Influence of Nickel Loading on Reduced Graphene Oxide-Based Nickel Catalysts for the Hydrogenation of Carbon Dioxide to Methane
In this study, a series of novel nickel catalysts supported on reduced graphene oxide nanosheets (Ni/rGO) with Ni loadings of 10, 15 and 20 wt% were successfully synthesized via the incipient wetness impregnation method. The physicochemical properties of the catalysts and rGO support were thoroughly...
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MDPI AG
2020-04-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/10/5/471 |
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| author | Nur Diyan Mohd Ridzuan Maizatul Shima Shaharun Kah Mun Lee Israf Ud Din Poppy Puspitasari |
| author_facet | Nur Diyan Mohd Ridzuan Maizatul Shima Shaharun Kah Mun Lee Israf Ud Din Poppy Puspitasari |
| author_sort | Nur Diyan Mohd Ridzuan |
| collection | DOAJ |
| description | In this study, a series of novel nickel catalysts supported on reduced graphene oxide nanosheets (Ni/rGO) with Ni loadings of 10, 15 and 20 wt% were successfully synthesized via the incipient wetness impregnation method. The physicochemical properties of the catalysts and rGO support were thoroughly characterized by thermogravimetric analyser, X-ray diffraction, fourier-transform infrared spectroscopy, Raman spectroscopy, N<sub>2</sub> adsorption-desorption, temperature programmed reduction, temperature programmed CO<sub>2</sub> desorption and field emission scanning electron microscopy with energy dispersive X-ray spectroscopy. The properties of the catalysts are correlated to its catalytic activity for CO<sub>2</sub> methanation which were investigated using three-phase slurry reactor at low temperature and pressure of 240 °C and 10 bar, respectively. Among the three catalysts of different Ni loading, Ni<sub>15</sub>/rGO shows the highest activity of 51% conversion of CO<sub>2</sub> with total selectivity towards CH<sub>4</sub>. N<sub>2</sub>-physisorption and CO<sub>2</sub>-TPD analysis suggest that high catalytic performance of Ni<sub>15</sub>/rGO is attributed to the high surface area, strong basic sites and special support effect of rGO in anchoring the active metal. |
| first_indexed | 2024-03-10T20:13:32Z |
| format | Article |
| id | doaj.art-29acec228d1e4acdb58d9ddafb38e9ec |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T20:13:32Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-29acec228d1e4acdb58d9ddafb38e9ec2023-11-19T22:43:52ZengMDPI AGCatalysts2073-43442020-04-0110547110.3390/catal10050471Influence of Nickel Loading on Reduced Graphene Oxide-Based Nickel Catalysts for the Hydrogenation of Carbon Dioxide to MethaneNur Diyan Mohd Ridzuan0Maizatul Shima Shaharun1Kah Mun Lee2Israf Ud Din3Poppy Puspitasari4Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, MalaysiaFundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, MalaysiaFundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, MalaysiaDepartment of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University, 16278 Al-kharj, Saudi ArabiaMechanical Engineering Department, Engineering Faculty, State University of Malang, 5 Semarang Str., 65145 Malang, East Java, IndonesiaIn this study, a series of novel nickel catalysts supported on reduced graphene oxide nanosheets (Ni/rGO) with Ni loadings of 10, 15 and 20 wt% were successfully synthesized via the incipient wetness impregnation method. The physicochemical properties of the catalysts and rGO support were thoroughly characterized by thermogravimetric analyser, X-ray diffraction, fourier-transform infrared spectroscopy, Raman spectroscopy, N<sub>2</sub> adsorption-desorption, temperature programmed reduction, temperature programmed CO<sub>2</sub> desorption and field emission scanning electron microscopy with energy dispersive X-ray spectroscopy. The properties of the catalysts are correlated to its catalytic activity for CO<sub>2</sub> methanation which were investigated using three-phase slurry reactor at low temperature and pressure of 240 °C and 10 bar, respectively. Among the three catalysts of different Ni loading, Ni<sub>15</sub>/rGO shows the highest activity of 51% conversion of CO<sub>2</sub> with total selectivity towards CH<sub>4</sub>. N<sub>2</sub>-physisorption and CO<sub>2</sub>-TPD analysis suggest that high catalytic performance of Ni<sub>15</sub>/rGO is attributed to the high surface area, strong basic sites and special support effect of rGO in anchoring the active metal.https://www.mdpi.com/2073-4344/10/5/471methanationcarbon dioxidenickel-based catalystgraphene support |
| spellingShingle | Nur Diyan Mohd Ridzuan Maizatul Shima Shaharun Kah Mun Lee Israf Ud Din Poppy Puspitasari Influence of Nickel Loading on Reduced Graphene Oxide-Based Nickel Catalysts for the Hydrogenation of Carbon Dioxide to Methane Catalysts methanation carbon dioxide nickel-based catalyst graphene support |
| title | Influence of Nickel Loading on Reduced Graphene Oxide-Based Nickel Catalysts for the Hydrogenation of Carbon Dioxide to Methane |
| title_full | Influence of Nickel Loading on Reduced Graphene Oxide-Based Nickel Catalysts for the Hydrogenation of Carbon Dioxide to Methane |
| title_fullStr | Influence of Nickel Loading on Reduced Graphene Oxide-Based Nickel Catalysts for the Hydrogenation of Carbon Dioxide to Methane |
| title_full_unstemmed | Influence of Nickel Loading on Reduced Graphene Oxide-Based Nickel Catalysts for the Hydrogenation of Carbon Dioxide to Methane |
| title_short | Influence of Nickel Loading on Reduced Graphene Oxide-Based Nickel Catalysts for the Hydrogenation of Carbon Dioxide to Methane |
| title_sort | influence of nickel loading on reduced graphene oxide based nickel catalysts for the hydrogenation of carbon dioxide to methane |
| topic | methanation carbon dioxide nickel-based catalyst graphene support |
| url | https://www.mdpi.com/2073-4344/10/5/471 |
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