Sr, Mg-Substituted Titanates on the Basis of La2TiO5: Effect of Substitution on Catalytic Activity in the Oxidative Methane Coupling Full article
| Journal |
Materials Today Chemistry
ISSN: 2468-5194 |
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| Output data | Year: 2022, Volume: 26, Article number : 101124, Pages count : 10 DOI: 10.1016/j.mtchem.2022.101124 | ||
| Tags | Layered perovskites; Strontium doping; Magnesium doping; Oxidative coupling of methane | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0004 |
Abstract:
Based on La2TiO5 layered perovskite, the complex oxide materials Sr2αLa2-2αTiO5-δ and Mg2αLa2-2αTiO5-δ (α = 0–1) were synthesized by sol-precipitation method. The X-ray diffraction analysis, the specific surface area, and scanning electron microscopy techniques showed that Sr-substituted samples contain phases of the ‘layered’ perovskite (SrLa)2TiO5-δ as well as La2O3, La(OH)3 and TiO2. The Mg-substituted samples contain the phases of the ‘double’ perovskites (Mg,La)TiO3-δ, and La(OH)3. The specific surface area of as prepared samples varied within 0.5–4.2 m2/g. The catalytic properties of the materials were investigated by the reaction the oxidative coupling of methane to ethane in a fixed-bed microcatalytic reactor at temperatures from 600 to 950 °C. Most active in the OCM reaction were the samples in which the substitution degree of lanthanum α was equal to 0.1–0.3. Sr-substituted samples showed higher activity than Mg-substituted ones. The best activity was revealed for Sr2αLa2-2αTiO5-δ (α = 0.1).
Cite:
Ivanova Y.
, Petrov R.
, Reshetnikov S.
, Isupova L.
Sr, Mg-Substituted Titanates on the Basis of La2TiO5: Effect of Substitution on Catalytic Activity in the Oxidative Methane Coupling
Materials Today Chemistry. 2022. V.26. 101124 :1-10. DOI: 10.1016/j.mtchem.2022.101124 WOS Scopus РИНЦ AN OpenAlex
Sr, Mg-Substituted Titanates on the Basis of La2TiO5: Effect of Substitution on Catalytic Activity in the Oxidative Methane Coupling
Materials Today Chemistry. 2022. V.26. 101124 :1-10. DOI: 10.1016/j.mtchem.2022.101124 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | May 16, 2022 |
| Accepted: | Aug 1, 2022 |
| Published online: | Sep 5, 2022 |
| Published print: | Dec 1, 2022 |
Identifiers:
| Web of science: | WOS:000876817200002 |
| Scopus: | 2-s2.0-85137084542 |
| Elibrary: | 50384191 |
| Chemical Abstracts: | 2022:2448163 |
| OpenAlex: | W4294611901 |