Extraction properties for U(VI) by the 25, 27-dihydroxy-26, 28-dimercaptoethoxy-5, 11, 17, 23-tetra-tert-butyl calix[4]arene

Fang zhu Xiao, Yi qiu Pu, Cheng Wang, Yu li Xu, Kang Zhang, Chun Hsing Ho, Guo wen Peng, Shu ya He

Research output: Contribution to journalArticle


The p-tert-butyl calix[4]arene thiophenol derivative was successfully synthesized with reflux condition and was characterized by FT-IR and 1H-NMR. This work mainly adopted the method of controlling variables. The results showed that the optimum pH value, temperature and extraction time were respectively 4.5, 25 °C and 90 min. By calculating the data of the enthalpy change and gibbs free energy, indicating that the process of reaction was an exothermic and spontaneous process, and it demonstrated a close agreement with pseudo-second-order kinetic model. It is also found that the coexisting cations on the extraction of uranium had greater influence.

Original languageEnglish (US)
Pages (from-to)49-55
Number of pages7
JournalJournal of Radioanalytical and Nuclear Chemistry
Issue number1
StatePublished - Jul 15 2019



  • Coexisting cation
  • Gibbs free energy
  • p-tert- butyl calix[4]arene
  • Thiophenol

ASJC Scopus subject areas

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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