EXAFS investigation of divalent metal ion substituted AlPOs

G. Sankar*, J. M. Thomas, P. A. Wright, P. A. Barrett, G. N. Greaves, C. R.A. Catlow

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Divalent metal ions, cobalt and zinc, substituted in three aluminophosphates structures (MeAPO-5, -18 and -36) have been characterised by EXAFS. The local structure of the three as-prepared materials were closely similar irrespective of the framework structure for the same concentration of Me2+ ion. The CoO bond distances are sensitive to the degree of oxidation of the heteroatom in the cobalt-substituted materials, increasing in the order: CoAPO-18 < CoAPO-36 < CoAPO-5 EXAFS analysis suggests that, in the reduced catalysts (CoAPO-18 and calcined ZnAPO-18), there are three short and one long bond associated with Me2+O of the Brønsted acid centre.

Original languageEnglish
Pages (from-to)37-40
Number of pages4
JournalNuclear Inst. and Methods in Physics Research, B
Volume97
Issue number1-4
DOIs
Publication statusPublished - 2 May 1995

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