Mechanism of extracting palladium(Ⅱ) with cyclic sulfoxide derivatives  

作　　者：吴松平 孟淑媛 古国榜 庄志强 刘会冲 

机构地区：[1]College of Material Science and Engineering, South China University of Technology [2]Guangdong Fenghua Advanced Technology (Holding)Co. Ltd, Zhaoqing 526020, China [3]Guangdong Fenghua Advanced Technology (Holding)Co. Ltd

出　　处：《中国有色金属学会会刊：英文版》2004年第1期202-207,共6页Transactions of Nonferrous Metals Society of China

摘　　要：The extraction ability of palladium(Ⅱ) from acidic media with cyclic sulfoxide derivatives-α Dodecyl tetrahydrothiophene 1 Oxide (DTMSO), α octyl tetrahydrothiophene 1 Oxide (OTMSO) and α butyl tetrahydrothiophene 1 Oxide (BTMSO) was investigated. The extracting efficiency of cyclic sulfoxide derivatives decreased with the increasing of acidity in the lower acidity, and the efficiency became stable with the change of acidity in the higher acidity. The extraction reaction of palladium(Ⅱ)with DTMSO is exothermic, and extraction reaction of palladium(Ⅱ)is endothermic when OTMSO or BTMSO were used as extracting reagents. The coordination number was studied by slope method. The results indicate that coordination number is 2, and the composition of complex is (PdCl 2)·2RTMSO. FT IR spectra were used to analyze the structure of complex and coordinated atom in complex, Pd is coordinated with both oxygen and sulfur atom in S=O group in sulfoxide derivatives.The extraction ability of palladium(Ⅱ) from acidic media with cyclic sulfoxide derivatives-α Dodecyl tetrahydrothiophene 1 Oxide (DTMSO), α octyl tetrahydrothiophene 1 Oxide (OTMSO) and α butyl tetrahydrothiophene 1 Oxide (BTMSO) was investigated. The extracting efficiency of cyclic sulfoxide derivatives decreased with the increasing of acidity in the lower acidity, and the efficiency became stable with the change of acidity in the higher acidity. The extraction reaction of palladium(Ⅱ)with DTMSO is exothermic, and extraction reaction of palladium(Ⅱ)is endothermic when OTMSO or BTMSO were used as extracting reagents. The coordination number was studied by slope method. The results indicate that coordination number is 2, and the composition of complex is (PdCl 2)·2RTMSO. FT IR spectra were used to analyze the structure of complex and coordinated atom in complex, Pd is coordinated with both oxygen and sulfur atom in S=O group in sulfoxide derivatives.

关 键 词：炼钯 萃取机制 亚砜 衍生物 萃取剂 DTMSO BTMSO 

分 类 号：TF836[冶金工程—有色金属冶金]