| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5386885 | Chemical Physics Letters | 2010 | 6 Pages |
Abstract
Dehydrated aluminumdodecatungstophosphate (AlPW12O40) was investigated by 27Al MAS NMR spectroscopy in magnetic fields of 9.4 and 17.6 T. Two kinds of octahedrally coordinated, two kinds of penta-coordinated, and a small amount of tetrahedrally coordinated aluminum cations were found. Comparison with 1H MAS NMR spectroscopic studies indicates that the dehydroxylation of aluminum OH groups at temperatures of 473 and 573 K is accompanied by a partially irreversible change of the oxygen coordination of aluminum cations.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Arne Bressel, Jörg Frey, Urszula Filek, Bogdan Sulikowski, Dieter Freude, Michael Hunger,