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首页> 外文期刊>Journal of industrial and engineering chemistry >Kinetic study of Fischer-Tropsch process on titania-supported cobalt-manganese catalyst
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Kinetic study of Fischer-Tropsch process on titania-supported cobalt-manganese catalyst

机译：二氧化钛负载钴锰催化剂上费-托法的动力学研究

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An active cobalt-manganese catalyst was prepared by co-precipitation method, and was also tested for hydrogenation of carbon monoxide to light olefins. The catalyst was characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) surface area techniques. The kinetic experiments on a well-characterized Co-Mn/TiO2 catalyst were performed in a fixed-bed micro-reactor, and were also conducted in a temperature range of 190-280 °C, pressure range of 1-10 bar, H2/CO feed ratio (mol/mol) range of 1-3 and a space velocity range of 2700-5200 h~(-1). Two kinetic expressions based on Langmuir-Hinshelwood-Houngen-Watson (LHHW) mechanism were observed to fit the experimental data accurately for Fischer-Tropsch synthesis reaction. The kinetic parameters were estimated with non-linear regression method. Activation energies obtained were 35.131 and 44.613 kJ/mol for optimal kinetics models.
机译：通过共沉淀法制备了活性钴锰催化剂，并进行了将一氧化碳氢化为轻质烯烃的试验。使用X射线衍射（XRD），扫描电子显微镜（SEM）和Brunauer-Emmett-Teller（BET）表面积技术对催化剂进行了表征。在固定床微反应器上进行了表征良好的Co-Mn / TiO2催化剂的动力学实验，并且还在190-280°C的温度范围，1-10 bar的压力范围，H2 / CO进料比（mol / mol）为1-3，空速为2700-5200 h〜（-1）。观察到两个基于Langmuir-Hinshelwood-Houngen-Watson（LHHW）机理的动力学表达式，以准确拟合费托合成反应的实验数据。用非线性回归方法估算动力学参数。对于最佳动力学模型，获得的活化能为35.131和44.613 kJ / mol。

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