CO Oxidation Activity of a Au/Ceria-Zirconia Catalyst Prepared by Deposition-Precipitation with Urea

被引：17

作者：

del Rio, Eloy ^{[1
]}

Blanco, Ginesa ^{[1
]}

Collins, Sebastian ^{[2
]}

Lopez Haro, Miguel ^{[1
]}

Chen, Xiaowei ^{[1
]}

Jose Delgado, Juan ^{[1
]}

Calvino, Jose J. ^{[1
]}

Bernal, Serafin ^{[1
]}

机构：

[1] Univ Cadiz, Fac Ciencias, Dept Ciencia Mat & Ingn Met & Quim Inorgan, Cadiz 11510, Spain

[2] CONICET UNL, Inst Desarrollo Tecnol Ind Quim INTEC, RA-3450 Guemes, Santa Fe, Argentina

来源：

TOPICS IN CATALYSIS | 2011年 / 54卷 / 13-15期

关键词：

Au/CeZrO2; Urea deposition/precipitation; Activation; CO oxidation; LOW-TEMPERATURE OXIDATION; PRETREATMENT CONDITIONS; OXIDE CATALYSTS; GOLD CATALYSTS; NANOPARTICLES; WATER; GAS; MECHANISM; TIO2; AU/CE1-XZRXO2;

D O I：

10.1007/s11244-011-9711-0

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The activation of a 2.6 wt% Au/Ce0.62Zr0.38O2 catalyst prepared by deposition-precipitation with urea is investigated. At 298 K, the activity for CO oxidation of the as-prepared sample is very low; it is significantly increased when heated at 418 K, under the reaction mixture, and much strongly when pre-treated under flowing O-2(5%)/He, at 523 K. As revealed by XPS, FTIRS, HAADF-STEM, and HRTEM studies, the activation process consists of the transformation of the initial urea-containing Au(III) precursor deposited on the support into a highly dispersed metal phase (Au nano-particle mean size: 1.8 nm).

引用

页码：931 / 940

页数：10

共 50 条

[1] CO Oxidation Activity of a Au/Ceria-Zirconia Catalyst Prepared by Deposition–Precipitation with Urea
Eloy del Río
Ginesa Blanco
Sebastián Collins
Miguel López Haro
Xiaowei Chen
Juan José Delgado
José J. Calvino
Serafin Bernal
Topics in Catalysis, 2011, 54
[2] Bimetallic Au-Ag/TiO2 catalyst prepared by deposition-precipitation: High activity and stability in CO oxidation
Sandoval, Alberto
Aguilar, Antonio
Louis, Catherine
Traverse, Agnes
Zanella, Rodolfo
JOURNAL OF CATALYSIS, 2011, 281 (01) : 40 - 49
[3] Improved activity and stability in CO oxidation of bimetallic Au-Cu/TiO2 catalysts prepared by deposition-precipitation with urea
Sandoval, Alberto
Louis, Catherine
Zanella, Rodolfo
APPLIED CATALYSIS B-ENVIRONMENTAL, 2013, 140 : 363 - 377
[4] Efficient CO Oxidation by Co/Ta2O5 Prepared by Deposition-Precipitation with Urea
Xia, Qing
Qin, Haijian
Xia, Feifei
Yao, Pengfei
Zheng, Chunzhi
Zhao, Songjian
Zhang, Huabing
Yang, Fengli
CATALYSIS LETTERS, 2024, 154 (07) : 3174 - 3183
[5] Au/ZnO and Au/ZnO-Fe2O3 Prepared by Deposition-Precipitation and Their Activity in the Preferential Oxidation of CO
Naknam, Pattarasuda
Luengnaruemitchai, Apanee
Wongkasemjit, Sujitra
ENERGY & FUELS, 2009, 23 (10) : 5084 - 5091
[6] Influence of Ce/Zr ratio on CO oxidation activity of ceria-zirconia supported Cu catalyst
Hattori, Masatomo
Haneda, Masaaki
Ozawa, Masakuni
JAPANESE JOURNAL OF APPLIED PHYSICS, 2016, 55 (01)
[7] Au-Ir/TiO2 Prepared by Deposition Precipitation with Urea: Improved Activity and Stability in CO Oxidation
Gomez-Cortes, Antonio
Diaz, Gabriela
Zanella, Rodolfo
Ramirez, Humberto
Santiago, Patricia
Saniger, Jose M.
JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (22): : 9710 - 9720
[8] Characterization and reactivity in CO oxidation of gold nanoparticles supported on TiO2 prepared by deposition-precipitation with NaOH and urea
Zanella, R
Giorgio, S
Shin, CH
Henry, CR
Louis, C
JOURNAL OF CATALYSIS, 2004, 222 (02) : 357 - 367
[9] Pd oxidation under UHV in a model Pd/ceria-zirconia catalyst
Smirnov, MY
Graham, GW
CATALYSIS LETTERS, 2001, 72 (1-2) : 39 - 44
[10] Catalytic Soot Oxidation: Effect of Ceria-Zirconia Catalyst Particle Size
Konstandopoulos, Athanasios G.
Pagkoura, Chrysoula
Lorentzou, Souzana
Kastrinaki, Georgia
SAE INTERNATIONAL JOURNAL OF ENGINES, 2016, 9 (03) : 1709 - 1719

← 1 2 3 4 5 →