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

David J. Aurentz; Anthony F. Tierno; Kevin J. Sutovich

doi:10.1007/s10562-009-0078-9

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

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

Division of Science (Berks)

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

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 language	English (US)
Pages (from-to)	133-137
Number of pages	5
Journal	Catalysis Letters
Volume	132
Issue number	1-2
DOIs	https://doi.org/10.1007/s10562-009-0078-9
State	Published - Sep 2009

All Science Journal Classification (ASJC) codes

Catalysis
General Chemistry

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10.1007/s10562-009-0078-9

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

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 Br{\o}nsted acidity for potassium-, zinc-, and lanthanum-exchanged NH4NaY and USY zeolites.",

author = "Aurentz, \{David J.\} and Tierno, \{Anthony F.\} and Sutovich, \{Kevin J.\}",

note = "Funding Information: Acknowledgments The 300 MHz Bruker Avance NMR spectrometer was purchased using funds from the NSF (DUE 0310554) and Penn State Berks. The authors appreciate the help of Dr. David Rovnyak at the Bucknell University Regional NMR Resource (www. departments.bucknell.edu/chemistry/bu\_rnr/) for high field instrument use, Dr. Karl Mueller at Penn State University for stimulating discussions, Dr. Natia Tsomaia for Russian translation, and Eric Byrne at Penn State Berks for probe modifications.",

year = "2009",

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doi = "10.1007/s10562-009-0078-9",

language = "English (US)",

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AU - Aurentz, David J.

AU - Tierno, Anthony F.

AU - Sutovich, Kevin J.

N1 - Funding Information: Acknowledgments The 300 MHz Bruker Avance NMR spectrometer was purchased using funds from the NSF (DUE 0310554) and Penn State Berks. The authors appreciate the help of Dr. David Rovnyak at the Bucknell University Regional NMR Resource (www. departments.bucknell.edu/chemistry/bu_rnr/) for high field instrument use, Dr. Karl Mueller at Penn State University for stimulating discussions, Dr. Natia Tsomaia for Russian translation, and Eric Byrne at Penn State Berks for probe modifications.

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N2 - 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.

AB - 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.

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JO - Catalysis Letters

JF - Catalysis Letters

IS - 1-2

ER -

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

Abstract

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