材料科学技术(英文版)2022，Vol.111Issue(16) ：1-8.

Modulate the superficial structure of La2Ce2O7 catalyst with anchoring CuOx species for the selective catalytic oxidation of NH3

Xiangchen Kong Zhenguo Li Yuankai Shao Xiaoning Ren Kaixiang Li Hanming Wu Congjie Lv Cheng Lv Shengli Zhu
材料科学技术(英文版)2022，Vol.111Issue(16) ：1-8.
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Modulate the superficial structure of La2Ce2O7 catalyst with anchoring CuOx species for the selective catalytic oxidation of NH3

Xiangchen Kong 1Zhenguo Li 2Yuankai Shao 2Xiaoning Ren 2Kaixiang Li 2Hanming Wu 2Congjie Lv 2Cheng Lv 2Shengli Zhu3
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作者信息

  • 1. National Engineering Laboratory for Mobile Source Emission Control Technology,China Automotive Technology&Research Center Co.,Ltd.,Tianjin 300300,China;School of Materials Science and Engineering,Tianjin University,Tianjin 300350,China
  • 2. National Engineering Laboratory for Mobile Source Emission Control Technology,China Automotive Technology&Research Center Co.,Ltd.,Tianjin 300300,China
  • 3. School of Materials Science and Engineering,Tianjin University,Tianjin 300350,China;School of Materials Science and Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China
  • 折叠

Abstract

Air contamination caused by the ammonia slip phenomenon has gradually captured the researcher's ex-tensive attention.An effective strategy for controlling fugitive NH3 is critical to improving the air quality and living environment.In the present work,CuOx/La2Ce2O7 composite as a potential candidate catalyst is synthesized through the electrostatic adsorption method for the selective catalytic oxidation(SCO)of NH3 to N2.The 5％CuOx/La2Ce2O7 exhibits the best catalytic activity(T90=243℃)and ammonia con-version efficiency.The improvement of performance is mainly attributed to the superficial connection of[Ce-O-Cu],which enhances the capturing ability of ammonia molecule and accelerates the dissociating efficiency of N-H bonding for N2 evolution,simultaneously.This work provides a facile method to syn-thesis pyrochlore-like composite catalyst of NH3-SCO for solving the problem of ammonia slip pollution in the future.

Key words

La2Ce2O7 catalyst/Selective catalytic oxidation/CuOx species/Ammonia slip

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基金项目

国家自然科学基金(51771131)

Postdoctoral Re-search Foundation of China(2020M670676)

National Engi-neering Laboratory for Mobile Source Emission Control Technology(NELMS2019B01)

CATARC(Tianjin)Automotive Engineering Research Institute Youth Innovation Fund Project(S1921506)

Science and Technology Directorate Project of Tianjin City(19YFZCSF00960)

CATARC(Tianjin)Central Guide Project(21243409)

CATARC(Tianjin)Youth Science and Technology Tal-ents Project(21226303)

出版年

2022
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI
影响因子：0.657
ISSN：1005-0302
参考文献量45
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