Core Insights - The research team from the Shanxi Coal Chemical Research Institute and Peking University has achieved a breakthrough in iron-based Fischer-Tropsch synthesis catalysts, achieving less than 1% carbon dioxide selectivity and over 85% olefin selectivity, providing new approaches for clean utilization of high-carbon resources [1][2]. Group 1: Research Achievements - The study published in "Science" demonstrates a significant advancement in catalyst performance, crucial for the production of olefins, which are key raw materials for synthetic fibers, rubber, and plastics [1]. - The traditional iron-based catalysts have limitations due to their multiple activities, leading to high carbon dioxide generation, which restricts carbon utilization efficiency and olefin selectivity [1]. Group 2: Innovative Strategies - The research team introduced a trace halogenated alkane co-feeding strategy, which allows for effective regulation of surface oxygen species at the molecular level, enhancing catalytic performance without altering the catalyst formulation [2]. - The strategy enables near-zero carbon dioxide emissions and high olefin selectivity, showcasing a "plug-and-play" advantage for broader applications [2]. Group 3: Future Directions - The team plans to further explore the industrial scaling and long-term stability of the halogen regulation strategy, aiming to promote its application in coal-to-liquid, natural gas conversion, and biomass utilization [2].

该研究不仅实现了低碳与高效的双重突破，还揭示了卤素在反应中的活化–调控机理，为理解铁基费托 催化剂的微观反应路径提供了重要理论依据。 中国科学院山西煤炭化学研究所发布消息，10月30日，该所温晓东研究员团队联合北京大学马丁教授团 队在《科学》杂志发表最新研究成果，首次在铁基费托合成催化剂上实现了二氧化碳选择性低于1%、 烯烃选择性超过85%的重大突破，为高碳资源的清洁高效利用提供了全新思路。 据悉，研究团队将继续探索卤素调控策略的工业放大与长期稳定性验证，推动其在煤制油、天然气转化 及生物质利用等领域的应用，助力我国煤化工产业向高效、低碳、绿色方向转型。 针对这一难题，研究团队结合表面化学势调控理论、自动化高通量实验，提出了一种痕量卤代烷烃共进 料调控策略。通过各种先进表征技术，他们发现在反应气中引入百万分之一级的卤代烷烃(如溴甲烷)， 就能在分子层面实现对表面氧物种循环的有效调节，从而动态调控催化剂表面的催化性能。 这一"分子手术式"策略无需改变催化剂配方，只需在反应体系中引入微量卤素，即可实现二氧化碳近零 排放与高烯烃选择性，具有即插即用的普适优势。 长期以来，工业烯烃主要来源于石油裂解，开发以煤炭、天然 ...