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 journalArticlepeer-review

Abstract

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
Volume211
Issue number1
DOIs
StatePublished - Jan 1 1992

Keywords

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

ASJC Scopus subject areas

  • Condensed Matter Physics

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