石油亚砜萃取钯(Ⅱ)性能和机理研究  

Study on Extraction Properties and Mechanism of Pd(Ⅱ) with Petroleum Sulfoxide

作　　者：张安运[1] 

机构地区：[1]陕西师范大学化学系,西安710062

出　　处：《稀有金属》2000年第5期360-363,共4页Chinese Journal of Rare Metals

摘　　要：研究了HNO3中中性萃取剂石油亚砜萃取钯 (Ⅱ )的性能。通过考察萃取剂浓度、溶液酸度和温度对钯 (Ⅱ )萃取平衡的影响 ,确定了萃取机理 ,求得了萃取反应平衡常数和有关热力学参数 ;验证了萃取体系对钯 (Ⅱ )的萃取动力学过程为一级反应。The extraction properties and mechanism of Pd(Ⅱ) with petroleum sulfoxide (PSO) which is a neutral extractant were studied in nitric acid solution.By investigating the influence of concentration of PSO and acidity on the reaction,the composition of extracted complex was determined as Pd(NO 3) 2·2PSO.The extraction equilibrium constant and the parameters of thermodynamic were also calculated.Meanwhile,the first order reaction with respect to the concentration of Pd(Ⅱ) was verified.

关 键 词：溶剂萃取 石油亚砜 钯 萃取机理 萃取剂 

分 类 号：TF836.042[冶金工程—有色金属冶金]