Effect of Potassium Promoter on the Performance of Nickel-Based Catalysts Supported on MnO<sub>x</sub> in Steam Reforming of Ethanol
The effect of a potassium promoter on the stability of and resistance to a carbon deposit formation on the Ni/MnO<sub>x</sub> catalyst under SRE conditions was studied at 420 °C for different H<sub>2</sub>O/EtOH molar ratios in the range from 4/1 to 12/1. The catalysts were p...
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MDPI AG
2022-05-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/12/6/600 |
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| author | Magdalena Greluk Marek Rotko Grzegorz Słowik Sylwia Turczyniak-Surdacka Gabriela Grzybek Kinga Góra-Marek Andrzej Kotarba |
| author_facet | Magdalena Greluk Marek Rotko Grzegorz Słowik Sylwia Turczyniak-Surdacka Gabriela Grzybek Kinga Góra-Marek Andrzej Kotarba |
| author_sort | Magdalena Greluk |
| collection | DOAJ |
| description | The effect of a potassium promoter on the stability of and resistance to a carbon deposit formation on the Ni/MnO<sub>x</sub> catalyst under SRE conditions was studied at 420 °C for different H<sub>2</sub>O/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. |
| first_indexed | 2024-03-10T00:11:03Z |
| format | Article |
| id | doaj.art-53018003e4ce4815916cef624d14abc1 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T00:11:03Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-53018003e4ce4815916cef624d14abc12023-11-23T15:59:07ZengMDPI AGCatalysts2073-43442022-05-0112660010.3390/catal12060600Effect of Potassium Promoter on the Performance of Nickel-Based Catalysts Supported on MnO<sub>x</sub> in Steam Reforming of EthanolMagdalena Greluk0Marek Rotko1Grzegorz Słowik2Sylwia Turczyniak-Surdacka3Gabriela Grzybek4Kinga Góra-Marek5Andrzej Kotarba6Department of Chemical Technology, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, Maria Curie-Sklodowska Sq. 3, 20-031 Lublin, PolandDepartment of Chemical Technology, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, Maria Curie-Sklodowska Sq. 3, 20-031 Lublin, PolandDepartment of Chemical Technology, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, Maria Curie-Sklodowska Sq. 3, 20-031 Lublin, PolandBiological and Chemical Research Centre, University of Warsaw, 101 Żwirki i Wigury Street, 20-089 Warsaw, PolandFaculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, PolandFaculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, PolandFaculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, PolandThe effect of a potassium promoter on the stability of and resistance to a carbon deposit formation on the Ni/MnO<sub>x</sub> catalyst under SRE conditions was studied at 420 °C for different H<sub>2</sub>O/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.https://www.mdpi.com/2073-4344/12/6/600hydrogen productionethanol steam reformingnickel-based catalystmanganese oxidespotassium promoter |
| spellingShingle | Magdalena Greluk Marek Rotko Grzegorz Słowik Sylwia Turczyniak-Surdacka Gabriela Grzybek Kinga Góra-Marek Andrzej Kotarba Effect of Potassium Promoter on the Performance of Nickel-Based Catalysts Supported on MnO<sub>x</sub> in Steam Reforming of Ethanol Catalysts hydrogen production ethanol steam reforming nickel-based catalyst manganese oxides potassium promoter |
| title | Effect of Potassium Promoter on the Performance of Nickel-Based Catalysts Supported on MnO<sub>x</sub> in Steam Reforming of Ethanol |
| title_full | Effect of Potassium Promoter on the Performance of Nickel-Based Catalysts Supported on MnO<sub>x</sub> in Steam Reforming of Ethanol |
| title_fullStr | Effect of Potassium Promoter on the Performance of Nickel-Based Catalysts Supported on MnO<sub>x</sub> in Steam Reforming of Ethanol |
| title_full_unstemmed | Effect of Potassium Promoter on the Performance of Nickel-Based Catalysts Supported on MnO<sub>x</sub> in Steam Reforming of Ethanol |
| title_short | Effect of Potassium Promoter on the Performance of Nickel-Based Catalysts Supported on MnO<sub>x</sub> in Steam Reforming of Ethanol |
| title_sort | effect of potassium promoter on the performance of nickel based catalysts supported on mno sub x sub in steam reforming of ethanol |
| topic | hydrogen production ethanol steam reforming nickel-based catalyst manganese oxides potassium promoter |
| url | https://www.mdpi.com/2073-4344/12/6/600 |
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