Dry Reforming of Methane over Ni/WC Catalysts: Effect of Ni Content and CH4:CO2 Ratio
| Parent link: | Materials.— .— Basel: MDPI AG Vol. 18, iss. 17.— 2025.— Article number 3990, 17 p. |
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| Altri autori: | , , , , , |
| Riassunto: | Title screen Dry reforming of methane (DRM) into synthesis gas (CO + H2) is one of the most important chemical reactions for industrial hydrogen production. It also enables the synthesis of hydrocarbons (liquid fuels) and other valuable products, providing an effective route for utilizing greenhouse gases. However, a major challenge limiting the implementation and scale-up of DRM is the high cost of stable and active noble metal-based catalysts, or the rapid deactivation of nickel- and cobalt-based catalysts due to coking and sintering of the active metal particles. In this context, the present work demonstrates that combining a highly active and inexpensive component (Ni) with tungsten carbide produces a composite material exhibiting high catalytic activity and resistance to oxidation and coking during DRM. Tungsten carbide was synthesized using a vacuum-free electric arc method, and nickel was subsequently deposited in varying amounts (1–25 wt.%) using the deposition–precipitation method with NaOH (DP). The resulting catalysts were characterized by X-ray diffraction, temperature-programmed reduction and Raman spectroscopy. Their performance was evaluated under DRM conditions, at atmospheric pressure and 800 °C, using different CH4:CO2 ratios. The most effective oxidation/(re)carbonization cycle, ensuring catalyst stability during DRM by balancing the rates of carbon formation and removal from the catalyst surface, was achieved with a nickel content of 20 wt.% and a CH4 to CO2 ratio of 0.67 in the feed gas mixture Текстовый файл |
| Lingua: | inglese |
| Pubblicazione: |
2025
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| Soggetti: | |
| Accesso online: | https://doi.org/10.3390/ma18173990 |
| Natura: | Elettronico Capitolo di libro |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=683054 |
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| 200 | 1 | |a Dry Reforming of Methane over Ni/WC Catalysts: Effect of Ni Content and CH4:CO2 Ratio |f Zhanar Bolatova, Svetlana Kuznetsova, Olga Vedishcheva [et al.] | |
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| 330 | |a Dry reforming of methane (DRM) into synthesis gas (CO + H2) is one of the most important chemical reactions for industrial hydrogen production. It also enables the synthesis of hydrocarbons (liquid fuels) and other valuable products, providing an effective route for utilizing greenhouse gases. However, a major challenge limiting the implementation and scale-up of DRM is the high cost of stable and active noble metal-based catalysts, or the rapid deactivation of nickel- and cobalt-based catalysts due to coking and sintering of the active metal particles. In this context, the present work demonstrates that combining a highly active and inexpensive component (Ni) with tungsten carbide produces a composite material exhibiting high catalytic activity and resistance to oxidation and coking during DRM. Tungsten carbide was synthesized using a vacuum-free electric arc method, and nickel was subsequently deposited in varying amounts (1–25 wt.%) using the deposition–precipitation method with NaOH (DP). The resulting catalysts were characterized by X-ray diffraction, temperature-programmed reduction and Raman spectroscopy. Their performance was evaluated under DRM conditions, at atmospheric pressure and 800 °C, using different CH4:CO2 ratios. The most effective oxidation/(re)carbonization cycle, ensuring catalyst stability during DRM by balancing the rates of carbon formation and removal from the catalyst surface, was achieved with a nickel content of 20 wt.% and a CH4 to CO2 ratio of 0.67 in the feed gas mixture | ||
| 336 | |a Текстовый файл | ||
| 461 | 1 | |t Materials |n MDPI AG |c Basel | |
| 463 | 1 | |t Vol. 18, iss. 17 |v Article number 3990, 17 p. |d 2025 | |
| 610 | 1 | |a CH4 dry reforming | |
| 610 | 1 | |a tungsten carbide | |
| 610 | 1 | |a Ni-based catalyst | |
| 610 | 1 | |a catalyst stability | |
| 610 | 1 | |a oxidation resistance | |
| 610 | 1 | |a coking resistance | |
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 701 | 1 | |a Bolatova |b Zh. S. |c specialist in the field of material science |c engineer, junior researcher at Tomsk Polytechnic University |f 1996- |g Zhanar Sanatovna |9 22679 | |
| 701 | 1 | |a Kuznetsova |b S. N. |c chemical technologist |c research engineer at Tomsk Polytechnic University |f 1990- |g Svetlana Nikolaevna |9 22863 | |
| 701 | 1 | |a Vedishcheva |b O. |g Olga | |
| 701 | 1 | |a Carabineiro |b S. A. C. |g Sonia Alexandra Correia | |
| 701 | 1 | |a Kolobova |b E. N. |c Chemical Engineer |c design engineer of Tomsk Polytechnic University |f 1989- |g Ekaterina Nikolaevna |9 17871 | |
| 701 | 1 | |a Pestryakov |b A. N. |c Chemist |c Professor of Tomsk Polytechnic University, Doctor of Chemical Science |f 1963- |g Aleksey Nikolaevich |9 14796 | |
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