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首页> 外文期刊>Journal of industrial and engineering chemistry >Effects of preparation methods on the properties of cobalt/carbon catalyst for methane reforming with carbon dioxide to syngas
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Effects of preparation methods on the properties of cobalt/carbon catalyst for methane reforming with carbon dioxide to syngas

机译：制备方法对二氧化碳重整甲烷制合成气用钴/碳催化剂性能的影响

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摘要

The effect of different preparation methods on the physicochemical property, reforming reactivity, stability and carbon deposition resistance of cobalt/carbon catalyst was investigated through fixed bed flow reaction. The catalysts were prepared by the impregnation and characterized by the XRD and scanning electron microscopy (SEM). The result indicated that the active components of cobalt/ carbon catalyst prepared by using ultrasonic wave distributed evenly, activity was high and the loading time was short. The Co/Carbon catalyst prepared by incipient-wetness impregnation, 10 wt% loading and 300 °C calcination, achieved the best activity. Furthermore, the effect of reaction temperature, air speed and CH4/CO2 ratio on the catalyst activity and CO/H2 ratio in products was investigated. It was found that the conversion of CO2 and CH4 increased with the increasing of reaction temperature. However, the conversion of CO2 and CH4 increased first and then decreased with the increasing of air speed. With the increasing of CH4/CO2 in feed gas, both the catalyst activity and the CO/H2 ratio in products decreased.
机译：通过固定床流动反应研究了不同制备方法对钴/碳催化剂的理化性质，重整反应性，稳定性和抗碳沉积性的影响。通过浸渍制备催化剂，并通过XRD和扫描电子显微镜（SEM）表征。结果表明，采用超声波制备的钴/碳催化剂活性成分分布均匀，活性高，负载时间短。通过初湿浸渍，10 wt％负载和300°C煅烧制备的Co /碳催化剂达到了最佳活性。此外，研究了反应温度，风速和CH4 / CO2比对产物中催化剂活性和CO / H2比的影响。发现随着反应温度的升高，CO2和CH4的转化率增加。但是，随着空气速度的增加，CO2和CH4的转化率先升高，然后降低。随着原料气中CH4 / CO2含量的增加，催化剂的活性和产物中CO / H2的比值均下降。

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