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Study on the effect of alkali promoters on the formation of cobalt carbide (Co2C) and on the performance of Co2C via CO hydrogenation reaction

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Abstract

The present investigation deals with an alkali metal assisted synthesis of cobalt carbide (Co2C), starting from carburizing reduced complex precursors (obtained from Co3O4 with the addition of Li2O, Na2O and K2O) using CO as a carburization source. It is found that the Co2C formation could be significantly accelerated by the Li component. A comparative study reveals that the promotion effect of Li component may be related to the H2 adsorption on the reduced precursor, which enhanced the ability of the precursor to react with CO. Furthermore, the Co2C prepared from the precursor containing Li component shows a considerable increase in activity for CO hydrogenation and an improved fraction of higher alcohols in the total alcohol products, compared to the Co2C prepared without promoters. An attempt is made to elucidate the catalytic behavior of the as-prepared Co2C samples.

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Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (20973167).

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Authors and Affiliations

  1. Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, Liaoning, China

    Yanpeng Pei, Yunjie Ding, Hejun Zhu, Juan Zang, **angen Song, Wenda Dong, Tao Wang, Li Yan & Yuan Lu

  2. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023, Liaoning, China

    Yunjie Ding

  3. Graduate School of Chinese Academy of Science, Chinese Academy of Science, Bei**g, 100039, China

    Yanpeng Pei, Juan Zang, **angen Song & Wenda Dong

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  1. Yanpeng Pei
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  2. Yunjie Ding
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  4. Juan Zang
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  5. **angen Song
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  7. Tao Wang
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  8. Li Yan
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  9. Yuan Lu
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Correspondence to Yunjie Ding.

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Pei, Y., Ding, Y., Zhu, H. et al. Study on the effect of alkali promoters on the formation of cobalt carbide (Co2C) and on the performance of Co2C via CO hydrogenation reaction. Reac Kinet Mech Cat 111, 505–520 (2014). https://doi.org/10.1007/s11144-013-0663-1

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