Architecture of the Ti(IV) Sites in TiAlPO-5 Determined Using Ti K-Edge X-ray Absorption and X-ray Emission Spectroscopies

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• 作者：Erik Gallo ; Andrea Piovano ; Carlo Marini ; Olivier Mathon ; Sakura Pascarelli ; Pieter Glatzel ; Carlo Lamberti ; Gloria Berlier
• 刊名：Journal of Physical Chemistry C
• 出版年：2014
• 出版时间：June 5, 2014
• 年：2014
• 卷：118
• 期：22
• 页码：11745-11751
• 全文大小：364K
• 年卷期：v.118,no.22(June 5, 2014)
• ISSN：1932-7455

文摘

X-ray absorption and emission spectroscopies, supported by quantum mechanical calculations, were used to determine the architecture of Ti(IV) sites in Ti aluminophosphate AlPO₄-5. The chemical sensitivity of the K尾_2,5 X-ray emission lines of Ti was exploited to monitor its local environment, proving that it mainly substitutes P in the framework, with a not negligible fraction substituting Al. Local structure of the substituted sites was found to be considerably deformed with respect to the AlPO₄-5 original framework.