Driving the Active Site Incorporation in Zeolitic Materials via the Organic Structure-Directing Agent Through Development of H-Bonds with Hydroxyl Groups.
active site distribution
aluminophosphate
refinement
structure-directing agent
zeolite
Journal
Chemistry (Weinheim an der Bergstrasse, Germany)
ISSN: 1521-3765
Titre abrégé: Chemistry
Pays: Germany
ID NLM: 9513783
Informations de publication
Date de publication:
26 Jul 2022
26 Jul 2022
Historique:
received:
04
03
2022
pubmed:
6
5
2022
medline:
29
7
2022
entrez:
5
5
2022
Statut:
ppublish
Résumé
(1S,2S)-N-methyl-pseudoephedrine (MPS) was used as organic structure-directing agent (OSDA) for the synthesis of Mg-doped nanoporous aluminophosphates. This molecule displays a particular conformational behavior, where the presence of H-bond donor and acceptor groups provide a rigid conformational space with one asymmetric conformation preferentially occurring. MPS drives the crystallization of Mg-containing AFI materials. Characterization of these materials shows that the OSDA incorporate as protonated species, arranged as head-to-tail monomers. Combination of three-dimensional electron diffraction with high-resolution synchrotron powder X-ray diffraction allowed to locate both the Mg and the organic species. Interestingly, results showed that the spatial incorporation of Mg is driven by the hydroxyl groups of the organic cation through the development of H-bonds with negatively-charged MgO
Identifiants
pubmed: 35510690
doi: 10.1002/chem.202200702
pmc: PMC9400953
doi:
Substances chimiques
Zeolites
1318-02-1
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e202200702Subventions
Organisme : Agencia Española de Investigación, MCIN/AEI/10.13039/501100011033
ID : PID2019-107968RB-I00
Organisme : Knut och Alice Wallenbergs Stiftelse
ID : 3DEM-NATUR
Informations de copyright
© 2022 The Authors. Chemistry - A European Journal published by Wiley-VCH GmbH.
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