Catalytic performance and carbon deposition behavior of noble metals promoted NiO-MgO solid solution in oxidative steam reforming of methane

Mohammad Nurunnabi, Ken Ichiro Fujimoto, Kimihito Suzuki, Kimio Kunimori, Keiichi Tomishige

Research output: Contribution to conferencePaperpeer-review

Abstract

Performance of NiO-MgO solid solution with the promoting effect of noble metals such as Rh, Pt and Pd on catalytic activity and carbon deposition were investigated in oxidative steam reforming of methane under atmospheric and pressurized conditions. At low W/F condition such as 0.13 gh/mol, small amount of noble metals promoted Ni0.2Mg0.8O exhibited much higher catalytic activity than Ni0.2Mg0.8O catalyst which was showed combustion activity due to the oxidation deactivation in oxidative steam reforming of methane under atmospheric pressure. In the case of TPR profiles, reduction degree of Ni over noble metals catalysts was more effective to the high catalyst reducibility than that on NiO-MgO solid solution. Under pressurized conditions, large amount of carbon was formed on Ni 0.2Mg0.8O; where as, the amount of deposited carbon was negligible on Rh catalyst. Especially, small amount of Rh addition such as 0.035 % Rh/Ni0.2Mg0.8O catalyst is extremely stable and it is completely inhibited the carbon deposition under pressurized conditions in oxidative steam reforming of methane.

Original languageEnglish
Publication statusPublished - 2006 Dec 1
Externally publishedYes
Event2006 AIChE Spring National Meeting - 5th World Congress on Particle Technology - Orlando, FL, United States
Duration: 2006 Apr 232006 Apr 27

Other

Other2006 AIChE Spring National Meeting - 5th World Congress on Particle Technology
CountryUnited States
CityOrlando, FL
Period06/4/2306/4/27

Keywords

  • Carbon deposition
  • Deactivation
  • NiO-MgO solid solution
  • Oxidative steam reforming of methane
  • Rh

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

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