Magic angle spinning ²⁹Si and ²⁷Al NMR study of mordenite dealumination

Download
  1. (PDF, 524 KB)
  2. Get@NRC: Magic angle spinning ²⁹Si and ²⁷Al NMR study of mordenite dealumination (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1007/BF00656822
AuthorSearch for: ; Search for: ; Search for:
TypeArticle
Journal titleJournal of Inclusion Phenomena
Volume1
Issue2
Pages193198; # of pages: 6
SubjectMagic angle spinning ²⁹Si NMR; Magic angle spinning ²⁷Al NMR; Sodium mordenite; Zeolites
AbstractMagic angle spinning ²⁹Si NMR presents a rapid qualitative method of assessing the degree of dealumination of sodium mordenite modified by acid leaching and heat treatment. A quantitative determination of the ²⁹Si coordination sphere is hampered by the overlap of chemical shift ranges for Si-O-A1 and Si-O-H species. MAS ²⁷Al NMR indicates the presence of oetahedrally coordinated A1 in interstitial sites in all treated samples. On treating mordenite samples at high temperatures (~700°C) much of the A1 becomes invisible to the NMR experiment because of its location in sites of low symmetry and large quadrupole coupling constant.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NRC number22736
NPARC number15657361
Export citationExport as RIS
Report a correctionReport a correction
Record identifiere6b16c24-3a8d-41ca-af9d-61759e6ce55b
Record created2010-06-11
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)