Supercharged CO2 Photothermal Catalytic Methanation: High Conversion,Rate, and Selectivity |
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| Authors: | Xianglin Zhu Huibin Zong Camilo J Viasus Pérez Honghai Miao Wei Sun Zhimin Yuan Shenghua Wang Guixin Zeng Hui Xu Zaiyong Jiang Geoffrey A Ozin |
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| Institution: | 1. Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013 Jiangsu, P. R. China;2. Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario, M5S 3H6 Canada;3. State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027 P. R. China;4. School of Chemistry & Chemical Engineering and Environmental Engineering, Weifang University, Weifang, 261061 Shandong, P. R. China |
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| Abstract: | To overcome the thermodynamic and kinetic impediments of the Sabatier CO2 methanation reaction, the process must be operated under very high temperature and pressure conditions, to obtain an industrially viable conversion, rate, and selectivity. Herein, we report that these technologically relevant performance metrics have been achieved under much milder conditions using solar rather than thermal energy, where the methanation reaction is enabled by a novel nickel-boron nitride catalyst. In this regard, an in situ generated HOB⋅⋅⋅B surface frustrated Lewis's pair is considered responsible for the high Sabatier conversion 87.68 %, reaction rate 2.03 mol gNi−1h−1, and near 100 % selectivity, realized under ambient pressure conditions. This discovery bodes well for an opto-chemical engineering strategy aimed at the development and implementation of a sustainable ‘Solar Sabatier’ methanation process. |
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| Keywords: | BN CO2 Hydrogenation Frustrated Lewis Pair Methanation Photothermal Catalysis |
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