摘要
以对甲基苯硫酚为原料,在二氯甲烷与乙醇的混合溶液中进行硝化反应,合成一种用于回收贵重金属离子的新型螯合剂.研究结果表明:在硝化反应中,当反应物浓硝酸与对甲基苯硫酚的物质的量比为4∶1,反应温度为15℃,反应时间为3 h时,产率达48.5%;使用不同质量的产物作为螯合剂与5 mL含钴离子1 681 mg/L的废旧锂电池浸出液进行螯合实验时,螯合剂用量为0.30 g时螯合率达98.7%;使用8 mol/L的HCl溶液对螯合物进行解吸附,钴离子释放率达到83.6%.
A novel chelating agent,which can be used to recovery noble metal ions,was synthesized via nitration reaction using p-thiophenol as raw materials in the mixture of methylene chloride and ethanol.Research results showed that in the nitration reaction the maximum yield was 48.5% under the conditions as follows：the molar ratio of concentrated nitric acid to p-thiophenol 4∶1,reaction temperature 15 ℃ and reaction time 3 h;when different mass of chelating agent was used to process chelating experiment with 5 mL leaching solution of spent Li-ion batteries which contained 1 681 mg/L Co2＋,the chelating ratio reached 98.7% when the mass of chelating agent was 0.3 g;and the maximum of release ratio reached 83.6% when 8 mol/L of hydrochloric acid solution was used to de-adsorption.
出处
《晓庄学院自然科学学报》
CAS
北大核心
2011年第1期56-59,共4页
Journal of Natural Science of Hunan Normal University
基金
国家自然科学基金资助项目(50774016)
湖南省科技攻关资助项目(2008FJ3009
2010NK3002)
关键词
螯合剂
钴离子
螯合性能
chelant
cobaltion
chelating performance
