氧化物助剂对费托合成钴基催化剂的促进作用

Effects of metal oxide promoters on supported cobalt-based Fischer-Tropsch catalysts

氧化物助剂促进的钴基催化剂具有费托合成反应活性和长链烃选择性高等特点,是高选择性地获得馏分油的关键,具有良好的应用和研究价值。本文针对氧化物助剂对钴基催化剂的促进作用,综述了氧化物助剂对钴基催化剂的结构、稳定性以及费托合成反应性能的影响,详细分析了氧化物助剂对钴基催化剂的还原性能和分散度的影响,同时介绍了影响氧化物助剂促进作用的因素,重点讨论了氧化物助剂的促进作用机理。并对如何更好地发挥氧化物助剂在钴基催化剂中的促进作用进行了展望:应加强氧化物助剂对钴基催化剂促进作用机理的基础研究,并且重视影响氧化物助剂促进作用的因素。

With high activity and long-chain hydrocarbon selectivity,metal oxide promoted cobalt-based Fischer-Tropsch catalysts are preferred in carbon monoxide selective hydrogenation to distillate oil with both application and research value.The effects of different metal oxide promoters on the structure,stability and Fischer-Tropsch reaction performance in metal oxide promoted cobalt-based catalyst are summarized.The promotion effects of different metal oxides on the reducibility and dispersion of cobalt-based catalysts are analyzed,and the influence factors on promotion effects are also discussed.The promotion mechanism is discussed in particular.Fundamental research on the metal oxide promotion mechanism should be strengthened,with more attention on the influence factors of promotion effects.