SYNTHESIS OF 1H-1,2,4-TRIAZOLE-3-THIOL RESIN AND ITS SORPTION BEHAVIOR FOR PLATINUM AND GOLD IONS
(1.Department of Chemistry, Central South University of Technology, Changsha 410083
2.Institute ofEvironmental Protection, Hunan University, Changsha 410082
3.Department of Chemistry, Hangzhou University, Hangzhou 310028)
2.Institute ofEvironmental Protection, Hunan University, Changsha 410082
3.Department of Chemistry, Hangzhou University, Hangzhou 310028)
Abstract: The optimum conditions for synthesis of 1H-1,2,4-triazole-3-thiol resin (TATR) are as follows:molar ratio of SH∶Cl=2.5∶l in DMF, reaction temperature 80℃, reaction time 8 h. The functional group of TATR is 3.77 mmol FG/g resin. The structure of the resin has been confirmed by elementary analysis, FT-IR and XPS. The sorption capacities of TATR for Au(Ⅲ), Pt(Ⅳ) are as high as 3.71, 0.76mmol ion/g resin, respectively. The apparent activation energy of sorption of TATR for Au (Ⅲ) is 14.6kJ/mol.
Key words: 1H-1,2,4-triazole-3-thiol resin sorption gold platinum