Chemical and texture promoters in Cu-Fe-Al oxide nanocomposite catalysts for combustion of solid fuel gasification products

O. A. Bulavchenko; A. A. Pochtar; E. Yu Gerasimov; A. V. Fedorov; Yu A. Chesalov; A. A. Saraev; V. A. Yakovlev; V. V. Kaichev

doi:10.1016/j.apcata.2019.117364

Chemical and texture promoters in Cu-Fe-Al oxide nanocomposite catalysts for combustion of solid fuel gasification products

O. A. Bulavchenko, A. A. Pochtar, E. Yu Gerasimov, A. V. Fedorov, Yu A. Chesalov, A. A. Saraev, V. A. Yakovlev, V. V. Kaichev

Результат исследования: Научные публикации в периодических изданиях › статья

Выдержка

The Fe-Al and Cu-Fe-Al oxide nanocomposites active in the oxidation of CO were studied by XRD, TEM, EDX, Raman spectroscopy, TPR-H₂ and differential dissolution techniques. The nanocomposites were prepared by fusion of aluminum, iron, and copper salts that leads to their inhomogeneity. The Al³⁺ cations partially dissolve in the Fe₂O₃ lattice, which leads to a significant decrease in size of iron oxide. Copper locates in the Al-rich agglomerates to form CuO nanoparticles and partially dissolves in alumina. The dissolution of copper in iron oxide and formation of a (Cu,Al,Fe)₃O₄ spinel was observed only at a high Cu loading. Hence, aluminum plays the role of a textural promoter, preventing sintering and stabilization of the high specific surface area of oxide. Copper does not act as a textural promoter, as it does not affect the crystal size of iron oxide. The addition of Cu increases the catalytic activity of iron oxide-based catalysts.

Язык оригинала	английский
Номер статьи	117364
Журнал	Applied Catalysis A: General
Том	590
DOI	https://doi.org/10.1016/j.apcata.2019.117364
Состояние	Опубликовано - 25 янв 2020

Отпечаток

Iron oxides

Gasification

Oxides

Copper

Nanocomposites

Textures

Catalysts

Aluminum

Dissolution

Aluminum Oxide

Carbon Monoxide

Specific surface area

Raman spectroscopy

Cations

Energy dispersive spectroscopy

Catalyst activity

Alumina

Fusion reactions

Sintering

Iron

Цитировать

Bulavchenko, O. A., Pochtar, A. A., Gerasimov, E. Y., Fedorov, A. V., Chesalov, Y. A., Saraev, A. A., ... Kaichev, V. V. (2020). Chemical and texture promoters in Cu-Fe-Al oxide nanocomposite catalysts for combustion of solid fuel gasification products. Applied Catalysis A: General, 590, [117364]. https://doi.org/10.1016/j.apcata.2019.117364

Bulavchenko, O. A. ; Pochtar, A. A. ; Gerasimov, E. Yu ; Fedorov, A. V. ; Chesalov, Yu A. ; Saraev, A. A. ; Yakovlev, V. A. ; Kaichev, V. V. / Chemical and texture promoters in Cu-Fe-Al oxide nanocomposite catalysts for combustion of solid fuel gasification products. В: Applied Catalysis A: General. 2020 ; Том 590.

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title = "Chemical and texture promoters in Cu-Fe-Al oxide nanocomposite catalysts for combustion of solid fuel gasification products",

abstract = "The Fe-Al and Cu-Fe-Al oxide nanocomposites active in the oxidation of CO were studied by XRD, TEM, EDX, Raman spectroscopy, TPR-H2 and differential dissolution techniques. The nanocomposites were prepared by fusion of aluminum, iron, and copper salts that leads to their inhomogeneity. The Al3+ cations partially dissolve in the Fe2O3 lattice, which leads to a significant decrease in size of iron oxide. Copper locates in the Al-rich agglomerates to form CuO nanoparticles and partially dissolves in alumina. The dissolution of copper in iron oxide and formation of a (Cu,Al,Fe)3O4 spinel was observed only at a high Cu loading. Hence, aluminum plays the role of a textural promoter, preventing sintering and stabilization of the high specific surface area of oxide. Copper does not act as a textural promoter, as it does not affect the crystal size of iron oxide. The addition of Cu increases the catalytic activity of iron oxide-based catalysts.",

keywords = "CO oxidation, Copper oxide, Heterogeneous catalysis, Iron oxide, Solid solution",

author = "Bulavchenko, {O. A.} and Pochtar, {A. A.} and Gerasimov, {E. Yu} and Fedorov, {A. V.} and Chesalov, {Yu A.} and Saraev, {A. A.} and Yakovlev, {V. A.} and Kaichev, {V. V.}",

year = "2020",

month = "1",

day = "25",

doi = "10.1016/j.apcata.2019.117364",

language = "English",

volume = "590",

journal = "Applied Catalysis A: General",

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Bulavchenko, OA , Pochtar, AA , Gerasimov, EY, Fedorov, AV, Chesalov, YA , Saraev, AA , Yakovlev, VA & Kaichev, VV 2020, 'Chemical and texture promoters in Cu-Fe-Al oxide nanocomposite catalysts for combustion of solid fuel gasification products', Applied Catalysis A: General, том. 590, 117364. https://doi.org/10.1016/j.apcata.2019.117364

Chemical and texture promoters in Cu-Fe-Al oxide nanocomposite catalysts for combustion of solid fuel gasification products. / Bulavchenko, O. A.; Pochtar, A. A.; Gerasimov, E. Yu; Fedorov, A. V.; Chesalov, Yu A.; Saraev, A. A.; Yakovlev, V. A.; Kaichev, V. V.

В: Applied Catalysis A: General, Том 590, 117364, 25.01.2020.

Результат исследования: Научные публикации в периодических изданиях › статья

TY - JOUR

T1 - Chemical and texture promoters in Cu-Fe-Al oxide nanocomposite catalysts for combustion of solid fuel gasification products

AU - Bulavchenko, O. A.

AU - Pochtar, A. A.

AU - Gerasimov, E. Yu

AU - Fedorov, A. V.

AU - Chesalov, Yu A.

AU - Saraev, A. A.

AU - Yakovlev, V. A.

AU - Kaichev, V. V.

PY - 2020/1/25

Y1 - 2020/1/25

N2 - The Fe-Al and Cu-Fe-Al oxide nanocomposites active in the oxidation of CO were studied by XRD, TEM, EDX, Raman spectroscopy, TPR-H2 and differential dissolution techniques. The nanocomposites were prepared by fusion of aluminum, iron, and copper salts that leads to their inhomogeneity. The Al3+ cations partially dissolve in the Fe2O3 lattice, which leads to a significant decrease in size of iron oxide. Copper locates in the Al-rich agglomerates to form CuO nanoparticles and partially dissolves in alumina. The dissolution of copper in iron oxide and formation of a (Cu,Al,Fe)3O4 spinel was observed only at a high Cu loading. Hence, aluminum plays the role of a textural promoter, preventing sintering and stabilization of the high specific surface area of oxide. Copper does not act as a textural promoter, as it does not affect the crystal size of iron oxide. The addition of Cu increases the catalytic activity of iron oxide-based catalysts.

AB - The Fe-Al and Cu-Fe-Al oxide nanocomposites active in the oxidation of CO were studied by XRD, TEM, EDX, Raman spectroscopy, TPR-H2 and differential dissolution techniques. The nanocomposites were prepared by fusion of aluminum, iron, and copper salts that leads to their inhomogeneity. The Al3+ cations partially dissolve in the Fe2O3 lattice, which leads to a significant decrease in size of iron oxide. Copper locates in the Al-rich agglomerates to form CuO nanoparticles and partially dissolves in alumina. The dissolution of copper in iron oxide and formation of a (Cu,Al,Fe)3O4 spinel was observed only at a high Cu loading. Hence, aluminum plays the role of a textural promoter, preventing sintering and stabilization of the high specific surface area of oxide. Copper does not act as a textural promoter, as it does not affect the crystal size of iron oxide. The addition of Cu increases the catalytic activity of iron oxide-based catalysts.

KW - CO oxidation

KW - Copper oxide

KW - Heterogeneous catalysis

KW - Iron oxide

KW - Solid solution

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U2 - 10.1016/j.apcata.2019.117364

DO - 10.1016/j.apcata.2019.117364

M3 - Article

AN - SCOPUS:85075797492

VL - 590

JO - Applied Catalysis A: General