图书来源:二元合金相图及中间相晶体结构 二元合金相图及中间相晶体结构
作 者:唐仁政 田荣璋
出版时间:2009-05
定 价:320元
图书ISBN:978-7-81105-831-4
出版单位:中南大学出版社
Songping Wu and Guobang Gu College of Chemistry, South China University of Technology, Guangzhou 510641, China
摘 要:The extraction of gold (III), palladium (II), and platinum (IV) from the acidic media with the cyclic sulfoxide derivative of α-dodecyl-tetrahydrothiophene 1-oxide (dtmso) was investigated. Gold (III), palladium (II), and platinum (IV) could be separated from the acidic media with suitable sulfoxide concentration and acidity. The extraction reaction of gold (III), palladium (II) or platinum (IV) is exothermic when dtmso is used as an extracting reagent. The coordination number was studied by the slope method. The results indicate that, in high acidity, the dtmso coordination number for extracting gold (III) or palladium (II) is 3, and that for platinum (IV) is 2. UV and FT-IR spectra were used to analyze the structure of the complex. Gold (III) is coordinated with the oxygen atom in S=O group in dtmso, and palladium (II) or platinum (IV) is coordinated with the sulfur atom in S=O group in dtmso.
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