Hydrogen production by steam reforming of methane over nickel based structured catalysts supported on calcium aluminate modified SiC |
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| Affiliation: | 1. Clean Energy Research Center, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul 02792, South Korea;2. Department of Chemical & Biological Engineering, Korea University, Anam-ro 145, Seongbuk-gu, Seoul 02841, South Korea;3. Division of Energy & Environment Technology, KIST School, Korea University of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul 02792, South Korea;1. Department of Chemistry, Nanchang University, Nanchang 330031, PR China;2. Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China;3. Jiangxi Golden Century Advance Materials Co. Ltd, Nanchang 330013, PR China;1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China;2. Qilu Branch Corporation of SINOPEC, Zibo, Shandong 255400, PR China;1. Facultad de Ciencias y Tecnologías Químicas Departamento de Ingeniería Química, Universidad de Castilla la Mancha, Avenida de Camilo José Cela 12, 13071 Ciudad Real, Spain;2. Escuela de Ingenieros Agrónomos Departamento de Ingeniería Química, Universidad de Castilla la Mancha, Avenida de Camilo José Cela 12, 13071 Ciudad Real, Spain;3. Institut de recherches sur la catalyse et l’environment de Lyon (IRCELYON), 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France;1. College of Chemistry, Nanchang University, Nanchang, 330031, PR China;2. Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China;3. Jiangxi Golden Century Advance Materials Co. Ltd, Nanchang, 330013, PR China |
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| Abstract: | Steam reforming of methane (SRM) is an immensely important process for the production of hydrogen and syngas (H2, CO). Ni-based alumina supported catalysts are conventionally used in the SRM process, but the coke formation and sintering are still challenging problems to develop an economical process. It was reported that the Lewis basicity of the support obviously plays a crucial role to prevent the coke formation, and basic supports such as calcium aluminate (CAx) has shown superior resistance for carbon deposition, but in case of CAx the major drawback is low thermal conductivity.In this work, in order to improve the catalytic performance of SRM, the Nickel based structured catalysts supported on the modified calcium aluminate (CAx) with silicon carbide (SiC) were prepared. All synthesized catalysts were characterized by various techniques including N2-physisorption, XRD, H2-TPR, XPS, CO2-TPR, TGA, TPH, and thermal conductivity analysis. It was found that the CAx play an important role obtaining higher hydrogen yield and improved resistance to the carbon deposition. Even though, the methane conversion and H2 yield efficiency for Ni supported on SiC modified CAx/Al2O3 (NASC) catalyst was slightly lower than NAS and NAC catalysts, which caused by the weak interaction of active metal, but the NASC catalyst showed superior resistance to the coke formation compared to other catalysts. It was concluded that NASC catalysts is a promising candidates for the production of hydrogen by the steam reforming of methane. |
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| Keywords: | Hydrogen Steam reforming of methane Catalyst shaping Calcium aluminate Thermal conductivity SiC |
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