Low-temperature methanation of CO in coke oven gas using single nanosized Co₃O₄ catalysts

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• 作者：Hongwei Zhu ; Rauf Razzaq ; Li Jiang ; Chunshan Li ; ^{csli@home.ipe.ac.cn}
• 关键词：Co3O4 catalyst ; Nanosized materials ; CO methanation ; COG
• 刊名：Catalysis Communications
• 出版年：2012
• 期刊代码：12_15667367
• 类别：ce
• 出版时间：5 June, 2012
• 卷：23
• 期：Complete
• 页码：43-47
• 文件大小：790 K

摘要

Nanosized Co₃O₄ materials with different particle sizes (20, 40, and 80 nm) can be prepared through facile approaches. Nanosized Co₃O₄ materials were characterized using BET, XRD, TEM, XPS, CO-TPD and H₂-TPR. The activities of all the samples were tested in terms of percentage of CO conversion and CH₄ selectivity, when single nanosized Co₃O₄ materials were used as catalysts for the methanation of CO in coke oven gas. The results showed the activity of the 20 nm nanosized Co₃O₄ materials achieved 100%CO conversion at temperatures as low as 450 K at space velocity of 5000 h^鈭?#xA0;1, was much higher than that of larger particle size catalysts. The higher gas hourly space velocity had a negative effect on the catalytic activity.