摘要
由于钴基催化剂的活性组分为Co,反应中CO_2的生成量很少,水煤气变换反应可不予考虑,所以钴基催化剂上烃的生成为主要反应。在费托合成碳化物机理的基础上,建立了烃生成的可能基元反应,以生成碳化物的基元反应为控制步骤,推导出8个钴基催化剂上CO消耗的F-T合成本征动力学模型。模型揭示了钴基催化剂费托合成机理,为反应器的工业设计提供了一定的理论基础。
The activated phases were Co for the cobalt-based catalyst.The production of CO2 was trace,the reaction for the water gas shift was ignored.Formed hydrocarbon reaction was the main reaction of Fischer-Tropsch synthesis.Impossible elementary steps of the formed hydrocarbon were established on the base of the carbide mechanism.The elementary step of the carbide formation was the rate-controlling step.Eight intrinsic kinetics models of CO consumption were derived over the cobalt-based catalyst.The models display mechanism of Fischer-Tropsch synthesis and provide the basis for industry design of reactors.
基金
高等学校博士学科点专项科研基金(20050251006)
关键词
催化
F-T合成
本征动力学
钴基催化剂
catalysis
Fischer-Tropsch synthesis
intrinsic kinetics model
cobalt-based catalyst