Highly Reducible Nanostructured CeO2 for CO Oxidation

被引：16

作者：

Feng, Gang ^{[1
]}

Han, Weining ^{[1
]}

Wang, Zhimiao ^{[1
]}

Li, Fang ^{[1
]}

Xue, Wei ^{[1
]}

机构：

[1] Hebei Univ Technol, Sch Chem Engn & Technol, Hebei Prov Key Lab Green Chem Technol & High Effi, Tianjin 300130, Peoples R China

来源：

CATALYSTS | 2018年 / 8卷 / 11期

关键词：

ceria; morphology; catalyst; CO oxidation; surface oxygen species; WATER-GAS SHIFT; CERIA NANOPARTICLES; CATALYTIC-ACTIVITY; NANOTUBES; PROPERTY; NANORODS;

D O I：

10.3390/catal8110535

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：

Ceria in nanoscale with different morphologies, rod, tube and cube, were prepared through a hydrothermal process. The structure, morphology and textural properties were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and isothermal N-2 adsorption-desorption. Ceria with different morphologies were evaluated as catalysts for CO oxidation. CeO2 nanorods showed superior activity to the others. When space velocity was 12,000 mL.gcat(-1).h(-1), the reaction temperature for 90% CO conversion (T-90) was 228 degrees C. The main reason for the high activity was the existence of large amounts of easily reducible oxygen species, with a reduction temperature of 217 degrees C on the surface of CeO2 nanorods. Another cause was their relatively large surface area.

引用

收藏

页数：10

相关论文

共 50 条

[31] Ir/CeO2 Catalysts: Characterization and Performance for CO Oxidation [J].

Hu Pan-Jing ;

Wu Yan-Ni ;

Zheng Hai-Ying ;

Meng Lian ;

Jin Ling-Yun ;

Luo Meng-Fei .

CHINESE JOURNAL OF INORGANIC CHEMISTRY, 2011, 27 (12) :2389-2394

[32] Interaction of Mn with reducible CeO2(111) thin films [J].

Ginting, Elfrida ;

Hu, Shanwei ;

Thorne, James E. ;

Zhou, Yinghui ;

Zhu, Junfa ;

Zhou, Jing .

APPLIED SURFACE SCIENCE, 2013, 283 :1-5

[33] High dispersed Pd supported on CeO2 (100) for CO oxidation at low temperature [J].

Zhang, Xia ;

Li, Wenzhi ;

Zhou, Zean ;

Chen, Kun ;

Wu, Mingwei ;

Yuan, Liang .

MOLECULAR CATALYSIS, 2021, 508

[34] Ionic Liquid-Assisted Sonochemical Preparation of CeO2 Nanoparticles for CO Oxidation [J].

Alammar, Tarek ;

Noei, Heshmat ;

Wang, Yuemin ;

Gruener, Wolfgang ;

Mudring, Anja-Verena .

ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2015, 3 (01) :42-54

[35] Relationship between hydrothermal temperatures and structural properties of CeO2 and enhanced catalytic activity of propene/toluene/CO oxidation by Au/CeO2 catalysts [J].

Eaimsumang, Srisin ;

Chollacoop, Nuwong ;

Luengnaruemitchai, Apanee ;

Taylor, Stuart H. .

FRONTIERS IN CHEMISTRY, 2022, 10

[36] Surface-structure effect of nano-crystalline CeO2 support on low temperature CO oxidation [J].

Li, Gengnan ;

Wu, Binghan ;

Li, Liang .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2016, 424 :304-310

[37] Influence of the preparation methods for Pt/CeO2 and Au/CeO2 catalysts in CO oxidation [J].

Shimada, Satoshi ;

Takei, Takashi ;

Akita, Tomoki ;

Takeda, Seiji ;

Haruta, Masatake .

SCIENTIFIC BASES FOR THE PREPARATION OF HETEROGENEOUS CATALYSTS: PROCEEDINGS OF THE 10TH INTERNATIONAL SYMPOSIUM, 2010, 175 :843-847

[38] Studies of the Catalytic Oxidation of CO Over Ag/CeO2 Catalyst [J].

Kang, Yan ;

Sun, Min ;

Li, Aimin .

CATALYSIS LETTERS, 2012, 142 (12) :1498-1504

[39] CeO2/YSZ Nanocomposite Powders: Reactivity Towards CO Oxidation [J].

Natile, Marta Maria ;

Glisenti, Antonella .

NANOSCIENCE AND NANOTECHNOLOGY LETTERS, 2009, 1 (02) :73-76

[40] Mechanisms of CO oxidation reaction and effect of chlorine ions on the CO oxidation reaction over Pt/CeO2 and Pt/CeO2/γ-Al2O3 catalysts [J].

Oran, U ;

Uner, D .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2004, 54 (03) :183-191

← 1 2 3 4 5 →