Sodium NMR relaxation in mesoporous systems

Ravinath Kausik, Kamilla Fellah, Donghan M. Yang

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We explore the NMR relaxation of 23Na nuclei in brine confined in mesoporous controlled porous glass. Bi-exponential decays characteristic of the relaxation of the quadrupole sodium nuclei under confinements can be clearly identified and contrasted with the mono-exponential decays observed for motional narrowed bulk brine solutions. The concentration dependence of either of the bi-exponential relaxation times of confined 23Na nuclei, shows a trend opposite to that in bulk solutions. The understanding of this behavior could be fundamental for inferring sodium dynamics in bound water for oilfield formation evaluation and other applications such as monitoring the quality of building materials.

Original languageEnglish (US)
Pages (from-to)134-137
Number of pages4
JournalMicroporous and Mesoporous Materials
Volume269
DOIs
StatePublished - Oct 2018
Externally publishedYes

Keywords

  • Brine in confinements
  • Quadrupole relaxation
  • Sodium NMR
  • Sodium NMR in nanopores

ASJC Scopus subject areas

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

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