Comparative Study of Moisture-Treated Pd@CeO2/Al2O3 and Pd/CeO2/Al2O3 Catalysts for Automobile Exhaust Emission Reactions: Effect of Core-Shell Interface

被引：63
作者：
Li, Lingcong [1 ,2 ]
Zhang, Ningqiang [1 ,2 ,3 ]
Wu, Rui [1 ,2 ]
Song, Liyun [1 ,2 ]
Zhang, Guizhen [1 ,2 ]
He, Hong [1 ,2 ,4 ]
机构：
[1] Beijing Univ Technol, Key Lab Beijing Reg Air Pollut Control, Beijing 100124, Peoples R China
[2] Beijing Univ Technol, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
[3] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
[4] Collaborat Innovat Ctr Elect Vehicles Beijing, Beijing 100081, Peoples R China
来源：
ACS APPLIED MATERIALS & INTERFACES | 2020年 / 12卷 / 09期
关键词：
Pd@CeO2/Al2O3; three-way catalyst; moisture; core-shell interface; hydroperoxyl group; METHANE COMBUSTION; N2O FORMATION; NO REDUCTION; TEMPERATURE; OXIDATION; STABILITY; MECHANISM; PERFORMANCE; NANOPARTICLES; PROPANE;
D O I：
10.1021/acsami.9b20734
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this article, moisture-treated Pd@CeO2/Al2O3 and Pd/CeO2/Al2O3 catalysts were synthesized and applied in automotive three-way catalytic (TWC) reactions. Compared to the Pd/CeO2/Al2O3 catalyst, the Pd@CeO2/Al2O3 core-shell catalyst had better TWC activities. Transmission electron microscopy (TEM) images and X-ray photoelectron spectra (XPS) showed excess PdO2 on the Pd and CeO2 interface of Pd@CeO2 nanoparticles. Fourier transform infrared (FT-IR) spectra analysis demonstrated the generation of the hydroperoxyl (*OOH) groups on the surface of the Pd@CeO2 nanoparticle. CO-diffuse reflectance Fourier transform (DRIFT) measurement suggested that the CO adsorbed on *OOH species contributed to the formation of CO2 and intermediate *COOH. NO-DRIFT results showed that more *NO2 species appeared on the moisture-treated Pd@CeO2 nanoparticle, which was the main active site in the automobile TWC reaction. These were the main factors contributing to the moisture-treated Pd@CeO2/Al2O3 catalyst's high catalytic activities. The collected data revealed the crucial role of the co-promoting effect of moisture and core-shell interface on TWC reactions over the Pd@CeO2/Al2O3 catalyst, which could be applied to other catalytic reactions.
引用
收藏
页码：10350 / 10358
页数：9
相关论文
共 60 条
[1]   Synthesis and Stability of Pd@CeO2 Core-Shell Catalyst Films in Solid Oxide Fuel Cell Anodes [J].
Adijanto, Lawrence ;
Sampath, Anirudh ;
Yu, Anthony S. ;
Cargnello, Matteo ;
Fornasiero, Paolo ;
Gorte, Raymond J. ;
Vohs, John M. .
ACS CATALYSIS, 2013, 3 (08) :1801-1809
[2]   Exceptional Thermal Stability of Pd@CeO2 Core-Shell Catalyst Nanostructures Grafted onto an Oxide Surface [J].
Adijanto, Lawrence ;
Bennett, David A. ;
Chen, Chen ;
Yu, Anthony S. ;
Cargnello, Matteo ;
Fornasiero, Paolo ;
Gorte, Raymond J. ;
Vohs, John M. .
NANO LETTERS, 2013, 13 (05) :2252-2257
[3]   Synthesis, characterization and performance of Pd-based core-shell methane oxidation nano-catalysts [J].
Ali, Sardar ;
Al-Marri, Mohammed J. ;
Al-Jaber, Amina S. ;
Abdelmoneim, Ahmed G. ;
Khader, Mahmoud M. .
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING, 2018, 55 :625-633
[4]   A comparison of hierarchical Pt@CeO2/Si-Al2O3 and Pd@CeO2/Si-Al2O3 [J].
Arroyo-Ramirez, Lisandra ;
Chen, Chen ;
Cargnello, Matteo ;
Murray, Christopher B. ;
Gorte, Raymond J. .
CATALYSIS TODAY, 2015, 253 :137-141
[5]   Improved activity and stability of Pd@CeO2 core-shell catalysts hybridized with multi-walled carbon nanotubes in the water gas shift reaction [J].
Beltram, A. ;
Melchionna, M. ;
Montini, T. ;
Nasi, L. ;
Gorte, R. J. ;
Prato, M. ;
Fornasiero, P. .
CATALYSIS TODAY, 2015, 253 :142-148
[6]   Low-Temperature CO Oxidation over a Ternary Oxide Catalyst with High Resistance to Hydrocarbon Inhibition [J].
Binder, Andrew J. ;
Toops, Todd J. ;
Unocic, Raymond R. ;
Parks, James E., II ;
Dai, Sheng .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2015, 54 (45) :13263-13267
[7]   Oxidation of Au by Surface OH: Nucleation and Electronic Structure of Gold on Hydroxylated MgO(001) [J].
Brown, Matthew A. ;
Fujimori, Yuichi ;
Ringleb, Franziska ;
Shao, Xiang ;
Stavale, Fernando ;
Nilius, Niklas ;
Sterrer, Martin ;
Freund, Hans-Joachim .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (27) :10668-10676
[8]   Maximum Noble-Metal Efficiency in Catalytic Materials: Atomically Dispersed Surface Platinum [J].
Bruix, Albert ;
Lykhach, Yaroslava ;
Matolinova, Iva ;
Neitzel, Armin ;
Skala, Tomas ;
Tsud, Nataliya ;
Vorokhta, Mykhailo ;
Stetsovych, Vitalii ;
Sevcikova, Klara ;
Myslivecek, Josef ;
Fiala, Roman ;
Vaclavu, Michal ;
Prince, Kevin C. ;
Bruyere, Stephanie ;
Potin, Valerie ;
Illas, Francesc ;
Matolin, Vladimir ;
Libuda, Joerg ;
Neyman, Konstantin M. .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2014, 53 (39) :10525-10530
[9]   The activity and mechanism study of Fe-Mn-Ce/γ-Al2O3 catalyst for low temperature selective catalytic reduction of NO with NH3 [J].
Cao, Fan ;
Su, Sheng ;
Xiang, Jun ;
Wang, Pengying ;
Hu, Song ;
Sun, Lushi ;
Zhang, Anchao .
FUEL, 2015, 139 :232-239
[10]  
Cargnello M, 2012, SCIENCE, V337, P713, DOI [10.1126/science.1222887, 10.1126/science.1223488]
123456