NMR characterization of bronsted acid sites in faujasitic zeolites with use of perdeuterated trimethylphosphine oxide

Murthy D. Karra, Kevin J. Sutovich, Karl T. Mueller

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

The interactions of Bronsted acid sites of H-Y (FAU) with perdeuterated trimethylphosphine oxide (TMPO-d9) are studied with a set of high-resolution solid-state NMR experiments. Double- and triple-resonance MAS NMR techniques (such as CP, TRAPDOR, and REDOR) verify that the lines in the 31P MAS NMR spectrum are indeed from TMPO interacting with Bronsted acid sites. Replacement of acidic hydrogens in the sodalite cages with sodium cations results in the disappearance of one of the peaks, leading to final assignments of the resonances.

Original languageEnglish (US)
Pages (from-to)902-903
Number of pages2
JournalJournal of the American Chemical Society
Volume124
Issue number6
DOIs
StatePublished - Feb 12 2002

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Zeolites
Nuclear magnetic resonance
Acids
Oxides
Cations
Hydrogen
Sodium
Positive ions
trimethylphosphine oxide
3,3,5,5-tetramethyl-1-pyrroline N-oxide
Experiments
2'-disulfonic acid 1-amino-8-nephthol-2

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

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abstract = "The interactions of Bronsted acid sites of H-Y (FAU) with perdeuterated trimethylphosphine oxide (TMPO-d9) are studied with a set of high-resolution solid-state NMR experiments. Double- and triple-resonance MAS NMR techniques (such as CP, TRAPDOR, and REDOR) verify that the lines in the 31P MAS NMR spectrum are indeed from TMPO interacting with Bronsted acid sites. Replacement of acidic hydrogens in the sodalite cages with sodium cations results in the disappearance of one of the peaks, leading to final assignments of the resonances.",
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NMR characterization of bronsted acid sites in faujasitic zeolites with use of perdeuterated trimethylphosphine oxide. / Karra, Murthy D.; Sutovich, Kevin J.; Mueller, Karl T.

In: Journal of the American Chemical Society, Vol. 124, No. 6, 12.02.2002, p. 902-903.

Research output: Contribution to journalArticle

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