Framework Ordering in Aluminophosphate Molecular Sieves Studied by 27 Al Double Rotation NMR Academic Article uri icon


  • Abstract Aluminum-27 Double Rotation NMR spectroscopy (DOR) has been used to investigate framework ordering in the aluminophosphate molecular sieves VPI-5, AIPO 4 -5, and AIPO 4 -8. Well-resolved peaks in the 27 Al DOR spectra of both hydrated and dehydrated VPI-5 allow isotropic shifts to be correlated with local framework structure. More distorted aluminum environments are reflected by broader lines in 27 Al DOR spectra of AlPO 4 -5 and AlPO 4 -8.

publication date

  • January 1, 1991