Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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The Effect of Calcination Temperature on the Performance of Ni-Ce0.8Zr0.2O2 Catalysts for Steam Reforming of Methane under Severe Conditions

가혹한 조건의 SRM 반응에서 Ni-Ce0.8Zr0.2O2 촉매의 소성온도에 따른 영향

  • Jang, Won-Jun (Department of Environmental Engineering, Yonsei University) ;
  • Jeong, Dae-Woon (Department of Environmental Engineering, Yonsei University) ;
  • Shim, Jae-Oh (Department of Environmental Engineering, Yonsei University) ;
  • Roh, Hyun-Seog (Department of Environmental Engineering, Yonsei University)
  • Received : 2012.05.22
  • Accepted : 2012.06.22
  • Published : 2012.06.30
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Abstract

Steam reforming of methane (SRM) is the primary method to produce hydrogen. Commercial Ni-based catalysts have been optimized for SRM with excess steam ($H_2O/CH_4$ > 2.5) at high temperatures (> $700^{\circ}C$). However, commercial catalysts are not suitable under severe conditions such as stoichiometric steam over methane ratio ($H_2O/CH_4$ = 1.0) and low temperature ($600^{\circ}C$). In this study, 15wt.% Ni catalysts supported on $Ce_{0.8}Zr_{0.2}O_2$ were prepared at various calcination temperatures for SRM at a very high gas hourly space velocity (GHSV) of $621,704h^{-1}$. The calcination temperature was systematically varied to optimize 15wt.% $Ni-Ce_{0.8}Zr_{0.2}O_2$ catalyst at a $H_2O/CH_4$ ratio of 1.0 and at $600^{\circ}C$. 15wt.% $Ni-Ce_{0.8}Zr_{0.2}O_2$ catalyst calcined at $500^{\circ}C$ exhibited the highest $CH_4$ conversion as well as stability with time on stream. Also, 15wt.% $Ni-Ce_{0.8}Zr_{0.2}O_2$ catalyst calcined at $500^{\circ}C$ showed the highest $H_2$ yield (58%) and CO yield (21%) among the catalysts. This is due to complex NiO species, which have relatively strong metal to support interaction (SMSI).

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References

  1. P. Ferreira-Aparicio, M. J. Benito, J. L. Sanz, "New Trends in Reforming Technologies: from hydrogen Industrial Plants to Multifuel Microreformers", Catal. Rev. - Sci. Eng., Vol. 47, No. 4, 2005, pp. 491-588. https://doi.org/10.1080/01614940500364958
  2. D.-W. Jeong, J.-O. Shim, W.-J. Jang, H.-S. Roh, "A Study on Pt-Na/$CeO_{2}$ Catalysts for Single Stage Water Gas Shift Reaction", Trans. of the Korean Hydrogen and New Energy Society, Vol. 23, No. 2, 2012, pp. 111-116. https://doi.org/10.7316/KHNES.2012.23.2.111
  3. D.-J. Seo, W.-L. Yoon, K.-S. Kang, J.-W. Kim, "Patent Trend for Hydrogen Production Technology by Steam Reforming of Natural Gas", Trans. of the Korean Hydrogen and New Energy Society, Vol. 18, No. 4, 2007, pp. 464-480.
  4. H.-S. Roh, K. Y. Koo, U. D. Joshi, W. L. Yoon, "Combined $H_{2}O$ and $CO_{2}$ Reforming of Methane Over Ni-Ce-$ZrO_{2}$ Catalysts for Gas to Liquids (GTL)", Catal. Lett., Vol. 125, No. 3-4, 2008, pp. 283-288. https://doi.org/10.1007/s10562-008-9560-z
  5. H.-S. Roh, I.-H. Eum, D.-W. Jeong, "Low temperature steam reforming of methane over Ni- $Ce_{(1-x)}Zr_{(x)}O_{2}$ catalysts under severe conditions", Renew. Energ., Vol. 42, 2012, pp. 212-216. https://doi.org/10.1016/j.renene.2011.08.013
  6. H. S. Potdar, H.-S. Roh, K.-W. Jun, M. Ji, Z.-W. Liu, "Carbon dioxide reforming of methane over co-precipitated $Ni-Ce-ZrO_{2}$ catalysts", Catal. Lett., Vol. 84, No. 1-2, 2002, pp. 95-100. https://doi.org/10.1023/A:1021036920308
  7. H.-S. Roh, I.-H. Eum, D.-W. Jeong, B. E. Yi, J.-G. Na, C. H. Ko, "The effect of calcination temperature on the performance of $Ni/MgO-Al_{2}O_{3}$ catalysts for decarboxylation of oleic acid", Catal. Today, Vol. 164, No. 1, 2011, pp. 457-460. https://doi.org/10.1016/j.cattod.2010.10.048
  8. H.-S. Roh, H. S. Potdar, K.-W. Jun, "Carbon dioxide reforming of methane over co-precipitated $Ni-CeO_{2}$, $Ni-ZrO_{2}$ and $Ni-Ce-ZrO_{2}$ catalysts", Catal. Today, Vol. 93-95, 2004, pp. 39-44. https://doi.org/10.1016/j.cattod.2004.05.012
  9. S. Wang, G.Q.M. Lu, "$CO_{2}$ reforming of methane on Ni catalysts: Effects of the support phase and preparation technique", Appl. Catal. B: Envion., Vol. 16, No. 3, 1998, pp. 269-277. https://doi.org/10.1016/S0926-3373(97)00083-0