Effect of metal promoters on catalytic performance of Co/AC for higher alcohols synthesis from syngas

GUO Lei; LIU Pei-gong; GONG Kun; QI Xing-zhen; LIN Tie-jun

doi:10.1016/S1872-5813(23)60368-8

Volume 51 Issue 11

Nov. 2023

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Article Navigation > Journal of Fuel Chemistry and Technology > 2023 > 51(11): 1663-1672

GUO Lei, LIU Pei-gong, GONG Kun, QI Xing-zhen, LIN Tie-jun. Effect of metal promoters on catalytic performance of Co/AC for higher alcohols synthesis from syngas[J]. Journal of Fuel Chemistry and Technology, 2023, 51(11): 1663-1672. doi: 10.1016/S1872-5813(23)60368-8

Citation:

GUO Lei, LIU Pei-gong, GONG Kun, QI Xing-zhen, LIN Tie-jun. Effect of metal promoters on catalytic performance of Co/AC for higher alcohols synthesis from syngas[J]. Journal of Fuel Chemistry and Technology, 2023, 51(11): 1663-1672. doi: 10.1016/S1872-5813(23)60368-8

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Effect of metal promoters on catalytic performance of Co/AC for higher alcohols synthesis from syngas

doi: 10.1016/S1872-5813(23)60368-8

GUO Lei^1
,,
LIU Pei-gong^1
,,
GONG Kun^{2, 3
,},
QI Xing-zhen^{2, 3
,},
LIN Tie-jun^{1, 2
,
,}

1.
School of Physical Science and Technology, ShanghaiTech University, Shanghai201210, China
2.
CAS Key Laboratory of Low -Carbon Conversion Science andEngineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
3.
University of Chinese Academy of Sciences, Beijing100049, China

Funds: The project was supported by Natural Science Foundation of China (22072177), Natural Science Foundation of Shanghai (21ZR1471700) and Shanghai Youth Science and Technology Talents Sailing Program (21YF1453600)

More Information

Corresponding author: E-mail: lintj@sari.ac.cn
Received Date: 2023-02-10
Accepted Date: 2023-04-25
Rev Recd Date: 2023-03-19

Available Online: 2023-05-06

Publish Date: 2023-11-13

Abstract

Abstract

Shifting products of Fischer-Tropsch Synthesis (FTS) from paraffins to value-added higher alcohols receives great attention but remains great challenge. Herein, metal oxides of Mn, Zn, La and Zr are investigated as promoters to tune the activity and product distributions of Co/AC catalyst for syngas conversion. It is found that these promoters show different promotion effect on CO dissociation rate, the formation of Co₂C phase and the alcohols selectivity. The formed Co₂C/Co⁰ constitutes the dual active site for higher alcohols synthesis. The strongest CO dissociation rate is observed for Zn-promoted Co/AC catalyst, resulting in the highest activity and space-time yield (STY) of alcohols. The Mn promoter is most conducive to the formation of Co₂C, but slightly decreases the activity. The similar CO dissociation rate and CO conversion are obtained over both Zr- and La-promoted Co/AC catalysts, but the Zr-promoted Co/AC catalyst exhibits the highest alcohols selectivity due to the function balance between CO non-dissociative insertion and CO dissociation.
- syngas,
- higher alcohols,
- CO hydrogenation,
- promoter,
- cobalt carbide

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References(30)

References

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