Synthesis of ethylamine-bridged β-cyclodextrins and adsorption properties of thorium

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• 作者：Chen Hu ; Hui-jun Liu ; Long Peng ; Yun-kai Sun…
• 关键词：Ethylamine ; bridged β ; cyclodextrins ; Synthesis ; Thorium ; Adsorption
• 刊名：Journal of Radioanalytical and Nuclear Chemistry
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：308
• 期：1
• 页码：251-259
• 全文大小：956 KB
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• 作者单位：Chen Hu (1)
  Hui-jun Liu (1)
  Long Peng (1)
  Yun-kai Sun (1)
  Wei Long (1)
  
  1. College of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, Hunan, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Nuclear Chemistry
  Physical Chemistry
  Nuclear Physics, Heavy Ions and Hadrons
  Diagnostic Radiology
  Inorganic Chemistry
  
• 出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
• ISSN：1588-2780

文摘

A specialized ethylamine-bridged β-cyclodextrins (EB β-CD) was synthetized. EB β-CD’s adsorption properties of thorium ions were performed. Experimental results show that the adsorption of thorium using the EB β-CD can achieve equilibrium within 60 min at room temperature under the condition of pH 4, the adsorbance is 10.49 mg g−1. The results of SEM and BET nitrogen adsorption show that, EB β-CD is typical mesoporous material. According to pseudo-second-order kinetics, the adsorption of Th(IV) indicating the influence of textural properties of EB β-CD on the rate of adsorption. The thermodynamic parameters obtained showed that the adsorption process is exothermic, spontaneous process.