Influence of CO oxidation conditions on the Mn-Zr oxide catalyst structure: In situ XRD and MS study

O. A. Bulavchenko; Z. S. Vinokurov; T. N. Afonasenko; S. V. Tsybulya

doi:10.1016/j.matlet.2019.126768

Influence of CO oxidation conditions on the Mn-Zr oxide catalyst structure: In situ XRD and MS study

O. A. Bulavchenko, Z. S. Vinokurov, T. N. Afonasenko, S. V. Tsybulya

Результат исследования: Научные публикации в периодических изданиях › статья › рецензирование

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Аннотация

Mn-Zr oxide catalyst was studied by X-ray powder diffraction and mass-spectrometry under CO oxidation reaction conditions with different CO/O₂ ratio. Mn-Zr catalyst consists of manganese oxides and Mn_yZr_1–yO_2–x solid solution and was found to be stable in the environment with stoichiometric ratio of CO/O₂ = 2:1 and with excess of oxygen. When the catalyst is treated in the reducing environment (pure CO and CO/O₂ = 4:1) the transformation of manganese oxides to MnO and reduction of manganese cations in the structure of Mn_yZr_1–yO_2–x are observed. This process is reversible and reoxidation leads to the formation of the catalyst similar to the initial.

Язык оригинала	английский
Номер статьи	126768
Число страниц	4
Журнал	Materials Letters
Том	258
DOI	https://doi.org/10.1016/j.matlet.2019.126768
Состояние	Опубликовано - 1 янв 2020

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title = "Influence of CO oxidation conditions on the Mn-Zr oxide catalyst structure: In situ XRD and MS study",

abstract = "Mn-Zr oxide catalyst was studied by X-ray powder diffraction and mass-spectrometry under CO oxidation reaction conditions with different CO/O2 ratio. Mn-Zr catalyst consists of manganese oxides and MnyZr1–yO2–x solid solution and was found to be stable in the environment with stoichiometric ratio of CO/O2 = 2:1 and with excess of oxygen. When the catalyst is treated in the reducing environment (pure CO and CO/O2 = 4:1) the transformation of manganese oxides to MnO and reduction of manganese cations in the structure of MnyZr1–yO2–x are observed. This process is reversible and reoxidation leads to the formation of the catalyst similar to the initial.",

keywords = "CO oxidation, Crystal structure, In situ XRD, Solid solution, Structural, Zirconia, REDUCTION, TEMPERATURE, BEHAVIOR, MNOX/ZRO2",

author = "Bulavchenko, {O. A.} and Vinokurov, {Z. S.} and Afonasenko, {T. N.} and Tsybulya, {S. V.}",

year = "2020",

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volume = "258",

journal = "Materials Letters",

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Influence of CO oxidation conditions on the Mn-Zr oxide catalyst structure : In situ XRD and MS study. / Bulavchenko, O. A.; Vinokurov, Z. S.; Afonasenko, T. N.; Tsybulya, S. V.

В: Materials Letters, Том 258, 126768, 01.01.2020.

Результат исследования: Научные публикации в периодических изданиях › статья › рецензирование

TY - JOUR

T1 - Influence of CO oxidation conditions on the Mn-Zr oxide catalyst structure

T2 - In situ XRD and MS study

AU - Bulavchenko, O. A.

AU - Vinokurov, Z. S.

AU - Afonasenko, T. N.

AU - Tsybulya, S. V.

PY - 2020/1/1

Y1 - 2020/1/1

N2 - Mn-Zr oxide catalyst was studied by X-ray powder diffraction and mass-spectrometry under CO oxidation reaction conditions with different CO/O2 ratio. Mn-Zr catalyst consists of manganese oxides and MnyZr1–yO2–x solid solution and was found to be stable in the environment with stoichiometric ratio of CO/O2 = 2:1 and with excess of oxygen. When the catalyst is treated in the reducing environment (pure CO and CO/O2 = 4:1) the transformation of manganese oxides to MnO and reduction of manganese cations in the structure of MnyZr1–yO2–x are observed. This process is reversible and reoxidation leads to the formation of the catalyst similar to the initial.

AB - Mn-Zr oxide catalyst was studied by X-ray powder diffraction and mass-spectrometry under CO oxidation reaction conditions with different CO/O2 ratio. Mn-Zr catalyst consists of manganese oxides and MnyZr1–yO2–x solid solution and was found to be stable in the environment with stoichiometric ratio of CO/O2 = 2:1 and with excess of oxygen. When the catalyst is treated in the reducing environment (pure CO and CO/O2 = 4:1) the transformation of manganese oxides to MnO and reduction of manganese cations in the structure of MnyZr1–yO2–x are observed. This process is reversible and reoxidation leads to the formation of the catalyst similar to the initial.

KW - CO oxidation

KW - Crystal structure

KW - In situ XRD

KW - Solid solution

KW - Structural

KW - Zirconia

KW - REDUCTION

KW - TEMPERATURE

KW - BEHAVIOR

KW - MNOX/ZRO2

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DO - 10.1016/j.matlet.2019.126768

M3 - Article

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VL - 258

JO - Materials Letters

JF - Materials Letters

SN - 0167-577X

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