Catalytic performance of La1-xRbxMnO3 perovskite in the simultaneous removal of NO and soot

LIU Xiao-gang; YAN Meng-xue; XU Ru-wen; SUN Jin-ru; WANG Hong; CHI Yao-ling; LI Cui-qing; SONG Yong-ji

Volume 47 Issue 9

Sep. 2019

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Article Navigation > Journal of Fuel Chemistry and Technology > 2019 > 47(9): 1146-1152

LIU Xiao-gang, YAN Meng-xue, XU Ru-wen, SUN Jin-ru, WANG Hong, CHI Yao-ling, LI Cui-qing, SONG Yong-ji. Catalytic performance of La1-xRbxMnO3 perovskite in the simultaneous removal of NO and soot[J]. Journal of Fuel Chemistry and Technology, 2019, 47(9): 1146-1152.

Citation:

LIU Xiao-gang, YAN Meng-xue, XU Ru-wen, SUN Jin-ru, WANG Hong, CHI Yao-ling, LI Cui-qing, SONG Yong-ji. Catalytic performance of La_1-xRb_xMnO₃ perovskite in the simultaneous removal of NO and soot[J]. Journal of Fuel Chemistry and Technology, 2019, 47(9): 1146-1152.

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Catalytic performance of La_1-xRb_xMnO₃ perovskite in the simultaneous removal of NO and soot

LIU Xiao-gang^{1, 2},
YAN Meng-xue¹,
XU Ru-wen¹,
SUN Jin-ru^{1, 2, 3},
WANG Hong^{1, 2
,
,},
CHI Yao-ling^{1, 2
,
,},
LI Cui-qing^{1, 2},
SONG Yong-ji^{1, 2}

1.
College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China
2.
Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, Beijing 102617, China
3.
College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China

Funds:

the National Natural Science Foundation of China U1662103

the National Natural Science Foundation of China 2167329

the Fuels Cleaning and Advanced Catalytic Emission Reduction Technology Program of Beijing Key Laboratory BZ041420180007

the National College Students Innovation and Entrepreneurship Training Program 2019J00100

More Information

Corresponding author: WANG Hong, E-mail: wanghong@bipt.edu.cn; CHI Yao-ling, E-mail: chiyaoling@bipt.edu.cn
Received Date: 2019-05-14
Rev Recd Date: 2019-07-10

Available Online: 2021-01-23

Publish Date: 2019-09-10

Abstract

Abstract

A series of La_1-xRb_xMnO₃ perovskite catalysts (x=0, 0.1, 0.2, 0.3) were prepared by solvothermal method and characterized by means of XRD, FT-IR, SEM, XPS and H₂-TPR; their catalytic performance in the simultaneous removal of NO and soot was investigated in a fixed-bed micro-reactor. The results show that the La_1-xRb_xMnO₃ catalysts have a single perovskite structure and the Mn species exist in the form of Mn³⁺ and Mn⁴⁺. In comparison with LaMnO₃, when La³⁺ is partially substituted by Rb⁺, more high-valence Mn⁴⁺ and oxygen vacancies are formed in La_1-xRb_xMnO₃, which can improve the redox properties and enhance the catalytic performance of La_1-xRb_xMnO₃. With the increase of Rb⁺ content in La_1-xRb_xMnO₃, the conversion of NO increases and the soot combustion temperature decreases. For NO and soot removal over La_0.7Rb_0.3MnO₃, x=0.3, the peak CO₂ formation temperature (t_max) is 430 ℃, with a selectivity of 99.0% to CO₂; at 429 ℃, the maximum conversion of NO reaches 59.7%.
- Mn-based perovskite,
- Rb,
- La,
- NO,
- soot

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References(28)

References

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