基于多孔泡沫Ni/Al2O3催化剂的千瓦级太阳能驱动甲烷碳循环重整性能评估

Abstract Solar-driven dry methane reforming (DMR) presents a promising route for sustainable solar energy storage through chemical fuel production while mitigating greenhouse gas emissions. However, its practical application is hindered by catalyst deactivation from carbon deposition and constrained syngas utilization. To address these limitations, we propose solar methane carbon cyclic reforming (MCCR), an innovative stepwise process that decouples DMR into the catalytic methane decomposition and the reverse Boudouard reactions, enabling separate H 2 and CO production and realizing a more attractive solar to fuel conversion process. The method’s feasibility is initially validated through 100 successful thermogravimetric test cycles, demonstrating exceptional carbon elimination capability with a 99.9 % carbon removal ratio. Subsequently, the first kW th scale demonstration of solar-driven MCCR using self-developed porous foam catalyst is achieved, attaining peak and average solar-to-fuel efficiencies of 29.17 % and 24.55 % respectively across 20 stable cycles in nearly 6 h. These findings demonstrate MCCR’s potential for scalable solar fuel production and offer a viable solution to contemporary energy challenges.