Activity and resistance to leaching of Cu-based catalysts in the wet oxidation of phenol

被引：95

作者：

Arena, F ^{[1
]}

Giovenco, R ^{[1
]}

Torre, T ^{[1
]}

Venuto, A ^{[1
]}

Parmaliana, A ^{[1
]}

机构：

[1] Univ Messina, Dipartimento Chim Ind & Ingn Mat, I-98166 Messina, Italy

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2003年 / 45卷 / 01期

关键词：

wet oxidation; phenol; cu catalysts; leaching; homogeneous catalysis;

D O I：

10.1016/S0926-3373(03)00163-2

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 activity and resistance to leaching of a co-precipitated CuCeOx (Cu-at:Ce-at = 1:9; Tc, 500 and 800degreesC) catalyst in the wet oxidation (CWO) of phenol (T-R, 150degreesC; P-R, 12 atm), with reference to a CuZnAlOx commercial system, has been investigated using a semi-batch "slurry" reactor with continuous feeding of oxygen. The role of homogeneous catalysis by leached Cu2+ ions on the activity pattern of solid catalysts is addressed. Thermal and chemical ("acid washing") treatments of the CuCeOx catalyst induce marked modifications on the structure and redox properties also altering its CWO activity-selectivity pattern. The whole set of experimental findings leads to infer that the CWO of phenol on Cu-based catalysts proceeds via a homogeneous-heterogeneous path promoted by the leaching of Cu2+ ions. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：51 / 62

页数：12

共 29 条

[1] Characterisation of copper catalysts and activity for the oxidation of phenol aqueous solutions
Alejandre, A
Medina, F
Fortuny, A
Salagre, P
Sueiras, JE
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 1998, 16 (01) : 53 - 67
[2] Studies on Cu/CeO2:: A new NO reduction catalyst
Bera, P
Aruna, ST
Patil, KC
Hegde, MS
[J]. JOURNAL OF CATALYSIS, 1999, 186 (01) : 36 - 44
[3] DAVILN HR, 1984, IND ENG CHEM FUND, V23, P387
[4] DELEITENBURG D, 1996, APPL CATAL B-ENVIRON, V11, P29
[5] Kinetic modelling of catalytic wet air oxidation of phenol by simulated annealing
Eftaxias, A
Font, J
Fortuny, A
Giralt, J
Fabregat, A
Stüber, F
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2001, 33 (02) : 175 - 190
[6] Catalytic oxidation of aqueous phenolic solutions catalyst deactivation and kinetics
Hamoudi, S
Belkacemi, K
Larachi, F
[J]. CHEMICAL ENGINEERING SCIENCE, 1999, 54 (15-16) : 3569 - 3576
[7] Wet oxidation of phenol catalyzed by unpromoted and platinum-promoted manganese cerium oxide
Hamoudi, S
Larachi, F
Cerrella, G
Cassanello, M
[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1998, 37 (09) : 3561 - 3566
[8] Catalytic wet oxidation of phenol over PtxAg1-xMnO2/CeO2 catalysts
Hamoudi, S
Sayari, A
Belkacemi, K
Bonneviot, L
Larachi, F
[J]. CATALYSIS TODAY, 2000, 62 (04) : 379 - 388
[9] Wet oxidation of phenol on Ce1-xCuxO2-δ catalyst
Hocevar, S
Batista, J
Levec, J
[J]. JOURNAL OF CATALYSIS, 1999, 184 (01) : 39 - 48
[10] CWO of phenol on two differently prepared CuO-CeO2 catalysts
Hocevar, S
Krasovec, UO
Orel, B
Aricó, AS
Kim, H
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2000, 28 (02) : 113 - 125

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