A Combined Neutron and Synchrotron X-ray Scattering Study of a MgAl-Layered Double Oxide

Owing to their vast chemical and structural flexibility, layered double hydroxides (LDHs) are among some of the most promising materials for many catalytic applications. Thermal decomposition below 700 °C leads to the formation of a complex semiamorphous mixed metal oxide (LDO). In this study, the product of calcination of aqueous miscible organic solvent-treated AMO-[Mg<sub>0.70</sub>Al<sub>0.30</sub>(OH)<sub>2</sub>](CO<sub>3</sub>)<sub>0.15</sub>·<i>y</i>H<sub>2</sub>O·<i>z</i>EtOH at 600 °C (AMO-Mg<sub>2.33</sub>Al LDO) has been investigated using a synergistic combination of high-resolution synchrotron X-ray and neutron scattering techniques, as well as high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), solid-state NMR (ssNMR), and thermogravimetric analysis coupled with mass spectrometry (TGA-MS). The local and extended structure of AMO-Mg<sub>2.33</sub>Al LDO has been modeled by reciprocal and real space X-ray and neutron scattering analyses and is consistent with a modified rock salt structure consisting of octahedrally coordinated layers containing a small number of vacancies and the tetrahedrally coordinated Al<sup>3+</sup> sites in contrast to previous reports.

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Journal
Inorganic Chemistry
Published
2025-11-10
DOI
https://doi.org/10.1021/acs.inorgchem.5c03754
Primary Topic
Layered Double Hydroxides Synthesis and Applications
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article
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article

A Combined Neutron and Synchrotron X-ray Scattering Study of a MgAl-Layered Double Oxide

Theodosios Famprikis, Jöerg C. Neuefeind, Frederick Z.T. Yang, Chunping Chen et al.
Inorganic Chemistry
Layered Double Hydroxides Synthesis and Applications
article

A Combined Neutron and Synchrotron X-ray Scattering Study of a MgAl-Layered Double Oxide

Theodosios Famprikis, Jöerg C. Neuefeind, Frederick Z.T. Yang, Chunping Chen, Dermot O’Hare, Claire T. Coulthard, Mohsen Danaie
article en

Abstract

Owing to their vast chemical and structural flexibility, layered double hydroxides (LDHs) are among some of the most promising materials for many catalytic applications. Thermal decomposition below 700 °C leads to the formation of a complex semiamorphous mixed metal oxide (LDO). In this study, the product of calcination of aqueous miscible organic solvent-treated AMO-[Mg<sub>0.70</sub>Al<sub>0.30</sub>(OH)<sub>2</sub>](CO<sub>3</sub>)<sub>0.15</sub>·<i>y</i>H<sub>2</sub>O·<i>z</i>EtOH at 600 °C (AMO-Mg<sub>2.33</sub>Al LDO) has been investigated using a synergistic combination of high-resolution synchrotron X-ray and neutron scattering techniques, as well as high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), solid-state NMR (ssNMR), and thermogravimetric analysis coupled with mass spectrometry (TGA-MS). The local and extended structure of AMO-Mg<sub>2.33</sub>Al LDO has been modeled by reciprocal and real space X-ray and neutron scattering analyses and is consistent with a modified rock salt structure consisting of octahedrally coordinated layers containing a small number of vacancies and the tetrahedrally coordinated Al<sup>3+</sup> sites in contrast to previous reports.

Inorganic ChemistryVol. 64(46)
Oak Ridge National Laboratory (US), Mansfield University (US), Oxford Research Group (GB), Diamond Light Source (GB), University of Oxford (GB), Imaging, Brain, and Neuropsychiatry (FR)
Openalex Percentile: Top 71%
Layered Double Hydroxides Synthesis and Applications
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A Combined Neutron and Synchrotron X-ray Scattering Study of a MgAl-Layered Double Oxide — Theodosios Famprikis, Jöerg C. Neuefeind, et al. · Inorganic Chemistry (2025) | TGRS Research Map | TGRS