Site-specific iron substitution in STA-28, a large pore aluminophosphate zeotype prepared using 1,10-phenanthrolines as framework-bound templates

Abigail Elise Watts, Magdalena Malgorzata Lozinska, Alexandra Martha Zoya Slawin, Alvaro Mayoral, Daniel McLean Dawson, Sharon E. Ashbrook, Bela E. Bode, Iulian Dugulan, Mervyn Shannon, Paul Cox, Alessandro Turrina, Paul Anthony Wright

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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 AlO4N2 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.
Original languageEnglish
Pages (from-to)15186-15190
Number of pages5
JournalAngewandte Chemie International Edition
Volume59
Issue number35
Early online date8 Jun 2020
DOIs
Publication statusPublished - 17 Aug 2020

Keywords

  • Aluminophosphate
  • Zeotype
  • Framework-bound template
  • Iron substitution
  • ADF STEM

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