TY - JOUR
T1 - Hydrogen production by steam reforming of methane over nickel based structured catalysts supported on calcium aluminate modified SiC
AU - Noh, Young Su
AU - Lee, Kwan Young
AU - Moon, Dong Ju
N1 - Funding Information:
This work was supported and funded by Korea Institute of Science and Technology (Project No. 2E29740 ) and National Research Council of Science and Technology (Project No. 2N44500 ).
Publisher Copyright:
© 2019 Hydrogen Energy Publications LLC
PY - 2019/8/9
Y1 - 2019/8/9
N2 - 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.
AB - 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.
KW - Calcium aluminate
KW - Catalyst shaping
KW - Hydrogen
KW - SiC
KW - Steam reforming of methane
KW - Thermal conductivity
UR - http://www.scopus.com/inward/record.url?scp=85066492695&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2019.04.287
DO - 10.1016/j.ijhydene.2019.04.287
M3 - Article
AN - SCOPUS:85066492695
SN - 0360-3199
VL - 44
SP - 21010
EP - 21019
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 38
ER -
