State of Ru on CeO2 and its catalytic activity in the wet oxidation of acetic acid

被引：130

作者：

Hosokawa, S ^{[1
]}

Kanai, H ^{[1
]}

Utani, K ^{[1
]}

Taniguchi, Y ^{[1
]}

Saito, Y ^{[1
]}

Imamura, S ^{[1
]}

机构：

[1] Kyoto Inst Technol, Fac Engn & Design, Sakyo Ku, Kyoto 6068585, Japan

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2003年 / 45卷 / 03期

关键词：

Ru/CeO2; wet oxidation; TPR; acetic acid;

D O I：

10.1016/S0926-3373(03)00129-2

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：

The relationship between the state of Ru on CeO2 and catalytic activity in the wet oxidation of acetic acid was investigated for Ru/CeO2 catalysts prepared by different methods. The temperature programmed reduction (TPR) experiments of Ru/CeO2 showed that the oxygen species of RuO2 was reduced at different temperatures depending upon the methods of preparation. Ru species reduced at low temperatures could not be observed by TEM and XRD. It was concluded that Ru-O-Ce bonds in the well-dispersed Ru species are highly fragile and its mobile oxygen is the active species in the wet oxidation. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：181 / 187

页数：7

共 12 条

[1] Total oxidation of acetic acid in aqueous solutions over noble metal catalysts [J].

Barbier-Jr, J ;

Delanoe, F ;

Jabouille, F ;

Duprez, D ;

Blanchard, G ;

Isnard, P .

JOURNAL OF CATALYSIS, 1998, 177 (02) :378-385

[2] Ionic dispersion of Pt and Pd on CeO2 by combustion method:: Effect of metal-ceria interaction on catalytic activities for NO reduction and CO and hydrocarbon oxidation [J].

Bera, P ;

Patil, KC ;

Jayaram, V ;

Subbanna, GN ;

Hegde, MS .

JOURNAL OF CATALYSIS, 2000, 196 (02) :293-301

[3] Catalytic and noncatalytic wet oxidation [J].

Imamura, S .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1999, 38 (05) :1743-1753

[4] WET OXIDATION OF AMMONIA CATALYZED BY CERIUM-BASED COMPOSITE OXIDES [J].

IMAMURA, S ;

DOI, A ;

ISHIDA, S .

INDUSTRIAL & ENGINEERING CHEMISTRY PRODUCT RESEARCH AND DEVELOPMENT, 1985, 24 (01) :75-80

[5] Reduction behavior of Ru/CeO2 catalysts and their activity for wet oxidation [J].

Imamura, S ;

Taniguchi, Y ;

Ikeda, Y ;

Hosokawa, S ;

Kanai, H ;

Ando, H .

REACTION KINETICS AND CATALYSIS LETTERS, 2002, 76 (02) :201-206

[6] WET OXIDATION CATALYZED BY RUTHENIUM SUPPORTED ON CERIUM(IV) OXIDES [J].

IMAMURA, S ;

FUKUDA, I ;

ISHIDA, S .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1988, 27 (04) :718-721

[7] Wet-oxidation of a model domestic wastewater on a Ru/Mn/Ce composite catalyst [J].

Imamura, S ;

Okumura, Y ;

Nishio, T ;

Utani, K ;

Matsumura, Y .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1998, 37 (03) :1136-1139

[8] WET OXIDATION OF ACETIC-ACID CATALYZED BY CO-BI COMPLEX OXIDES [J].

IMAMURA, SI ;

HIRANO, A ;

KAWABATA, N .

INDUSTRIAL & ENGINEERING CHEMISTRY PRODUCT RESEARCH AND DEVELOPMENT, 1982, 21 (04) :570-575

[9] CATALYTIC-OXIDATION OF AQUEOUS-SOLUTIONS OF ORGANICS - AN EFFECTIVE METHOD FOR REMOVAL OF TOXIC POLLUTANTS FROM WASTE-WATERS [J].

LEVEC, J ;

PINTAR, A .

CATALYSIS TODAY, 1995, 24 (1-2) :51-58

[10] Wet air oxidation: past, present and future [J].

Luck, F .

CATALYSIS TODAY, 1999, 53 (01) :81-91

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