Title | Solid state NMR studies of the hydration of molecular sieve AlPO-36 |
Publication Type | Book Chapter |
Year of Publication | 2004 |
Authors | Fyfe, CA, Bretherton, JL, Skibsted, J, Zahedi-Niaki, MH, Kalliaguine, S |
Editor | VanSteen, E, Claeys, M, Callanan, LH |
Book Title | Recent Advances in the Science and Technology of Zeolites and Related Materials, Pts a - C |
Series Title | Studies in Surface Science and Catalysis |
Volume | 154 |
Pagination | 1238-1245 |
Publisher | Elsevier Science Bv |
City | Amsterdam |
ISBN Number | 0167-29910-444-51805-3 |
Keywords | AlPO-36, aluminophosphate molecular sieves, NMR |
Abstract | Al-27 and (31)p solid state MAS NMR spectra obtained at high field for the aluminophosphate AIPO-36 show that the hydration process produces both 5- and 6-coordinate Al sites. Al-27 MQMAS spectra of the hydrated form show at least four tetrahedral aluminium sites, as well as one octahedral and one five coordinate site. 2D Al-27 /P-31 INEPT experiments show multiple connectivitics between these sites in the hydrated form but the spectra are too complex for a full and unambiguous interpretation and complementary diffraction data will have to be obtained for a more complete understanding of the hydration mechanism. |
URL | <Go to ISI>://000227357201012 |