| Autor: |
Guo, Xiurong, Zhang, Haonan, Wang, Yinghui, Yang, Shaochi, Zhang, Yanlin, Sun, Chaowei, Du, Danfeng |
| Zdroj: |
Transactions of the Indian Institute of Metals; Feb2024, Vol. 77 Issue 2, p417-426, 10p |
| Abstrakt: |
There are detrimental effects of vehicle exhaust pollutants such as particulate matter (PM) and nitrogen oxides (NOx) on the environment and human health. In order to enhance the performance of woody LaCo0.7Fe0.3O3 perovskite-type catalysts for purifying PM and NOx, non-thermal plasma (NTP) generated by dielectric barrier discharge (DBD) was used as an assisted preparation method in this paper. The physicochemical properties of LaCo0.7Fe0.3O3 perovskite-type catalysts were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscope (SEM), and N2 adsorption–desorption. The LaCo0.7Fe0.3O3 perovskite-type catalysts prepared with and without NTP assisted method were tested and compared by a simulated test bench. The experimental results indicate that the purification efficiency of LaCo0.7Fe0.3O3 perovskite-type catalysts for PM and NOx with NTP assisted method is significantly higher than LaCo0.7Fe0.3O3 perovskite-type catalysts without NTP assisted method. When the input voltage and frequency are 15 kV and 10 kHz, the precursor of the catalyst sample is pretreated for 90 min, and the woody LaCo0.7Fe0.3O3 perovskite-type catalyst obtained shows the highest PM and NOx purification efficiency, within the range of approximately 96% and 50%, respectively. The PM and NOx purification mechanisms were deduced based on the experimental findings. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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