Study on simultaneous removal of NO and soot by Fe-doped La0.9Sr0.1Co1-<italic style="font-style: italic">x</italic>Fe<italic style="font-style: italic">x</italic>O3 catalyst

WEI Wei; QIAO Zhiwei; LI Shuhua; MIAO Menghan; LIANG Hong; PENG Feng

doi:10.11949/0438-1157.20190851

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Study on simultaneous removal of NO and soot by Fe-doped La_0.9Sr_0.1Co_1-_xFe_xO₃ catalyst

Catalysis\, kinetics and reactors | 更新时间：2026-07-24

- Study on simultaneous removal of NO and soot by Fe-doped La_0.9Sr_0.1Co_1-_xFe_xO₃ catalyst
- CIESC Journal Vol. 70, Issue 12, Pages: 4654-4663(2019)
- 作者机构：
  
  广州大学化学化工学院，能源与催化研究所，广东广州 510006
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20190851
  CLC： TQ 132.3⁺3;TQ 138.1⁺1
- Received：24 July 2019，
  
  Revised：2019-10-07，
  
  Online First：09 June 2020，
  
  Published：05 December 2019
- 稿件说明：
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魏炜, 乔智威, 李树华, 苗梦涵, 梁红, 彭峰. Fe掺杂对La_0.9Sr_0.1Co_1-, , _x, Fe, _x, O₃催化剂同时净化NO和碳烟活性规律研究[J]. 化工学报, 2019, 70(12): 4654-4663 DOI: 10.11949/0438-1157.20190851.

WEI Wei, QIAO Zhiwei, LI Shuhua, MIAO Menghan, LIANG Hong, PENG Feng. Study on simultaneous removal of NO and soot by Fe-doped La_0.9Sr_0.1Co_1-, , _x, Fe, _x, O₃catalyst[J]. CIESC Journal, 2019, 70(12): 4654-4663 DOI: 10.11949/0438-1157.20190851.
魏炜, 乔智威, 李树华, 苗梦涵, 梁红, 彭峰. Fe掺杂对La_0.9Sr_0.1Co_1-, , _x, Fe, _x, O₃催化剂同时净化NO和碳烟活性规律研究[J]. 化工学报, 2019, 70(12): 4654-4663 DOI: 10.11949/0438-1157.20190851. DOI：

WEI Wei, QIAO Zhiwei, LI Shuhua, MIAO Menghan, LIANG Hong, PENG Feng. Study on simultaneous removal of NO and soot by Fe-doped La_0.9Sr_0.1Co_1-, , _x, Fe, _x, O₃catalyst[J]. CIESC Journal, 2019, 70(12): 4654-4663 DOI: 10.11949/0438-1157.20190851. DOI：

摘要

采用柠檬酸-EDTA络合法制备了纳米钙钛矿催化剂La

0.9

0.1

，催化剂具有较好的同时去除NO和碳烟(soot)催化活性，其中La

0.9

0.1

0.7

0.3

展现出最佳的催化活性，其在380.0℃时NO转化率为32.5%，soot最大燃烧速率温度(

)为368.5℃。H

-程序升温还原(H

-TPR)和NO-程序升温脱附(NO-TPD)结果表明， Fe掺杂能显著提高催化剂低温还原性能、表面氧物种活性及NO吸附性能，这有利于其改善催化活性。X射线光电子能谱(XPS)结果表明，Fe掺杂能增加催化剂表面吸附氧浓度和高价离子(Co

)，这对提高催化氧化能力至关重要。采用颗粒物捕集器(DPF)作为载体涂覆CeO

涂层用于负载La

0.9

0.1

0.7

0.3

催化剂进行柴油机台架实验，结果表明该催化剂具有较好的同时去除NO

和soot催化活性，最大NO转化率为23.0%，

为341.0℃，表明Fe掺杂对提高催化活性至关重要。

Abstract

The nano-perovskite catalyst La

0.9

0.1

was prepared by citric acid-EDTA complex method. The catalysts exhibit excellent catalytic activities for the simultaneous removal of NO and soot. Among them

the La

0.9

0.1

0.7

0.3

exhibits the best catalytic activity and wide activity window. The maximum NO conversion is 32.5% at 380.0℃

and the maximum soot combustion rate (

) is 368.5℃. The results of H

-TPR and NO-TPD indicate that the Fe-doping can significantly improve the reduction performance at the low temperature

surface oxygen species activity and NO adsorption performance of catalyst

leading to the enhancement of the catalytic activity. The XPS results show a strong interaction between Co and Fe. With increasing of Fe-doping

the surface adsorbed oxygen concentration and (Co

) content could increase on the surface catalyst

it is essential to improve the catalytic oxidation ability. Based on the previous works

the commercial DPF carrier is used to coating the CeO

coat

and the La

0.9

0.1

0.7

0.3

catalyst is further loaded to carry out the actual diesel engine bench test. The results show that the catalyst has good catalytic activity for simultaneous removal of NO

and soot. The best NO conversion can reach 23.0%

and the

was 341.0℃

indicating that the Fe-doping in the nano-perovskite catalysts can effectively improve the catalytic activity. It is expected that this study will provide strong theoretical support for the design and development of future four-way exhaust catalysts.

关键词

Keywords

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⁰

Study on simultaneous removal of NO and soot by Fe-doped La0.9Sr0.1Co1-xFexO3 catalyst

DOI：10.11949/0438-1157.20190851

摘要

Abstract

关键词

Keywords

references

Study on simultaneous removal of NO and soot by Fe-doped La_0.9Sr_0.1Co_1-_xFe_xO₃ catalyst