A high-pressure NMR investigation of reaction chemistries in a simple salt hydrate

Clement R. Yonker, John C. Linehan

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Ionic liquids are currently being used in combination with supercritical fluids for catalytic reactions due to the ease of extraction of reaction products by fluids from such bi-phasic systems. In this investigation we report interesting chemistry involving a simple salt hydrate, tetramethylammonium fluoride tetrahydrate, [(CH3)4N]F·4H2O, as a neat melt and dissolved in methanol in contact with supercritical and subcritical CO2. This hydrate is proposed as a simulant for more complex ionic liquids, to investigate any potential secondary reaction chemistry in these solvent systems with carbon dioxide. Evidence is presented for the formation of methylcarbonate, CH3O(C=O)O-, and fluoromethane, CH3F, in solution when the salt hydrate is in contact with methanol and CO2.

Original languageEnglish
Pages (from-to)257-263
Number of pages7
JournalJournal of Supercritical Fluids
Issue number3
Publication statusPublished - May 2004


  • High-pressure NMR
  • Ionic liquid
  • Methylcarbonate
  • Salt hydrate
  • Supercritical fluids

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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