The Formation of Mn-Ce Oxide Catalysts for CO Oxidation by Oxalate Route: The Role of Manganese Content
The Mn-Ce oxide catalysts active in the oxidation of CO were studied by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction (TPR), transition electron microscopy (TEM), energy dispersive X-Ray (EDX), and a differential dissolution technique. The Mn-Ce ca...
Main Authors: | , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2021-04-01
|
Series: | Nanomaterials |
Subjects: | |
Online Access: | https://www.mdpi.com/2079-4991/11/4/988 |
id |
doaj-3bbb2ce384f9424f966539a9ed911e2f |
---|---|
record_format |
Article |
spelling |
doaj-3bbb2ce384f9424f966539a9ed911e2f2021-04-12T23:01:16ZengMDPI AGNanomaterials2079-49912021-04-011198898810.3390/nano11040988The Formation of Mn-Ce Oxide Catalysts for CO Oxidation by Oxalate Route: The Role of Manganese ContentOlga A. Bulavchenko0Tatyana N. Afonasenko1Alexey R. Osipov2Alena A. Pochtar’3Andrey A. Saraev4Zahar S. Vinokurov5Evgeny Yu. Gerasimov6Sergey V. Tsybulya7Boreskov Institute of Catalysis SB RAS, Lavrentiev Ave. 5, 630090 Novosibirsk, RussiaCenter of New Chemical Technologies BIC, Boreskov Institute of Catalysis, Neftezavodskaya 54, 644040 Omsk, RussiaCenter of New Chemical Technologies BIC, Boreskov Institute of Catalysis, Neftezavodskaya 54, 644040 Omsk, RussiaBoreskov Institute of Catalysis SB RAS, Lavrentiev Ave. 5, 630090 Novosibirsk, RussiaBoreskov Institute of Catalysis SB RAS, Lavrentiev Ave. 5, 630090 Novosibirsk, RussiaBoreskov Institute of Catalysis SB RAS, Lavrentiev Ave. 5, 630090 Novosibirsk, RussiaBoreskov Institute of Catalysis SB RAS, Lavrentiev Ave. 5, 630090 Novosibirsk, RussiaBoreskov Institute of Catalysis SB RAS, Lavrentiev Ave. 5, 630090 Novosibirsk, RussiaThe Mn-Ce oxide catalysts active in the oxidation of CO were studied by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction (TPR), transition electron microscopy (TEM), energy dispersive X-Ray (EDX), and a differential dissolution technique. The Mn-Ce catalysts were prepared by thermal decomposition of oxalates by varying the Mn:Ce ratio. The nanocrystalline oxides with a fluorite structure and particle sizes of 4–6 nm were formed. The introduction of manganese led to a reduction of the oxide particle size, a decrease in the surface area, and the formation of a Mn<sub>y</sub>Ce<sub>1−y</sub>O<sub>2−δ</sub> solid solution. An increase in the manganese content resulted in the formation of manganese oxides such as Mn<sub>2</sub>O<sub>3</sub>, Mn<sub>3</sub>O<sub>4</sub>, and Mn<sub>5</sub>O<sub>8</sub>. The catalytic activity as a function of the manganese content had a volcano-like shape. The best catalytic performance was exhibited by the catalyst containing ca. 50 at.% Mn due to the high specific surface area, the formation of the solid solution, and the maximum content of the solid solution.https://www.mdpi.com/2079-4991/11/4/988manganese oxideceriasolid solutionnanostructureCO oxidation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Olga A. Bulavchenko Tatyana N. Afonasenko Alexey R. Osipov Alena A. Pochtar’ Andrey A. Saraev Zahar S. Vinokurov Evgeny Yu. Gerasimov Sergey V. Tsybulya |
spellingShingle |
Olga A. Bulavchenko Tatyana N. Afonasenko Alexey R. Osipov Alena A. Pochtar’ Andrey A. Saraev Zahar S. Vinokurov Evgeny Yu. Gerasimov Sergey V. Tsybulya The Formation of Mn-Ce Oxide Catalysts for CO Oxidation by Oxalate Route: The Role of Manganese Content Nanomaterials manganese oxide ceria solid solution nanostructure CO oxidation |
author_facet |
Olga A. Bulavchenko Tatyana N. Afonasenko Alexey R. Osipov Alena A. Pochtar’ Andrey A. Saraev Zahar S. Vinokurov Evgeny Yu. Gerasimov Sergey V. Tsybulya |
author_sort |
Olga A. Bulavchenko |
title |
The Formation of Mn-Ce Oxide Catalysts for CO Oxidation by Oxalate Route: The Role of Manganese Content |
title_short |
The Formation of Mn-Ce Oxide Catalysts for CO Oxidation by Oxalate Route: The Role of Manganese Content |
title_full |
The Formation of Mn-Ce Oxide Catalysts for CO Oxidation by Oxalate Route: The Role of Manganese Content |
title_fullStr |
The Formation of Mn-Ce Oxide Catalysts for CO Oxidation by Oxalate Route: The Role of Manganese Content |
title_full_unstemmed |
The Formation of Mn-Ce Oxide Catalysts for CO Oxidation by Oxalate Route: The Role of Manganese Content |
title_sort |
formation of mn-ce oxide catalysts for co oxidation by oxalate route: the role of manganese content |
publisher |
MDPI AG |
series |
Nanomaterials |
issn |
2079-4991 |
publishDate |
2021-04-01 |
description |
The Mn-Ce oxide catalysts active in the oxidation of CO were studied by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction (TPR), transition electron microscopy (TEM), energy dispersive X-Ray (EDX), and a differential dissolution technique. The Mn-Ce catalysts were prepared by thermal decomposition of oxalates by varying the Mn:Ce ratio. The nanocrystalline oxides with a fluorite structure and particle sizes of 4–6 nm were formed. The introduction of manganese led to a reduction of the oxide particle size, a decrease in the surface area, and the formation of a Mn<sub>y</sub>Ce<sub>1−y</sub>O<sub>2−δ</sub> solid solution. An increase in the manganese content resulted in the formation of manganese oxides such as Mn<sub>2</sub>O<sub>3</sub>, Mn<sub>3</sub>O<sub>4</sub>, and Mn<sub>5</sub>O<sub>8</sub>. The catalytic activity as a function of the manganese content had a volcano-like shape. The best catalytic performance was exhibited by the catalyst containing ca. 50 at.% Mn due to the high specific surface area, the formation of the solid solution, and the maximum content of the solid solution. |
topic |
manganese oxide ceria solid solution nanostructure CO oxidation |
url |
https://www.mdpi.com/2079-4991/11/4/988 |
work_keys_str_mv |
AT olgaabulavchenko theformationofmnceoxidecatalystsforcooxidationbyoxalateroutetheroleofmanganesecontent AT tatyananafonasenko theformationofmnceoxidecatalystsforcooxidationbyoxalateroutetheroleofmanganesecontent AT alexeyrosipov theformationofmnceoxidecatalystsforcooxidationbyoxalateroutetheroleofmanganesecontent AT alenaapochtar theformationofmnceoxidecatalystsforcooxidationbyoxalateroutetheroleofmanganesecontent AT andreyasaraev theformationofmnceoxidecatalystsforcooxidationbyoxalateroutetheroleofmanganesecontent AT zaharsvinokurov theformationofmnceoxidecatalystsforcooxidationbyoxalateroutetheroleofmanganesecontent AT evgenyyugerasimov theformationofmnceoxidecatalystsforcooxidationbyoxalateroutetheroleofmanganesecontent AT sergeyvtsybulya theformationofmnceoxidecatalystsforcooxidationbyoxalateroutetheroleofmanganesecontent AT olgaabulavchenko formationofmnceoxidecatalystsforcooxidationbyoxalateroutetheroleofmanganesecontent AT tatyananafonasenko formationofmnceoxidecatalystsforcooxidationbyoxalateroutetheroleofmanganesecontent AT alexeyrosipov formationofmnceoxidecatalystsforcooxidationbyoxalateroutetheroleofmanganesecontent AT alenaapochtar formationofmnceoxidecatalystsforcooxidationbyoxalateroutetheroleofmanganesecontent AT andreyasaraev formationofmnceoxidecatalystsforcooxidationbyoxalateroutetheroleofmanganesecontent AT zaharsvinokurov formationofmnceoxidecatalystsforcooxidationbyoxalateroutetheroleofmanganesecontent AT evgenyyugerasimov formationofmnceoxidecatalystsforcooxidationbyoxalateroutetheroleofmanganesecontent AT sergeyvtsybulya formationofmnceoxidecatalystsforcooxidationbyoxalateroutetheroleofmanganesecontent |
_version_ |
1721529573623988224 |