Simultaneous quantification of Brønsted- and Lewis-acid sites in a USY zeolite

Kevin J. Sutovich, Alan W. Peters, Edward F. Rakiewicz, Richard F. Wormsbecher, Susan M. Mattingly, Karl T. Mueller

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

In this report, experimental methods and calculation procedures are described for direct and simultaneous quantification of the Brønsted- and Lewis-acid site concentrations in a sample of USY zeolite. The concentrations of both types of add sites are characterized by solid-state 31P MAS NMR spectroscopy of trimethylphosphine oxide probe molecules. The errors associated with the area measurements in the NMR spectrum, and hence the errors in the concentration measurements reported, are estimated with Monte Carlo simulations applied with spectral line-fitting and deconvolution procedures.

Original languageEnglish (US)
Pages (from-to)155-158
Number of pages4
JournalJournal of Catalysis
Volume183
Issue number1
DOIs
StatePublished - 1999

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Physical and Theoretical Chemistry

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