The reforming of CH4 and CO2 into syngas is a highly relevant technology for energy conservation and reducing greenhouse gas emissions, attracting widespread attention in the industry. Inspired by this, this work proposes a general criterion for coke-resistant nickel-based catalysts. By leveraging the high-entropy effect and the lattice distortion of the structure, a high-entropy (NiCaMgZnCo)Al10Ox catalyst was synthesized. The high-entropy oxide exhibited good activity and stability during the DRM reaction over 100 h at 800°C and 650°C, producing only a minimal amount of easily removable carbon deposition. O2-TPO, CO2-TPD, CH4-TPSR, CO2-TPSR, DFT and in situ DRIFT were employed to investigate the mechanism of carbon deposition elimination on the surface of the high-entropy catalyst. Then, a high-entropy strategy for designing coke-resistant catalysts was proposed. This strategy may soon inspire the development of catalysts with enhanced stability and anti-coke deposition properties for various catalytic applications.

中文翻译：

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通过调节构型熵增强镍基尖晶石型氧化物的抗焦性


将 CH4 和 CO2 重整成合成气是一项与节能和减少温室气体排放高度相关的技术，引起了业界的广泛关注。受此启发，本研究提出了耐焦镍基催化剂的通用标准。利用结构的高熵效应和晶格畸变，合成了一种高熵 （NiCaMgZnCo）Al10Ox 催化剂。在 800°C 和 650°C 的 DRM 反应中，高熵氧化物在 100 小时内表现出良好的活性和稳定性，仅产生极少量的易去除碳沉积物。采用 O2-TPO、CO2-TPD、CH4-TPSR、CO2-TPSR、DFT 和原位 DRIFT 研究了高熵催化剂表面碳沉积消除的机理。然后，提出了一种设计抗焦催化剂的高熵策略。这一策略可能很快就会激发开发具有增强稳定性和抗焦炭沉积性能的催化剂，用于各种催化应用。