scholarly journals Steam Reforming of Hydrocarbons and Water Gas Shift Reaction Through a Wall of Stabilized Zirconia Used as Hydrogen Separator

1984 ◽  
Vol 57 (11) ◽  
pp. 3286-3289 ◽  
Author(s):  
Kiyoshi Otsuka ◽  
Seiichiro Yokoyama ◽  
Akira Morikawa
Keyword(s):  
Steam Reforming ◽  
Water Gas Shift ◽  
Water Gas Shift Reaction ◽  
Stabilized Zirconia ◽  
Shift Reaction ◽  
Water Gas ◽  
Steam Reforming Of Hydrocarbons

scholarly journals Use of CuNi/YSZ and CuNi/SDC Catalysts for the Reverse Water Gas Shift Reaction

2015 ◽  
Vol 2015 ◽  
pp. 1-9
Author(s):  
Maxime Lortie ◽  
Rima J. Isaifan
Keyword(s):  
Oxygen Vacancies ◽  
Yttria Stabilized Zirconia ◽  
Water Gas Shift ◽  
Water Gas Shift Reaction ◽  
Stabilized Zirconia ◽  
Reverse Water Gas Shift ◽  
Partial Pressures ◽  
Modified Polyol Method ◽  
Shift Reaction ◽  
Water Gas

Cu50Ni50 nanoparticles were synthesized using a modified polyol method and deposited on samarium-doped ceria, SDC, and yttria-stabilized zirconia, YSZ, supports to form reverse water-gas shift, RWGS, catalysts. The best CO yields, obtained with the Cu50Ni50/SDC catalyst, were about 90% of the equilibrium CO yields. In contrast CO yields using Pt/SDC catalysts were equal to equilibrium CO yields at 700°C. Catalyst selectivity to CO was 100% at hydrogen partial pressures equal to CO2 partial pressures, 1 kPa, and decreased as methane was formed when the hydrogen partial pressure was 2 kPa or greater. The reaction results were explained using a combination of Eley-Rideal and Langmuir-Hinshelwood mechanisms that involved adsorption on the metal surface and the concentration of oxygen vacancies in the support. Finally the Cu50Ni50/SDC catalyst was found to be thermally stable for 48 hours at 600/700°C.

Sign in / Sign up

Export Citation Format

Share Document