钴基费托合成催化剂影响因素的研究进展  

Recent progress of influencing factors for cobalt based Fischer-Tropsch synthesis

作　　者：蒋倩 刘岳峰[3] 王晨光 JIANG Qian;LIU Yuefeng;WANG Chenguang(Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China;CAS Key Laboratory of Renewable Energy,Guangzhou 510640,China;Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China)

机构地区：[1]中国科学院广州能源研究所,广东广州510640 [2]中国科学院可再生能源重点实验室,广东广州510640 [3]中国科学院大连化学物理研究所,辽宁大连116023

出　　处：《燃料化学学报（中英文）》2024年第12期1787-1797,共11页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(22308355);广州市科技计划(2023A04J0661)资助。

摘　　要：费托合成是将煤、天然气、生物质等碳源转化为燃料和高值化学品的重要手段。钴基催化剂由于具有较高的催化稳定性、较好的抗氧化能力、低水汽转化率以及高液相烃类选择性等被广泛的用于费托合成。为了进一步追求钴基催化剂的高质量比活性,并解析其活性的来源,世界各国研究学者做了大量的研究,采用各种表征手段,解析钴基催化剂的微观结构,并建立构-效关系。本工作分析总结了费托合成反应中钴基催化剂的粒径效应、晶相、载体效应、助剂效应以及特殊空间结构的研究进展,探讨催化剂的微结构与反应活性之间的关联,并对未来发展方向进行了展望。Fischer-Tropsch synthesis is an important approach to convert carbon source,such as coal,natural gas,biomass and so on,into synthetic fuels and value-added chemicals,i.e.lower olefins,gasoline,jet fuel,diesel and wax.Recently,Fischer-Tropsch synthesis recapture our attention under the international carbon neutrality context as an important carbon utilization route with high carbon utilization efficiency.Fe,Co,Ru are the main active metal for Fischer-Tropsch synthesis.Among which cobalt based Fischer-Tropsch synthesis catalysts have gained the interests both in industrial and academic area owing to the high stability,resistance to oxidation,low reverse water gas shift(RWGS)activity,high unbranched long-chain hydrocarbons selectivity and also the acceptable expense.To improve the mass specific activity and elucidate the origin for the catalytic activity,researcher have employed multiple techniques to explore the microstructure and construct the structureactivity relationship.Besides,considering that the chain growth via C-C coupling following the CH2 polymerization mechanism,the products selectivity is limited by the Anderson-Schulz-Flory(ASF)distribution with the theoretical value for C5-C11(gasoline),C8-C16(jet fuel)and C10-C20(diesel)is 48%,41%and 40%,respectively.Thus the regulation for products distribution for the selective formation of targeted product is one of the biggest challenges in Fischer-Tropsch synthesis.This review summarized the recent progress for several key influencing factors in cobalt based Fischer-Tropsch synthesis,i.e.particle size,crystal phase,support,promoter and special spatial structure.Besides,the prospects for the future research directions were given.The controllable synthesis of a catalytic system that coupled with a cobalt-based catalyst and a zeolite or a cobalt confined catalytic system to highly selectively control the products distribution is a future development direction.Moreover,issues arising from the scale-up of these catalytic systems in the industrial application,such a

关 键 词：费托合成 粒径效应 晶相 载体 助剂 特殊空间结构 

分 类 号：TQ028.8[化学工程]