2-氨基-5-巯基-1,3,4-硫二氮唑树脂的合成及其对铂族金属和金离子的吸附性能研究(英文)  

Synthesis of 2-Amino-5-Mercapto-1, 3, 4-Thiadiazole Resin and its Sorption Behavior for the Platinum Group and Gold Ion

作　　者：袁兴中[1] 陈晓青[2] 陈义镛[3] 

机构地区：[1]湖南大学环境保护研究所,长沙410082 [2]中南工业大学化学系,长沙410083 [3]杭州大学化学系,杭州310028

出　　处：《应用基础与工程科学学报》1995年第3期16-23,共8页Journal of Basic Science and Engineering

基　　金：Project is finnanced by the Fond from National Natural Science Foundation of China

摘　　要：合成了2-氨基-5-巯基-1,3,4-硫二氮唑树脂;研究了各因素对合成反应影响,用DMF做溶剂,最佳试剂摩尔比、反应时间、反应温度分别为SH/Cl=3/1、10h、80℃;树脂的功能基含量为3.24mmol FG/g树脂,用FT-IR及XPS表征了树脂的结构,进行了树脂吸附性能的研究,树脂对Au(Ⅲ)、Pt(Ⅳ)、Ru(Ⅲ)、Pd(Ⅱ)、Os(Ⅵ)、Ir(Ⅳ)的吸附容量分别高达4.04、1.02、1.5、2.32、0.83、1.02mmol离子/g树脂;测定了吸附速度曲线,树脂吸附金离子的表观活化能为17.0kJ/mol;用XPS研究了树脂吸附金的机理。The optimum condition for synthesis of 2-amino-5-mercapto-1, 3, 4-thiadiazole resin (AMTR) is molar ratio of reagants, SH/C1 = 3/1, reaction temperature 80℃. reaction time 10h and DMF used as a solvent. The functional group capacity of AMTR is 3. 24mmol FG/g resin. The structure of the resin was confirmed by elementary analysis. FT-IR and XPS. The sorption capacities of AMTR for Au (Ⅲ), Pd ( Ⅱ), Ru (Ⅲ), Os (Ⅵ). Pt (Ⅳ), Ir (Ⅳ), are as high as 4. 04, 1. 5, 2. 32, 0. 83, 1. 02. 1. 34 mmol ion/g resin, respectively. The apparent activation energy of sorption of AMTR for Au (Ⅲ) is 17. OkJ/mol. The sorption mechanism was examined by X-ray photoelectron spectra.

关 键 词：2-氨基-5-巯基-1 3 4-硫二氮唑树脂 吸附 金 铂族金属 

分 类 号：O647.3[理学—物理化学]