Lanthanide relaxation and shift properties as NMR probes for the location of tributylphosphate in clays

Cynthia J Hartzell, Mao Lin Hsu, Thomas Buscher, David E. Morris, P. Gary Eller

Research output: Contribution to journalArticle


The interaction of Eu3+ and tributylphosphate in the montmorillonite clay SAZ1 has been investigated by NMR spectroscopy. The 13C-NMR spectrum of TBP sorbed onto SAZ1 partially exchanged with Eu3+ shows two sets of four peaks differing by 2–3ppm. Longitudinal relaxation times for 13C-TBP sorbed to SAZ1 and Eu3+-SAZ1 (as D2O slurries) are .9s and .4s, respectively. The T1's determined by 13C-CPMAS on the solid samples are .24s and .28s, respectively. Linewidths of the CPMAS spectra of 13C-TBP sorbed to SAZ1 and Eu3+-SAZ1 are 204 Hz and 305 Hz.

Original languageEnglish (US)
Pages (from-to)227-232
Number of pages6
JournalMolecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
Issue number1
StatePublished - Jan 1 1992



  • clays
  • CPMAS of tributylphosphate
  • europium shift effects
  • montmorillonite
  • NMR
  • tributylphosphate

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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