Effect of Cobalt on the Activity of CuO/CeO2 Catalyst for the Selective Oxidation of CO

被引：19

作者：

Lendzion-Bielun, Z. ^{[1
]}

Bettahar, M. M. ^{[2
]}

Monteverdi, S. ^{[2
]}

Moszynski, D. ^{[1
]}

Narkiewicz, U. ^{[1
]}

机构：

[1] W Pomeranian Univ Technol, Inst Chem & Environm Engn, PL-70322 Szczecin, Poland

[2] Univ Henri Poincare, UMR 7565, Fac Sci, Nancy IBP 239, F-54506 Vandoeuvre Les Nancy, France

来源：

CATALYSIS LETTERS | 2010年 / 134卷 / 3-4期

关键词：

Cobalt oxide; Copper oxide; Ceria; CO oxidation; RAY PHOTOELECTRON-SPECTROSCOPY; PREFERENTIAL OXIDATION; AU/MGO CATALYSTS; PROMOTED COBALT; OXIDE CATALYSTS; EXCESS; XPS; TEMPERATURE; KINETICS; TITANIA;

D O I：

10.1007/s10562-009-0257-8

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：

In this work effect of cobalt on catalyst CuO/CeO2 activity in selective CO oxidation in H-2-containing gases mixture was investigated. Catalysts were prepared by wet impregnation and calcination at 673 K, characterized by ICP, H-2-TPR, XRD, TEM, BET and XPS. The addition of cobalt to Cu/CeO2 catalyst improved the catalytic activity and selectivity for CO oxidation. Discussion of the results showed that the synergistic effect is correlated to better dispersion and reducibility of copper in the presence of the cobalt metal additive. More precisely, cobalt enhanced the segregation of copper phase towards the catalyst surface and copper enhanced CO oxidation at the expense of H-2 combustion.

引用

页码：196 / 203

页数：8

共 33 条

[1] Structure sensitivity of selective CO oxidation over Pt/γ-Al2O3 [J].

Atalik, B. ;

Uner, D. .

JOURNAL OF CATALYSIS, 2006, 241 (02) :268-275

[2] Catalytic performance and characterization of Au/doped-ceria catalysts for the preferential CO oxidation reaction [J].

Avgouropoulos, G. ;

Manzoli, M. ;

Boccuzzi, F. ;

Tabakova, T. ;

Papavasiliou, J. ;

Ioannides, T. ;

Idakiev, V. .

JOURNAL OF CATALYSIS, 2008, 256 (02) :237-247

[3] A comparative study of Pt/γ-Al2O3, Au/α-Fe2O3 and CuO-CeO2 catalysts for the selective oxidation of carbon monoxide in excess hydrogen [J].

Avgouropoulos, G ;

Ioannides, T ;

Papadopoulou, C ;

Batista, J ;

Hocevar, S ;

Matralis, HK .

CATALYSIS TODAY, 2002, 75 (1-4) :157-167

[4] On the role of redox properties of CuO/CeO2 catalysts in the preferential oxidation of CO in H2-rich gases [J].

Caputo, Tiziana ;

Lisi, Luciana ;

Pirone, Raffaele ;

Russo, Gennaro .

APPLIED CATALYSIS A-GENERAL, 2008, 348 (01) :42-53

[5] Kinetics of the preferential oxidation of CO over CuO/CeO2 catalysts in H2-rich gases [J].

Caputo, Tiziana ;

Lisi, Luciana ;

Pirone, Raffaele ;

Russo, Gennaro .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2007, 46 (21) :6793-6800

[6] Cobalt species in promoted cobalt alumina-supported Fischer-Tropsch catalysts [J].

Chu, Wei ;

Chernavskii, Petr A. ;

Gengembre, Leon ;

Pankina, Galina A. ;

Fongarland, Pascal ;

Khodakov, Andrei Y. .

JOURNAL OF CATALYSIS, 2007, 252 (02) :215-230

[7] Correlation of relative X-ray photoelectron spectroscopy shake-up intensity with CuO particle size [J].

Chusuei, CC ;

Brookshier, MA ;

Goodman, DW .

LANGMUIR, 1999, 15 (08) :2806-2808

[8] Calcination temperature and CuO loading dependence on CuO-CeO2 catalyst activity for water-gas shift reaction [J].

Djinovic, Petar ;

Batista, Jurka ;

Pintar, Albin .

APPLIED CATALYSIS A-GENERAL, 2008, 347 (01) :23-33

[9] TPR and XPS study of cobalt-copper mixed oxide catalysts: evidence of a strong Co-Cu interaction [J].

Fierro, G ;

Lo Jacono, M ;

Inversi, M ;

Dragone, R ;

Porta, P .

TOPICS IN CATALYSIS, 2000, 10 (1-2) :39-48

[10] Selective CO oxidation in excess of H2 over high-surface area CuO/CeO2 catalysts [J].

Gomez-Cortes, Antonio ;

Marquez, Yasser ;

Arenas-Alatorre, Jesus ;

Diaz, Gabriela .

CATALYSIS TODAY, 2008, 133 (1-4) :743-749

← 1 2 3 4 →