Elucidating the Nature and Reactivity of Ti Ions Incorporated in the Framework of AlPO-5 Molecular Sieves. New Evidence from P-31 HYSCORE Spectroscopy

Maurelli S; Vishnuvarthan M; Chiesa M; Berlier G; Van Doorslaer S

Journal of the American Chemical Society, Vol.133, No.19, 7340-7343, 2011

DOI10.1021/ja202210g Export Citation

Elucidating the Nature and Reactivity of Ti Ions Incorporated in the Framework of AlPO-5 Molecular Sieves. New Evidence from P-31 HYSCORE Spectroscopy

Maurelli S, Vishnuvarthan M, Chiesa M, Berlier G, Van Doorslaer S

The incorporation of Ti ions within the framework of aluminophosphate zeotype AlPO-5 and their chemical reactivity is studied by means of CW-EPR, HYSCORE, and UV-vis spectroscopies. Upon reduction, Ti3+ ions are formed, which exhibit large P-31 hyperfine couplings, providing direct evidence for framework substitution of reducible Ti ions at Al sites.