Comparative study on properties of Pd-Ce-Zr catalysts synthesized by flame spray pyrolysis and solution combustion: Application for methane catalytic oxidation in electric field

被引：10

作者：

Zhao, Xuteng ^{[1
]}

Wang, Yinan ^{[1
]}

Zheng, Zuwei ^{[1
]}

Zhang, Yiran ^{[1
]}

Li, Ke ^{[2
,3
]}

Chen, Ting ^{[1
]}

Guo, Dongdong ^{[4
,5
]}

Cao, Honglin ^{[4
]}

Zhan, Reggie ^{[1
]}

Lin, He ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Key Lab Power Machinery & Engn, Minist Educ, Shanghai, Peoples R China

[2] Shanghai Marine Diesel Engine Res Inst, Shanghai 200090, Peoples R China

[3] Natl Engn Lab Marine & Ocean Engn Power Syst, Shanghai 200090, Peoples R China

[4] Beijing Vehicle Emiss Management Ctr, Beijing 100081, Peoples R China

[5] Beijing Inst Technol, Natl Lab Automot Performance & Emiss Test, Beijing 100081, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2021年 / 566卷

基金：

中国国家自然科学基金;

关键词：

Electric field; Flame spray pyrolysis; Solution combustion; Low concentration methane; Pd-Ce-Zr hollow nanospheres; MIXED-OXIDE; ETHANOL;

D O I：

10.1016/j.apsusc.2021.150536

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A kind of Pd0.01Ce0.75Zr0.25O2 hollow nanospheres surrounded by small nanoparticles prepared by flame spray pyrolysis (FSP) method (Pd0.01Ce0.75Zr0.25O2-F) were used for methane oxidation in electric field. Compared with the samples synthesized by solution combustion method, more Pd active sites is exposed to Pd0.01Ce0.75Zr0.25O2-F catalyst surface and it shows higher redox performance. The methane conversion over Pd0.01Ce0.75Zr0.25O2-F is higher (T-50 = 320 degrees C in 5 mA electric field, GHSV = 50,000 mTg(-1) M-1), and the turnover frequency (TOF) is significantly increased (Delta TOF = 4.33 x 10(-4) x s(-1)) under the effect of electric field. There is a strong interaction between electric field and Ce-Zr metastable structure, which is due to the higher content of surface hydroxyl groups on Pd0.01Ce0.75Zr0.25O2-F surface.

引用

页数：9

共 5 条

[1] Electric field promoted ultra-lean methane oxidation over Pd-Ce-Zr catalysts at low temperature
Li, Ke
Liu, Ke
Ni, Hong
Guan, Bin
Zhan, Reggie
Huang, Zhen
Lin, He
MOLECULAR CATALYSIS, 2018, 459 : 78 - 88
[2] Pd Single-Atom Loaded Ce-Zr Solid Solution Catalysts Prepared by Flame Spray Pyrolysis for Efficient CO Catalytic Oxidation
Zheng, Yaru
Zhang, Ling
Jiang, Hao
Li, Chunzhong
Hu, Yanjie
SMALL, 2024, 20 (28)
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Wu L.
Wang Y.
Chen Z.
Tian Q.
Wang L.
Fu Z.
Zhao N.
Wang X.
Huang X.
Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology, 2024, 52 (05): : 725 - 734
[4] A comparative study of Pt/CeO2 catalysts for catalytic partial oxidation of methane to syngas for application in fuel cell electric vehicles
Pino, L
Vita, A
Cordaro, M
Recupero, V
Hegde, MS
APPLIED CATALYSIS A-GENERAL, 2003, 243 (01) : 135 - 146
[5] Study of the methane combustion and TPR/TPO properties of Pd/Ce-Zr-M/Al2O3 catalysts with M = Mg, Ca, Sr, Ba
Yue, BH
Zhou, RX
Wang, YJ
Zheng, XM
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2005, 238 (1-2) : 241 - 249

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