In Situ Monitoring of Heterogeneous Catalytic Hydrogenation via 129Xe NMR Spectroscopy and Proton MRI

Dudari B. Burueva, Ekaterina V. Pokochueva, Xinpei Wang, Max Filkins, Alexandra Svyatova, Sean P. Rigby, Chengbo Wang, Galina E. Pavlovskaya, Kirill V. Kovtunov, Thomas Meersmann, Igor V. Koptyug

Research output: Journal PublicationArticlepeer-review

5 Citations (Scopus)

Abstract

The ability to use molecular hydrogen, H2, as a buffer gas in spin exchange optical pumping of noble gases enables the production of hydrogen gas containing a low percentile (5%) of hyperpolarized (HP) 129Xe as a tracer for in situ NMR spectroscopy of hydrogenation reactions. It is demonstrated that the xenon chemical shift, observed in the porous space of Pt-containing alumina pellets, can be used to monitor the temperature changes under rapidly progressing, nonsteady-state conditions during start-up of the catalytic reaction. Standard proton MR imaging was successfully applied to provide in situ evaluation of conversion for the catalyst used in this work.

Original languageEnglish
Pages (from-to)1417-1422
Number of pages6
JournalACS Catalysis
Volume10
Issue number2
DOIs
Publication statusPublished - 17 Jan 2020

Keywords

  • NMR thermometry
  • heterogeneous hydrogenation
  • hyperpolarization
  • parahydrogen
  • xenon

ASJC Scopus subject areas

  • Catalysis
  • Chemistry (all)

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