Characterization of aluminum in cation-exchanged NH4NaY and USY zeolites by 27Al MAS NMR spectroscopy

David Jeffrey Aurentz, Anthony F. Tierno, Kevin J. Sutovich

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The effects of cations on the local electromagnetic environments of catalytic sites in Y-zeolites are studied as a function of cation type and concentration. Quadrupolar coupling parameters measurable using 27Al MAS NMR at multiple field strengths, provide a window to study aluminum's local electronic structure. Quadrupolar parameters calculated for framework tetrahedral aluminum are related to cation concentration and Brønsted acidity for potassium-, zinc-, and lanthanum-exchanged NH4NaY and USY zeolites.

Original languageEnglish (US)
Pages (from-to)133-137
Number of pages5
JournalCatalysis Letters
Volume132
Issue number1-2
DOIs
StatePublished - Sep 1 2009

Fingerprint

Zeolites
Aluminum
Nuclear magnetic resonance spectroscopy
Cations
Positive ions
Lanthanum
Acidity
Electronic structure
Potassium
Zinc
Nuclear magnetic resonance

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Cite this

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Characterization of aluminum in cation-exchanged NH4NaY and USY zeolites by 27Al MAS NMR spectroscopy. / Aurentz, David Jeffrey; Tierno, Anthony F.; Sutovich, Kevin J.

In: Catalysis Letters, Vol. 132, No. 1-2, 01.09.2009, p. 133-137.

Research output: Contribution to journalArticle

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