究了用二-(2-乙基己基)膦酸(P204)-熔融石蜡在60℃对金属铜的固液萃取行为,探讨了酸度、萃取剂浓度、Cu2+浓度、稀释剂用量及搅拌时间等因素对金属铜萃取率的影响.用斜率法确定了萃取机理,测定并计算出了表观萃取平衡常数Kex和相关热力学参数.The solid-liquid extraction behavior of copper with di（2-ethylhexyl） phosphoric acid（P204） into molten paraffin wax has been studied in the paper. The effects of time to achieve equilibrium, diluent dosage, copper （II） concentration, P204 concentrotion, pH on the extraction are discussed. The stoichiometry of the extracted species of copper（II） is determined on the basis of slope analysis method. Extraction equilibrium constant and thermodynamic data are also determined and discussed.

关 键 词：固液萃取 铜 二-(2-乙基己基)膦酸(P204) 石蜡 热力学 

分 类 号：O658.2[理学—分析化学]