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Effect of Potassium Promoter on the Performance of Nickel-Based Catalysts Supported on MnOx in Steam Reforming of Ethanol. Catalysts 2022. [DOI: 10.3390/catal12060600] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The effect of a potassium promoter on the stability of and resistance to a carbon deposit formation on the Ni/MnOx catalyst under SRE conditions was studied at 420 °C for different H2O/EtOH molar ratios in the range from 4/1 to 12/1. The catalysts were prepared by the impregnation method and characterized using several techniques to study their textural, structural, and redox properties before being tested in a SRE reaction. The catalytic tests indicated that the addition of a low amount of potassium (1.6 wt.%) allows a catalyst with high stability to be obtained, which was ascribed to high resistance to carbon formation. The restriction of the amount of carbon deposits originates from the potassium presence on the Ni surface, which leads to (i) a decrease in the number of active sites available for methane decomposition and (ii) an increase in the rate of the steam gasification of carbon formed during SRE reactions.
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Nasr S, Hayes RE, Semagina N. Stability of kinetic parameters of
Co
3
O
4
/
CeO
2
catalyzed methane combustion. CAN J CHEM ENG 2021. [DOI: 10.1002/cjce.24054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Somaye Nasr
- Department of Chemical and Materials Engineering University of Alberta Edmonton Alberta Canada
| | - Robert E. Hayes
- Department of Chemical and Materials Engineering University of Alberta Edmonton Alberta Canada
| | - Natalia Semagina
- Department of Chemical and Materials Engineering University of Alberta Edmonton Alberta Canada
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Greluk M, Gac W, Rotko M, Słowik G, Turczyniak-Surdacka S. Co/CeO2 and Ni/CeO2 catalysts for ethanol steam reforming: Effect of the cobalt/nickel dispersion on catalysts properties. J Catal 2021. [DOI: 10.1016/j.jcat.2020.11.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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The Catalytic Hydrogenation of Maleic Anhydride on CeO2−δ-Supported Transition Metal Catalysts. Catalysts 2017. [DOI: 10.3390/catal7090272] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Jha A, Lee YL, Jang WJ, Shim JO, Jeon KW, Na HS, Kim HM, Roh HS, Jeong DW, Jeon SG, Na JG, Yoon WL. Effect of the redox properties of support oxide over cobalt-based catalysts in high temperature water-gas shift reaction. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2016.12.028] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Turczyniak S, Greluk M, Słowik G, Gac W, Zafeiratos S, Machocki A. Surface State and Catalytic Performance of Ceria-Supported Cobalt Catalysts in the Steam Reforming of Ethanol. ChemCatChem 2017. [DOI: 10.1002/cctc.201601343] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sylwia Turczyniak
- Faculty of Chemistry; Maria Curie-Sklodowska University in Lublin; 3 Maria Curie-Skłodowska Square 20-031 Lublin Poland
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES), ECPM, UMR 7515 CNRS-; Université de Strasbourg; 25, rue Becquerel 67087 Strasbourg Cedex 02 France
| | - Magdalena Greluk
- Faculty of Chemistry; Maria Curie-Sklodowska University in Lublin; 3 Maria Curie-Skłodowska Square 20-031 Lublin Poland
| | - Grzegorz Słowik
- Faculty of Chemistry; Maria Curie-Sklodowska University in Lublin; 3 Maria Curie-Skłodowska Square 20-031 Lublin Poland
| | - Wojciech Gac
- Faculty of Chemistry; Maria Curie-Sklodowska University in Lublin; 3 Maria Curie-Skłodowska Square 20-031 Lublin Poland
| | - Spyridon Zafeiratos
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES), ECPM, UMR 7515 CNRS-; Université de Strasbourg; 25, rue Becquerel 67087 Strasbourg Cedex 02 France
| | - Andrzej Machocki
- Faculty of Chemistry; Maria Curie-Sklodowska University in Lublin; 3 Maria Curie-Skłodowska Square 20-031 Lublin Poland
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