Effect of Crystal Structure on the Catalytic Properties of Bi4Zr2xV2−2xO11−δ Perovskites in the Decomposition of Isobutanol
| Autor: | I. I. Mikhalenko, E. I. Knyazeva, A. I. Pylinina |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Zirconium
Materials science Isobutanol chemistry.chemical_element 02 engineering and technology Crystal structure 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound chemistry Physical chemistry Dehydrogenation Physical and Theoretical Chemistry 0210 nano-technology Powder diffraction Perovskite (structure) Solid solution |
| Zdroj: | Russian Journal of Physical Chemistry A. 94:1786-1790 |
| ISSN: | 1531-863X 0036-0244 |
| DOI: | 10.1134/s0036024420090137 |
| Popis: | The effect crystal structure has on the catalytic properties of complex zirconium-containing bismuth vanadates Bi4Zr2xV2–2xO11–δ in the decomposition of isobutanol is studied. Complex oxides are obtained by means of solid-state synthesis and studied via IR spectroscopy, X-ray powder diffraction, and XPS. The catalytic activity of Bi4Zr2xV2−2xO11−δ perovskite in the dehydrogenation of isobutanol grows along with the content of zirconium(ΙV) ions and phase changes α → β → γ, with the highly conductive γ-phase being the one most active. It is found that an increase in the dehydrogenating activity of the samples is associated with a drop in the activation energy of the reaction and a change in the state of the solid solution’s current carriers. |
| Databáze: | OpenAIRE |
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