费托合成反应机理研究进展  

Research progress of Fischer-Tropsch synthesis reaction mechanism

作　　者：苏俊超 刘勒 郝庆兰 刘星辰 滕波涛 SU Jun-chao;LIU Le;HAO Qing-lan;LIU Xing-chen;TENG Bo-tao(College of Chemical Engineering and Materials,Tianjin University of Science and Technology,Tianjin 300457,China;State Key Laboratory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,China)

机构地区：[1]天津科技大学化工与材料学院,天津300457 [2]中国科学院山西煤炭化学研究所煤转化国家重点实验室,山西太原030001

出　　处：《燃料化学学报（中英文）》2023年第11期1565-1575,共11页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(21872125)资助。

摘　　要：合成气(CO+H_(2))经费托合成(Fischer-Tropsch Synthesis,FTS)转化为清洁燃料与化学品是煤炭清洁利用与保障中国能源战略安全的重要途径。从分子水平深入研究费托合成反应机理,揭示合成气在催化剂表面活化,链增长为C_(n)H_(x)^(*)与C_(n)H_(x)O_(y)^(*)中间体,链终止为烷烃、烯烃、醇、酸产物的基元反应过程是实现费托合成目的产物调节、高性能催化剂理性设计与开发的重要基础,也是催化科学研究的热点与难点。为深入研究费托合成反应机理,科学家采用反应中间体检测、模型化合物添加、稳态机理动力学、稳态同位素瞬变动力学、第一性原理计算、反应网络等方法从不同的角度、不同层次揭示合成气转化机理。本综述总结了近百年来费托合成反应机理研究结果,提出了合理的反应机理路线图,并对反应机理研究进行了展望。Synthesis gas(CO+H_(2))conversion into clean fuels and chemicals through Fischer-Tropsch Synthesis(FTS)is an important way to clean utilization of coal and ensure China energy security.Investigation of FTS reaction mechanism at the molecular level,including of activation of synthesis gas on catalyst surface,the chain growth via C_(n)H_(x)^(*) and C_(n)H_(x)O_(y)^(*),as well as the chain termination into alkanes,olefins,alcohols,and acids,is the key to the regulation of FTS products,the rational design and development of high-performance catalysts.It is also a hot and difficult point in catalysis science.To study FTS reaction mechanism,intermediate detection,modeling compound addition,steady-state kinetics based on reaction mechanism,steady-state isotope transient kinetic analysis(SSITKA),first-principles calculations,and reaction networks,etc.have been applied to reveal the mechanism of synthesis gas conversion.This paper systematically summarizes the research results of reaction mechanism over the past century,proposes a reasonable route map for FTS reaction,and gives a prospection of the research on FTS mechanism.

关 键 词：费托合成 反应机理 CO加氢 铁基催化剂 

分 类 号：O643[理学—物理化学]