In situ FT-IR microscopic investigationof metal substituted AIPO4-5 single crystals

Share/Save/Bookmark

Müller, G.A. and Bodis, J. and Mirth, G.C. and Kornatowski, J. and Lercher, J.A. (1997) In situ FT-IR microscopic investigationof metal substituted AIPO4-5 single crystals. Journal of Molecular Structure, 410-41 . pp. 173-178. ISSN 0022-2860

[img]
Preview
PDF
487Kb
Abstract:First direct spectroscopic evidence for the existence of Brønsted acid sites in AlPO4-5 (AFI) single crystal molecular sieves substituted with divalent metal cations is reported. Ammonia and pyridine were used as probe molecules. Compared with unsubstituted AlPO4-5 single crystals, the metal substituted samples exhibit well-developed bands of isolated hydroxyl groups and a broad absorption band indicating the existence of hydrogen bonded OH groups. Upon adsorption of pyridine on the metal substituted samples the formation of a new, relatively free vibrating hydroxyl group (¿oh = 3690¿3694 cm¿1 was observed, giving evidence for a strong Lewis type interaction leading to the cleavage of a metal-oxygen bond close or at the position of the substituting metal cation.
Item Type:Article
Copyright:© 1997 Elsevier Science
Research Group:
Link to this item:http://purl.utwente.nl/publications/10198
Official URL:http://dx.doi.org/10.1016/S0022-2860(96)09578-6
Export this item as:BibTeX
EndNote
HTML Citation
Reference Manager

 

Repository Staff Only: item control page

Metis ID: 105542