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 оригиналаанглийский
Номер статьи117364
ЖурналApplied Catalysis A: General
Том590
DOI
СостояниеОпубликовано - 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

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@article{540649e9e958406784731e34eeaa6dcb,
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",
issn = "0926-860X",
publisher = "Elsevier",

}

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 изданияхстатья

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

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VL - 590

JO - Applied Catalysis A: General

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