期刊
PLASMA PROCESSES AND POLYMERS
卷 19, 期 5, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppap.202100229
关键词
CO2 conversion; dielectric barrier discharge; plasma catalysis; synergistic effect
资金
- National Natural Science Foundation of China [11975069]
- Fundamental Research Funds for the Central Universities [DUT20GJ211]
- Liaoning Revitalization Talent Program [XLYC2008032]
This study reports a new real-time measurement method to more accurately evaluate the synergistic effect in plasma catalysis by measuring the axial temperature. The results show that compared to thermal catalysis, plasma catalysis only exhibits a weak synergistic effect. This finding contributes to the accurate assessment of plasma catalysis reactions.
Due to serious difficulty in the measurement of catalyst-bed temperature (T-b) for in-plasma catalysis (IPC), the evaluation of the IPC synergistic effect is still disputed. Herein, we reported a real-time measurement of axial temperature (T-ax), which is much closer to T-b than wall temperature (T-w), using a thermocouple in a catalyst-packed coaxial dielectric barrier discharge reactor for the first time. In plasma catalytic CO2 reduction, the effects of discharge power and flow rate on T-ax, T-w, and CO2 conversion were examined. On the basis of T-ax, compared with the thermal catalytic case, the plasma catalytic case only shows a weak synergistic effect. It was confirmed that the synergistic effect is overestimated if based on T-w (except for the heat-insulated or quasi-adiabatic reactors).
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