山西煤化所联合北大发表最新研究成果

Core Insights - A significant breakthrough has been achieved in iron-based Fischer-Tropsch synthesis catalysts, achieving CO2 selectivity below 1% and olefin selectivity over 85%, providing a new approach for the clean and efficient utilization of high-carbon resources [1][2] Group 1: Research Findings - The research was conducted by a team from the Shanxi Coal Chemistry Research Institute of the Chinese Academy of Sciences and Professor Martin's team from Peking University, published in the journal Science [1] - Olefins, considered the "cornerstone of the chemical industry," are key raw materials for synthetic fibers, rubber, and plastics, traditionally sourced from petroleum cracking [1] - The study addresses the challenge of traditional iron-based catalysts that generate significant CO2, limiting carbon utilization efficiency and olefin selectivity [1][2] Group 2: Methodology - The research team proposed a trace halogenated alkane co-feeding strategy, utilizing advanced characterization techniques to effectively regulate the catalytic performance at the molecular level [2] - By introducing halogens in the reaction gas at the parts per million level, the team achieved near-zero CO2 emissions and high olefin selectivity without altering the catalyst formulation [2] - This "molecular surgery" strategy reveals the activation-regulation mechanism of halogens in the reaction, providing important theoretical insights into the microscopic reaction pathways of iron-based Fischer-Tropsch catalysts [2] Group 3: Future Directions - The team plans to 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]