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Published on: January 17, 2020
The architecture of Mg(II) centres in MAPO-36 solid acid catalysts
G Sankar1, D Gleeson, C R Catlow
1Davy Faraday Research Laboratory, The Royal Institution of Great Britain, London. sankar@ri.ac.uk
Abstract:
The local structure around Mg2+ ions of a Magnesium substituted aluminophosphate, with the ATS structure (MgAPO-36, Mg/P=0.08), in the as-prepared and calcined state has been investigated by Mg K-edge XAS spectroscopy. High quality XAS data were collected using the solid-state fluorescence detector. Mg2+ is found to replace tetrahedrally co-ordinated Al3+ in the as-prepared state and remained intact even after calcination, thus yielding a highly active, solid acid catalyst.
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