Silver-manganese mixed oxide with crednerite structure as a catalyst for low-temperature catalytic CO oxidation

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Silver-manganese mixed oxide with crednerite structure as a catalyst for low-temperature catalytic CO oxidation. / Svintsitskiy, D. A.; Metalnikova, V. M.; Cherepanova, S. V. et al.

In: Applied Catalysis A: General, Vol. 661, 119244, 05.07.2023.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{4066267ff1934226a995086ba29ee8fe,

title = "Silver-manganese mixed oxide with crednerite structure as a catalyst for low-temperature catalytic CO oxidation",

abstract = "The paper describes the conditions for the preparation of AgMnO2 particles with the crednerite structure without impurity crystallized phases. It was shown that catalytic properties of AgMnO2 in CO oxidation might be different in dependence on the nature of the alkali-containing precursor used. The highest catalytic activity was achieved when using a combination of K- and Na-containing precursors. It has been found that the low-temperature catalytic activity of AgMnO2 increases noticeably with a decrease in the relative silver amount. An in situ X-ray diffraction study revealed a partial release of silver from crednerite structure with the formation of Ag0 particles when AgMnO2 was heated in a CO+O2 mixture to 150–200 °C, whereas heating to 250 °C followed by cooling to room temperature led to the incorporation of silver back into crednerite structure. The low-temperature catalytic activity of AgMnO2 correlates with the amount of weakly bounded oxygen species on the surface.",

keywords = "Catalytic oxidation, Crednerite, In situ diffraction, Low-temperature activity, Manganese, Silver",

author = "Svintsitskiy, {D. A.} and Metalnikova, {V. M.} and Cherepanova, {S. V.} and Boronin, {A. I.}",

note = "The work was supported by the Russian Science Foundation (grant No. 21–73-00183 dated 07/28/2021). The XRD experiments were carried out using the facilities of the collective use center “ National Center for Studying Catalysts ”. The authors are grateful to E. M. Slavinskaya for performing catalytic experiment in presence of water vapor.",

year = "2023",

month = jul,

day = "5",

doi = "10.1016/j.apcata.2023.119244",

language = "English",

volume = "661",

journal = "Applied Catalysis A: General",

issn = "0926-860X",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Silver-manganese mixed oxide with crednerite structure as a catalyst for low-temperature catalytic CO oxidation

AU - Svintsitskiy, D. A.

AU - Metalnikova, V. M.

AU - Cherepanova, S. V.

AU - Boronin, A. I.

N1 - The work was supported by the Russian Science Foundation (grant No. 21–73-00183 dated 07/28/2021). The XRD experiments were carried out using the facilities of the collective use center “ National Center for Studying Catalysts ”. The authors are grateful to E. M. Slavinskaya for performing catalytic experiment in presence of water vapor.

PY - 2023/7/5

Y1 - 2023/7/5

N2 - The paper describes the conditions for the preparation of AgMnO2 particles with the crednerite structure without impurity crystallized phases. It was shown that catalytic properties of AgMnO2 in CO oxidation might be different in dependence on the nature of the alkali-containing precursor used. The highest catalytic activity was achieved when using a combination of K- and Na-containing precursors. It has been found that the low-temperature catalytic activity of AgMnO2 increases noticeably with a decrease in the relative silver amount. An in situ X-ray diffraction study revealed a partial release of silver from crednerite structure with the formation of Ag0 particles when AgMnO2 was heated in a CO+O2 mixture to 150–200 °C, whereas heating to 250 °C followed by cooling to room temperature led to the incorporation of silver back into crednerite structure. The low-temperature catalytic activity of AgMnO2 correlates with the amount of weakly bounded oxygen species on the surface.

AB - The paper describes the conditions for the preparation of AgMnO2 particles with the crednerite structure without impurity crystallized phases. It was shown that catalytic properties of AgMnO2 in CO oxidation might be different in dependence on the nature of the alkali-containing precursor used. The highest catalytic activity was achieved when using a combination of K- and Na-containing precursors. It has been found that the low-temperature catalytic activity of AgMnO2 increases noticeably with a decrease in the relative silver amount. An in situ X-ray diffraction study revealed a partial release of silver from crednerite structure with the formation of Ag0 particles when AgMnO2 was heated in a CO+O2 mixture to 150–200 °C, whereas heating to 250 °C followed by cooling to room temperature led to the incorporation of silver back into crednerite structure. The low-temperature catalytic activity of AgMnO2 correlates with the amount of weakly bounded oxygen species on the surface.

KW - Catalytic oxidation

KW - Crednerite

KW - In situ diffraction

KW - Low-temperature activity

KW - Manganese

KW - Silver

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85156188861&origin=inward&txGid=22ae370f2b9e22c73afb751c4bedf0f2

UR - https://www.mendeley.com/catalogue/459fe5d1-5089-38a0-ab29-b4d5a0656216/

U2 - 10.1016/j.apcata.2023.119244

DO - 10.1016/j.apcata.2023.119244

M3 - Article

VL - 661

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

SN - 0926-860X

M1 - 119244

ER -

ID: 59262802