采用等体积分步浸渍法制备了费托合成用Co/ZrO2/SiO2催化剂,并用XRD,TPR和N2-吸附等手段对催化剂进行了表征.考察了催化剂在费托反应过程中的结构变化和失活行为.结果表明,反应过程中硅酸钴物种的生成是催化剂失活的主要原因,且硅酸钴的生成与产物水的分压有关;晶粒长大也可能是催化剂失活的原因之一.
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