Abstract
Abstract A series of Ni based catalysts prepared by incipient wetness method were characterized by chemisorption and studied for CO 2 methanation. Ru had apparently a positive effect on the active metal surface area, and thus the catalytic activity. The CO 2 conversion was greatly affected by temperature where the conversion ranged from 12%-85% at temperatures of 300 to 400 o C on the 12% Ni/Al 2 O 3 catalyst. At 350 o C, higher Ni loading resulted in increased activity. The incorporation of 0.5% Ru lead to a drastic increase in catalytic activity, which can be explained by increased reducibility and a synergetic effect between Ni and Ru, and was further enhanced by increased Ni loading. Addition of CH 4 at twice the initial concentration of CO 2 to the feed gas mixture was found to decrease the conversion from 52% to 48% at 350 o C on the 20% Ni/Al 2 O 3 catalyst, whereas only a slight reduction in selectivity was observed. The results preliminary demonstrate that high methane purity can be achieved from a biogas feed stream over Ni based catalysts.
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
