Catalytic Performance of Bimetallic Cobalt–Nickel/Graphene Oxide for Carbon Dioxide Reforming of Methane
The design of economical and robust catalysts is a substantial challenge for the dry reforming of methane (DRM). Monometallic nickel-based catalysts used for DRM reactions had comparable activity to noble metals. However, they turned out to be less stable during the reactions. As a continuation of t...
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| Format: | Article |
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MDPI AG
2023-11-01
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| Series: | ChemEngineering |
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| Online Access: | https://www.mdpi.com/2305-7084/7/6/107 |
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| author | Sharifah Nur Sorfina Syed Abu Bakar May Ali Alsaffar Bawadi Abdullah Maizatul Shima Shaharun Sureena Abdullah Bamidele Victor Ayodele |
| author_facet | Sharifah Nur Sorfina Syed Abu Bakar May Ali Alsaffar Bawadi Abdullah Maizatul Shima Shaharun Sureena Abdullah Bamidele Victor Ayodele |
| author_sort | Sharifah Nur Sorfina Syed Abu Bakar |
| collection | DOAJ |
| description | The design of economical and robust catalysts is a substantial challenge for the dry reforming of methane (DRM). Monometallic nickel-based catalysts used for DRM reactions had comparable activity to noble metals. However, they turned out to be less stable during the reactions. As a continuation of the interest in synthesizing catalysts for DRM, this paper evaluates the catalytic performance of bimetallic Co–Ni catalysts regarding their synergy effect, with graphene oxide (GO) as support for the first time. The synthesized bimetallic catalysts prepared via the wet-impregnation method were characterized using N<sub>2</sub> physisorption analysis, scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and X-ray diffraction (XRD). The catalytic test was performed in a stainless-steel tubular reactor in atmospheric conditions with a reaction temperature of 800 °C, time-on-stream (TOS) of 300 min and CH<sub>4</sub>: CO<sub>2</sub> being fed with a ratio of 1:1. The bimetallic 10 wt%Co–10 wt%Ni/GO and 20 wt%Co–10 wt%Ni/GO catalysts had a similar BET specific surface area in N<sub>2</sub> physisorption analysis. The XRD pattern displayed a homogeneous distribution of the Co and Ni on the GO support, which was further validated through SEM–EDX. The conversion of CO<sub>2</sub>, CH<sub>4</sub>, and H<sub>2</sub> yield decreased with reaction time due to the massive occurrence of side reactions. High conversions for CO<sub>2</sub> and CH<sub>4</sub> were 94.26% and 95.24%, respectively, attained by the bimetallic 20 wt%Co–10 wt%Ni/GO catalyst after 300 min TOS, meaning it displayed the best performance in terms of activity among all the tested catalysts. |
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| language | English |
| last_indexed | 2024-03-08T20:54:58Z |
| publishDate | 2023-11-01 |
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| spelling | doaj.art-a7620eca3b8247119b81a0142c7edf092023-12-22T13:59:59ZengMDPI AGChemEngineering2305-70842023-11-017610710.3390/chemengineering7060107Catalytic Performance of Bimetallic Cobalt–Nickel/Graphene Oxide for Carbon Dioxide Reforming of MethaneSharifah Nur Sorfina Syed Abu Bakar0May Ali Alsaffar1Bawadi Abdullah2Maizatul Shima Shaharun3Sureena Abdullah4Bamidele Victor Ayodele5Department of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Perak, MalaysiaDepartment of Chemical Engineering, University of Technology-Iraq, Baghdad 10066, IraqDepartment of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Perak, MalaysiaCO<sub>2</sub> Research Center (CO<sub>2</sub>RES), Institute of Contaminant Management, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Perak, MalaysiaFaculty of Chemical and Process Engineering Technology, College of Engineering Technology, Universiti Malaysia Pahang Al-Sultan Abdullah, Gambang-Kuantan 26300, Pahang, MalaysiaDepartment of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Perak, MalaysiaThe design of economical and robust catalysts is a substantial challenge for the dry reforming of methane (DRM). Monometallic nickel-based catalysts used for DRM reactions had comparable activity to noble metals. However, they turned out to be less stable during the reactions. As a continuation of the interest in synthesizing catalysts for DRM, this paper evaluates the catalytic performance of bimetallic Co–Ni catalysts regarding their synergy effect, with graphene oxide (GO) as support for the first time. The synthesized bimetallic catalysts prepared via the wet-impregnation method were characterized using N<sub>2</sub> physisorption analysis, scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and X-ray diffraction (XRD). The catalytic test was performed in a stainless-steel tubular reactor in atmospheric conditions with a reaction temperature of 800 °C, time-on-stream (TOS) of 300 min and CH<sub>4</sub>: CO<sub>2</sub> being fed with a ratio of 1:1. The bimetallic 10 wt%Co–10 wt%Ni/GO and 20 wt%Co–10 wt%Ni/GO catalysts had a similar BET specific surface area in N<sub>2</sub> physisorption analysis. The XRD pattern displayed a homogeneous distribution of the Co and Ni on the GO support, which was further validated through SEM–EDX. The conversion of CO<sub>2</sub>, CH<sub>4</sub>, and H<sub>2</sub> yield decreased with reaction time due to the massive occurrence of side reactions. High conversions for CO<sub>2</sub> and CH<sub>4</sub> were 94.26% and 95.24%, respectively, attained by the bimetallic 20 wt%Co–10 wt%Ni/GO catalyst after 300 min TOS, meaning it displayed the best performance in terms of activity among all the tested catalysts.https://www.mdpi.com/2305-7084/7/6/107cobaltdry reforming of methanegraphene oxidenickelhydrogen-rich syngas |
| spellingShingle | Sharifah Nur Sorfina Syed Abu Bakar May Ali Alsaffar Bawadi Abdullah Maizatul Shima Shaharun Sureena Abdullah Bamidele Victor Ayodele Catalytic Performance of Bimetallic Cobalt–Nickel/Graphene Oxide for Carbon Dioxide Reforming of Methane ChemEngineering cobalt dry reforming of methane graphene oxide nickel hydrogen-rich syngas |
| title | Catalytic Performance of Bimetallic Cobalt–Nickel/Graphene Oxide for Carbon Dioxide Reforming of Methane |
| title_full | Catalytic Performance of Bimetallic Cobalt–Nickel/Graphene Oxide for Carbon Dioxide Reforming of Methane |
| title_fullStr | Catalytic Performance of Bimetallic Cobalt–Nickel/Graphene Oxide for Carbon Dioxide Reforming of Methane |
| title_full_unstemmed | Catalytic Performance of Bimetallic Cobalt–Nickel/Graphene Oxide for Carbon Dioxide Reforming of Methane |
| title_short | Catalytic Performance of Bimetallic Cobalt–Nickel/Graphene Oxide for Carbon Dioxide Reforming of Methane |
| title_sort | catalytic performance of bimetallic cobalt nickel graphene oxide for carbon dioxide reforming of methane |
| topic | cobalt dry reforming of methane graphene oxide nickel hydrogen-rich syngas |
| url | https://www.mdpi.com/2305-7084/7/6/107 |
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