Structure of Oxides Prepared by Decomposition of Layered Double Mg–Al and Ni–Al Hydroxides
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
Journal of Solid State Chemistry
ISSN: 0022-4596
, E-ISSN: 1095-726X
|
| Output data |
Year: 2015,
Volume: 225,
Pages: 417-426
Pages count
: 10
DOI:
10.1016/j.jssc.2015.01.022
|
| Tags |
1D disorder, Defect spinel, DIFFaX simulation, LDH, Mixed oxide, X-ray diffraction |
| Authors |
Cherepanova Svetlana V.
1,2
,
Leontʹeva Natalya N.
3
,
Arbuzov Aleksey B.
3
,
Drozdov Vladimir A.
3
,
Belskaya Olga B.
3,4
,
Antonicheva Nina V.
3
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis Siberian branch of Russian Academy of Sciences, pr. Lavrentieva 5, Novosibirsk 630090, Russia
|
| 2 |
Novosibirsk State University, Novosibirsk, Russia
|
| 3 |
Institute of hydrocarbons processing Siberian branch of Russian Academy of Sciences, Neftezavodskaya, 54, Omsk 644040, Russia
|
| 4 |
Omsk State Technical University, Omsk, Russia
|
|
Funding (1)
|
1
|
Russian Science Foundation
|
14-23-00037
|
Thermal decomposition of Mg–Al and Ni–Al layered double hydroxides LDH at temperatures lower than 800 °C leads to the formation of oxides with different structures. Mg–Al oxide has a very defective structure and consists of octahedral layers as in periclase MgO and mixed octahedral–tetrahedral layers as in spinel MgAl2O4. Mixed Ni–Al oxide has a sandwich-like structure, consisting of a core with Al-doped NiO-like structure and some surface layers with spinel NiAl2O4 structure epitaxial connected with the core. Suggested models were verified by simulation of X-ray diffraction patterns using DIFFaX code, as well as HRTEM, IR-, UV-spectroscopies, and XPS.