摘要
用化学分析和红外光谱研究了XSD-296树脂吸附和解吸铼的性能及机理。结果表明,树脂对Re(Ⅶ)的吸附在pH=3.2的HAc-NaAc缓冲溶液中最佳,静态饱和吸附容量为330.4 mg/g树脂,等温吸附服从Freun-dlich经验式,吸附速率常数k298=3.83×10-4/s。用2.0 mol/L硫氰酸铵溶液或2.0 mol/L高氯酸溶液作解吸剂能定量洗脱。吸附机理表明,树脂功能基与Re(Ⅶ)发生了配位键合。
Properties and mechanism of Re（Ⅶ） adsorption onto XSD-296 resin were studied by using chemical methods and IR spectrometry.Experimental results show that XSD-296 resin has a good adsorption ability for Re（Ⅶ） at pH=3.2 in the HAc-NaAc medium.The static saturation adsorption capacity is 330.4 mg/g.The adsorption behavior obeyed the Freundlich empirical equation and the adsorption rate constant k298 was 3.83×10-4 /s.Re（Ⅶ） adsorbed on resin can be eluted by 2.0 mol/L NH4SCN or 2.0 mol/L HCIO4 quantitatively.Infrared spectra and adsorption mechanism show that the functional group of resin is coordinated with Re（Ⅶ） to form co-ordination compound.
出处
《矿物学报》
CAS
CSCD
北大核心
2011年第2期302-306,共5页
Acta Mineralogica Sinica
基金
国家自然科学基金项目(批准号:30972405)
浙江省自然科学基金项目(Y3090531)
关键词
铼
XSD-296树脂
吸附
解吸
吸附容量
rhenium
XSD-296 resin
adsorption
desorption
adsorption capacity
