Elucidating the nature and reactivity of Ti ions incorporated in the framework of AlPO-5 molecular sieves. New evidence from 31P HYSCORE spectroscopy

Sara Maurelli; Muthusamy Vishnuvarthan; Mario Chiesa; Gloria Berlier; Sabine Van Doorslaer

doi:10.1021/ja202210g

Elucidating the nature and reactivity of Ti ions incorporated in the framework of AlPO-5 molecular sieves. New evidence from 31P HYSCORE spectroscopy

J Am Chem Soc. 2011 May 18;133(19):7340-3. doi: 10.1021/ja202210g. Epub 2011 Apr 22.

Authors

Sara Maurelli¹, Muthusamy Vishnuvarthan, Mario Chiesa, Gloria Berlier, Sabine Van Doorslaer

Affiliation

¹ Dipartimento di Chimica IFM, Università di Torino and NIS, Nanostructured Interfaces and Surfaces Centre of Excellence, Via P. Giuria 7, I-10125 Torino, Italy.

PMID: 21513329
DOI: 10.1021/ja202210g

Abstract

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, Ti(3+) ions are formed, which exhibit large (31)P hyperfine couplings, providing direct evidence for framework substitution of reducible Ti ions at Al sites.