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化工学报  2014 

CoCu/SiO2催化剂用于合成气直接制备低碳混合醇的动力学

DOI: 10.3969/j.issn.0438-1157.2014.01.018, PP. 143-151

Keywords: 动力学,一氧化碳,加氢,低碳醇,CoCu/SiO2,合成气

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Abstract:

由合成气直接制取低碳混合醇是洁净高效利用煤炭资源的最佳途径之一。通过浸渍法制备了CoCu/SiO2催化剂,采用固定床反应器,排除了内外扩散影响,在反应温度为503~543K,H2与CO的比值为4~0.5条件下,对合成气直接制取低碳混合醇反应进行了本征动力学研究。使用幂函数速率模型对反应结果进行了拟合,计算得出各产物的反应活化能以及对应的H2和CO的反应级数。最后结合碳链增长可能性的变化,讨论了不同温度对CoCu/SiO2催化剂催化合成气直接制备低碳醇反应机理的影响。

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