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Site-Specific Iron Substitution in STA-28, a Large Pore Aluminophosphate Zeotype Prepared by Using 1,10-Phenanthrolines as Framework-Bound Templates.

ABSTRACT: An AlPO4 zeotype has been prepared using the aromatic diamine 1,10-phenanthroline and some of its methylated analogues as templates. In each case the two template N atoms bind to a specific framework Al site to expand its coordination to the unusual octahedral AlO4 N2 environment. Furthermore, using this framework-bound template, Fe atoms can be included selectively at this site in the framework by direct synthesis, as confirmed by annular dark field scanning transmission electron microscopy and Rietveld refinement. Calcination removes the organic molecules to give large pore framework solids, with BET surface areas up to 540?m2 ?g-1 and two perpendicular sets of channels that intersect to give pore space connected by 12-ring openings along all crystallographic directions.

SUBMITTER: Watts AE 

PROVIDER: S-EPMC7496423 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

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Site-Specific Iron Substitution in STA-28, a Large Pore Aluminophosphate Zeotype Prepared by Using 1,10-Phenanthrolines as Framework-Bound Templates.

Watts Abigail E AE   Lozinska Magdalena M MM   Slawin Alexandra M Z AMZ   Mayoral Alvaro A   Dawson Daniel M DM   Ashbrook Sharon E SE   Bode Bela E BE   Dugulan A Iulian AI   Shannon Mervyn D MD   Cox Paul A PA   Turrina Alessandro A   Wright Paul A PA  

Angewandte Chemie (International ed. in English) 20200608 35

An AlPO<sub>4</sub> zeotype has been prepared using the aromatic diamine 1,10-phenanthroline and some of its methylated analogues as templates. In each case the two template N atoms bind to a specific framework Al site to expand its coordination to the unusual octahedral AlO<sub>4</sub> N<sub>2</sub> environment. Furthermore, using this framework-bound template, Fe atoms can be included selectively at this site in the framework by direct synthesis, as confirmed by annular dark field scanning tra  ...[more]

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