@article{911fb457e7494011a1a8c2a38f6d5bfd,
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",
month = sep,
doi = "10.1007/s10562-009-0078-9",
language = "English (US)",
volume = "132",
pages = "133--137",
journal = "Catalysis Letters",
issn = "1011-372X",
publisher = "Springer Netherlands",
number = "1-2",
}