Study on copper-based oxygen carrier catalytic power plant flue gas deoxidation

SIMA Hao; WANG Xuefeng; DENG Cunbao

doi:10.1016/S1872-5813(23)60409-8

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SIMA Hao, WANG Xuefeng, DENG Cunbao. Study on copper-based oxygen carrier catalytic power plant flue gas deoxidation[J]. Journal of Fuel Chemistry and Technology. doi: 10.1016/S1872-5813(23)60409-8

Citation:

SIMA Hao, WANG Xuefeng, DENG Cunbao. Study on copper-based oxygen carrier catalytic power plant flue gas deoxidation[J]. Journal of Fuel Chemistry and Technology. doi: 10.1016/S1872-5813(23)60409-8

SIMA Hao, WANG Xuefeng, DENG Cunbao. Study on copper-based oxygen carrier catalytic power plant flue gas deoxidation[J]. Journal of Fuel Chemistry and Technology. doi: 10.1016/S1872-5813(23)60409-8

Citation:

SIMA Hao, WANG Xuefeng, DENG Cunbao. Study on copper-based oxygen carrier catalytic power plant flue gas deoxidation[J]. Journal of Fuel Chemistry and Technology. doi: 10.1016/S1872-5813(23)60409-8

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Study on copper-based oxygen carrier catalytic power plant flue gas deoxidation

doi: 10.1016/S1872-5813(23)60409-8

College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Funds: The project was supported by National Natural Science Foundation Joint fund project of China ( U1810206 ).

Received Date: 2023-12-06
Accepted Date: 2024-01-17
Rev Recd Date: 2024-01-16

Available Online: 2024-02-28

Abstract

Abstract

The main components of power plant flue gas are N₂, CO₂ and part O₂. Injecting power plant flue gas into mine goaf can achieve CO₂ storage and replace nitrogen injection to prevent spontaneous combustion of left coal. However, O₂ in flue gas is one of the factors causing spontaneous combustion of left coal. Therefore, it is urgent to develop an economical and effective catalyst to remove O₂ from power plant flue gas. In this study, four types of copper-based catalysts were prepared using a controllable modulating carrier and loading capacity through co-precipitation method. Additionally, a series of xCuO/CeO₂ catalystswere synthesized. The catalysts were characterized using BET analysis, XRD analysis, ICP analysis, TEM analysis, H₂-TPR and XPS analysis to establish a structure-activity relationship between catalyst structure and deoxidation performance for catalytic power plant flue gases. The results showed that the addition of CeO₂ improved the dispersion of CuO, increased the oxygen vacancy of the catalyst, and improved the activity and reduction oxidation performance of the catalyst. Moreover, the synergistic effect of Cu-Ce interface structure promoted the reduction oxidation process, showing good activity and cycle stability. Among xCuO/CeO₂ catalysts, 30CuO/CeO₂ showed the best catalytic deoxidation performance due to its smallest CuO particle size, highest dispersion and highest oxygen vacancy concentration. The results of this study provide a reference for the development of low cost, recyclable, high activity and high stability deoxidation catalysts.
- chemical-looping combustion,
- CuO/CeO₂,
- redox,
- interface structure,
- oxygen vacancies

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References(30)

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