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Structured silicalite-1 encapsulated Ni catalyst supported on SiC foam for dry reforming of methane |
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| Authors: | Huanhao Chen Yan Shao Yibing Mu Huan Xiang Rongxin Zhang Yabin Chang Christopher Hardacre Chularat Wattanakit Yilai Jiao Xiaolei Fan |
| Affiliation: | 1. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, China;2. School of Environmental Science and Engineering, Nanjing Tech University, Nanjing, China;3. Department of Chemical Engineering and Analytical Science, School of Engineering, The University of Manchester, Manchester, UK Contribution: Data curation, Investigation;4. Department of Chemical Engineering and Analytical Science, School of Engineering, The University of Manchester, Manchester, UK Contribution: Data curation;5. Department of Chemical Engineering and Analytical Science, School of Engineering, The University of Manchester, Manchester, UK;6. Department of Materials, School of Natural Science, The University of Manchester, Manchester, UK Contribution: Data curation;7. Department of Chemical Engineering and Analytical Science, School of Engineering, The University of Manchester, Manchester, UK Contribution: Supervision;8. School of Energy Science and Engineering and Nanocatalysts and Nanomaterials for Sustainable Energy and Environment Research Network of NANOTEC, Vidyasirimedhi Institute of Science and Technology, Rayong, Thailand Contribution: Investigation;9. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China |
| Abstract: | Structured silicalite-1 zeolite encapsulated Ni catalyst supported on silicon carbide foam (i.e., Ni@S1-SiC) was prepared using a new yet simple one-pot method, showing the significantly improved anti-sintering and anti-coking performance in comparison with the conventional supported and encapsulated Ni catalysts (i.e., Ni/S1, Ni/S1-SiC, and Ni@S1), in catalytic dry reforming of methane (DRM). The developed Ni0.08@S1-SiC catalyst showed high CO2/CH4 conversions of >85% and H2/CO molar ratio of >0.85 at 700°C, outperforming other control catalysts under investigation. Additionally, the Ni0.08@S1-SiC catalyst demonstrated high turnover frequency (TOF) values of ~5.6 and ~2.1/s regarding to CO2/CH4 conversions at 400°C, exhibiting excellent stability and low pressure-drop during 100 hr on stream evaluation. Post-reaction characterization of the used catalysts demonstrated that the combination of zeolite encapsulated Ni catalysts and SiC foam enabled well-dispersed and ultrafine Ni nanoparticles, low pressure drop and intensified transfer steps, presented excellent anti-sintering and anti-coking abilities. |
| Keywords: | anti-sintering and -coking dry reforming of methane (DRM) encapsulated Ni catalyst silicalite-1 silicon carbide (SiC) foam |