Catalytic conversion of carbon dioxide to methane on ruthenium-cobalt bimetallic nanocatalysts and correlation between surface chemistry of catalysts under reaction conditions and catalytic performances

Yuan Zhu, Shiran Zhang, Yingchun Ye, Xueqiang Zhang, Lei Wang, Wei Zhu, Feng Cheng, Franklin Tao*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

117 引用 (Scopus)

摘要

Catalytic conversion of CO 2 to CH 4 on cobalt oxide and Ru-doped cobalt oxide nanorods was studied with in-house ambient pressure X-ray photoelectron spectroscopy (AP-XPS) using monochromated Al Kα. A correlation between catalytic performances of the two catalysts and their surface chemistry under reaction conditions was built. Active phases of the two catalysts are metallic cobalt and bimetallic Co-Ru, respectively. Light-off temperature of Co-Ru catalyst is lower than that of a cobalt catalyst. Selectivity to production of CH 4 and activity on the Ru-doped cobalt oxide are obviously enhanced by formation of bimetallic Co-Ru ultrathin film in its surface region in contrast to that of cobalt catalyst in the temperature range of 200-340 °C.

源语言英语
页(从-至)2403-2408
页数6
期刊ACS Catalysis
2
11
DOI
出版状态已出版 - 2 11月 2012
已对外发布

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