Catalytic Oxidation of Trichloroethylene over RuO2 Supported on Ceria-zirconia Mixed Oxide

doi:10.1007/s40242-019-8222-6

高等学校化学研究 ›› 2019, Vol. 35 ›› Issue (1): 71-78.doi: 10.1007/s40242-019-8222-6

Catalytic Oxidation of Trichloroethylene over RuO₂ Supported on Ceria-zirconia Mixed Oxide

LU Lulu¹, WANG Chan¹, WANG Mei², SONG Qijun¹

Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China

收稿日期:2018-07-06 修回日期:2018-11-23 出版日期:2019-02-01 发布日期:2018-12-05
通讯作者: SONG Qijun E-mail:qsong@jiangnan.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China(No.51502115) and the Fundamental Research Funds for the Central Universities of China(No.JUSRP11708).

Catalytic Oxidation of Trichloroethylene over RuO₂ Supported on Ceria-zirconia Mixed Oxide

LU Lulu¹, WANG Chan¹, WANG Mei², SONG Qijun¹

Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China

Received:2018-07-06 Revised:2018-11-23 Online:2019-02-01 Published:2018-12-05
Contact: SONG Qijun E-mail:qsong@jiangnan.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(No.51502115) and the Fundamental Research Funds for the Central Universities of China(No.JUSRP11708).

摘要/Abstract

摘要： Ru/Ce-Zr catalysts were prepared by impregnation of Ru on the hydrothermally synthesized Ce-Zr mixed oxide with different molar ratio of Ce/Zr. The resultant products were systematically characterized by inductively coupled plasma (ICP), X-ray diffraction (XRD), scanning electron microscopy (SEM)/energy dispersive spectrometry (EDS), H₂-temperature programmed reduction (H₂-TPR), NH₃-temperature programmed desorption (NH₃-TPD) and X-ray photoelectron spectroscopy (XPS). It was proved by H₂-TPR and NH₃-TPD that the introduction of Ru can improve the activity of oxygen of catalysts and the presence of Zr contributes to the increments of acid properties of catalysts. When the molar ratio of Ce-Zr was 8:4, the quantity of Ru was 0.9% (mass ratio), and the calcined temperature of catalysts was at 400℃, the removal rate of 90% for trichloroethylene (TCE) was reached at 250℃ for 5360 mg/m³ TCE and the stability of the catalysts was investigated under the condition. The results showed that the high removal rate can be maintained for at least 90 h, which is promising for industrial application.

关键词: Catalytic oxidation, Trichloroethylene, RuO₂, Ceria-zirconia mixed oxide

Abstract: Ru/Ce-Zr catalysts were prepared by impregnation of Ru on the hydrothermally synthesized Ce-Zr mixed oxide with different molar ratio of Ce/Zr. The resultant products were systematically characterized by inductively coupled plasma (ICP), X-ray diffraction (XRD), scanning electron microscopy (SEM)/energy dispersive spectrometry (EDS), H₂-temperature programmed reduction (H₂-TPR), NH₃-temperature programmed desorption (NH₃-TPD) and X-ray photoelectron spectroscopy (XPS). It was proved by H₂-TPR and NH₃-TPD that the introduction of Ru can improve the activity of oxygen of catalysts and the presence of Zr contributes to the increments of acid properties of catalysts. When the molar ratio of Ce-Zr was 8:4, the quantity of Ru was 0.9% (mass ratio), and the calcined temperature of catalysts was at 400℃, the removal rate of 90% for trichloroethylene (TCE) was reached at 250℃ for 5360 mg/m³ TCE and the stability of the catalysts was investigated under the condition. The results showed that the high removal rate can be maintained for at least 90 h, which is promising for industrial application.

Key words: Catalytic oxidation, Trichloroethylene, RuO₂, Ceria-zirconia mixed oxide

LU Lulu, WANG Chan, WANG Mei, SONG Qijun. Catalytic Oxidation of Trichloroethylene over RuO₂ Supported on Ceria-zirconia Mixed Oxide[J]. 高等学校化学研究, 2019, 35(1): 71-78.

LU Lulu, WANG Chan, WANG Mei, SONG Qijun. Catalytic Oxidation of Trichloroethylene over RuO₂ Supported on Ceria-zirconia Mixed Oxide[J]. Chemical Research in Chinese Universities, 2019, 35(1): 71-78.

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Catalytic Oxidation of Trichloroethylene over RuO₂ Supported on Ceria-zirconia Mixed Oxide

Catalytic Oxidation of Trichloroethylene over RuO₂ Supported on Ceria-zirconia Mixed Oxide

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