贵金属助剂对费-托合成用钴基催化剂的促进作用

Effects of Noble Metal Promoters on Supported Cobalt-Based Fischer-Tropsch Catalysts

贵金属助剂促进的费-托合成用钴基催化剂具有高活性和长链烃(C5+)选择性优越等特点,被广泛应用于合成气制清洁燃料的合成反应中。本文重点讨论了贵金属助剂对活性钴物种的结构(还原度、分散度、双金属颗粒或合金的构成),钴基催化剂稳定性以及其对费-托合成的反应速率和产物选择性的影响规律。

Being of high activity and good selectivity in C5^＋ hydrocarbons, noble metal promoted cobalt FischerTropseh catalysts are widely utilized in carbon monoxide selective hydrogenation to clean fuels or long chain hydrocarbons. The effects of noble metal promoters on the structure of Co active species are reviewed and discussed in this paper, as well as the reducibility, dispersion, the formation of bimetallic particles or alloy, the behavior of deactivation and the influences on their catalytic performances.