Abstract
The catalytic CO2 methanation not only reduces the CO2 emission but also provides methane as an important basic chemical raw material. Here, we report an efficient bimetallic co-loaded catalyst (Rh-Ni)/αβ-MoXC for CO2 methanation. The CH4 selectivity on (Rh-Ni)/αβ-MoXC achieves 86.6%, and the CO2 conversion rate reaches 61.0%. All the prepared catalysts show excellent catalytic properties. Different roles are proved for each component of (Rh-Ni)/αβ-MoXC catalyst, Rh could improve the hydrogen reducing capacity of the material effectively. Ni and Rh bimetals on the surface of the αβ-MoXC support significantly increase the adsorption capacity of CO2 which is a benefit to the catalytic activity of (Rh-Ni)/αβ-MoXC. The joint effects and different roles of each component of (Rh-Ni)/αβ-MoXC account for the superiority of (Rh-Ni)/αβ-MoXC.
Graphic abstract
The (1.0% Rh-3.0% Ni)/αβ-MoXC shows an excellent catalytic performance for CO2 methanation reaction. Ni and Rh bimetals on the surface of the αβ-MoXC support increases the adsorption capacity of CO2 which is benefit to the activity of (Rh-Ni)/αβ-MoXC. The joint effect of bimetals and αβ-MoXC accounts for the superiority of (Rh-Ni)/αβ-MoXC.
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Acknowledgements
This work is funded by the Project of Key Research Plan of Ningxia (2019BDE03003), National Natural Science Foundation of China (NSFC, 21862014, 21862013), and the National First-rate Discipline Construction Project of Ningxia (Chemical Engineering and Technology).
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LIN, K., YANG, X., MA, X. et al. Efficient bimetal loaded (Rh-Ni)/αβ-MoxC catalyst for CO2 methanation. J Chem Sci 133, 108 (2021). https://doi.org/10.1007/s12039-021-01972-9
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DOI: https://doi.org/10.1007/s12039-021-01972-9