Natural gas and carbon dioxide are converted into synthesis gas through a reforming reaction, and further funding and response are further transformed into various important chemicals. This can not only achieve the purpose of efficient natural gas utilization, but also effectively reduce greenhouse gas emissions. However, the carbon monoxide disproportionation reaction and methane pyrolysis in the conventional reforming reaction are prone to carbon deposition, and the problem of catalyst sintering/agglomeration at high temperatures also results in the attenuation of dry reforming performance.
Recently, the Xie Kui Group of Key Laboratory of Functional Nanostructure Design and Assemblies, Institute of Structure Research, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, catalyzes the electrolysis of carbon dioxide (CO2+2e-=CO+O2-) and methane (CH4+O2) through a solid oxide electrolytic cell. -=CO+2H2+2e-) Combining two gas-phase electrochemical conversion processes to achieve electrocatalytic synthesis of methane/carbon dioxide synthesis gas and clarifying the reforming mechanism of CH4/CO2. In this study, the in situ control of the Wiener scale metal/oxide interfacial structure and composition of the ceramic electrode resulted in the anti-carbon deposition and high-temperature stability of the composite system for CH4/CO2 atmosphere, and the electrochemical reforming of CH4/CO2 to syngas. The atomic efficiency and current efficiency are up to 100%.
Related research results were published in Science Advances. The study was supported by the National Fund's major research program (Catalytic Science of Carbon-based Energy Conversion and Utilization) and the "Hundred Talents Program" of Fujian's entrepreneurial and innovative talents.
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