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- W2014070535 abstract "MgO–ZrO2 mesoporous support (Zr/Mg molar ratio = 9) impregnated with 6 wt% Ni, 6 wt% Co and 3 wt% of both Ni and Co were prepared using a novel surfactant assisted-impregnation method. Carbon dioxide reforming of methane using these catalysts was studied in a quartz tube microreactor at a CH4/CO2 feed ratio of 1, 750 °C, 1 atm with a gas hourly space velocity of 125,000 mL/g/h. Based on reactant's conversion and syngas production, the bimetallic catalyst was the most suitable catalyst for the reaction. The catalyst exhibited high and constant activity during 40 h reaction time with methane and carbon dioxide conversions of 80% and 84%, respectively with a syngas ratio close to unity without significant deactivation as compared to the respective monometallic catalysts. For longer time on stream, the catalyst showed constant activity up to 60 h after which it gradually decreased. The bimetallic catalyst also exhibited excellent regenerability by restoring its initial catalytic activity after 1 h of regeneration in air. The catalysts were also characterized by XRD, XPS, N2-physisorption, H2-chemisorption, TGA-DTA, HRTEM, H2-TPR, TPH and SEM. The high performance of the bimetallic catalyst was due to the stabilization of t-phase in zirconia, better metal dispersion, small metal particle size and synergetic effect between Ni and Co particles. The XPS results showed that bimetallic catalyst had the ability to hinder metal oxidation and exhibited presence of higher surface basicity which were responsible to maintain the stability of the catalyst." @default.
- W2014070535 created "2016-06-24" @default.
- W2014070535 creator A5017720443 @default.
- W2014070535 creator A5037382995 @default.
- W2014070535 creator A5077826336 @default.
- W2014070535 date "2010-10-11" @default.
- W2014070535 modified "2023-10-17" @default.
- W2014070535 title "Utilization of greenhouse gases through carbon dioxide reforming of methane over Ni–Co/MgO–ZrO2: Preparation, characterization and activity studies" @default.
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- W2014070535 doi "https://doi.org/10.1016/j.apcatb.2010.08.013" @default.
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