Abstract
The stability of ruthenium catalysts supported on TiO2 and ZrO2 were studied in the wet air oxidation of aqueous solution of succinic and p-hydroxybenzoic acids taken as model effluent and on real effluents from the paper-pulp industry. Catalyst recycling experiments were conducted in batch reactor and long-term stability tests were conducted in trickle-bed reactor. In all experiments, ruthenium and support materials were perfectly stable to leaching, sintering and fouling. Ruthenium catalysts experienced a weak deactivation as they were exposed to air, e.g., in recycling experiments however the loss of activity occurred only after the first exposure and was completely reversible upon catalyst reduction. The deactivation was attributed to an over-oxidation of the catalyst surface particularly noticeable in the case of very small Ru-clusters (1 nm).
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V.S. Mishra V.V. Mahajani J.B. Joshi (1995) Ind. Eng. Chem. Res. 34 2 Occurrence Handle1:CAS:528:DyaK2MXjtFGks78%3D
F Luck (1999) Catal. Today 53 81 Occurrence Handle1:CAS:528:DyaK1MXmsFajsrw%3D
S.T. Kolaczkowski P. Plucinski F.J. Beltran F.J. Rivas D.B. McLurgh (1999) Chem. Eng. J. 73 143 Occurrence Handle1:CAS:528:DyaK1MXks1Ckt7o%3D
S. Imamura (1999) Ind. Eng. Chem. Res. 38 1743 Occurrence Handle1:CAS:528:DyaK1MXhvF2ms70%3D
P. Gallezot N. Laurain P. Isnard (1996) Appl. Catal. 9 11
P. Gallezot S. Chaumet A. Perrard P. Isnard (1997) J. Catal 168 104 Occurrence Handle1:CAS:528:DyaK2sXjt1KjsLo%3D
J.C. Béziat M. Besson P. Gallezot S. Juif S. Durécu (1997) Stud. Surf. Sci. Catal. 110 615
J.C. Béziat M. Besson P. Gallezot S. Durécu (1999) J. Catal 182 129
J.C. Béziat M. Besson P. Gallezot S. Durécu. (1999) Ind. Eng. Chem. Res. 38 1310
M Besson J.C. Béziat B. Blanc S. Durécu P. Gallezot (2000) Stud. Surf. Sci. Catal. 130 1553
A. Pintar M. Besson P. Gallezot (2001) Appl. Catal. B: Environ. 30 123 Occurrence Handle1:CAS:528:DC%2BD3MXhtFSqtrs%3D
A. Pintar M. Besson P. Gallezot (2001) Appl. Catal. B: Environ. 31 275 Occurrence Handle1:CAS:528:DC%2BD3MXjsleiu7c%3D
A. Pintar G. Bercic M. Besson P. Gallezot (2004) Appl. Catal. B: Environ 47 143 Occurrence Handle1:CAS:528:DC%2BD2cXmvVCgug%3D%3D
A. Pintar M. Besson P. Gallezot J. Gibert D. Martin (2004) Water Res. 38 289 Occurrence Handle1:CAS:528:DC%2BD3sXpsFelsrY%3D Occurrence Handle14675640
A. Pigamo M. Besson B. Blanc P. Gallezot A. Blackburn O. Kozynchenko S. Tennison E. Crezee F. Kapteijn (2002) Carbon 40 1267 Occurrence Handle1:CAS:528:DC%2BD38XjvF2ktb4%3D
M Besson P. Gallezot (2000) Catal. Today 57 127 Occurrence Handle1:CAS:528:DC%2BD3cXhsFensbY%3D
H.T. Gomes J.J.M. Orfao J.L. Figueiredo J.L. Faria (2004) Ind. Eng. Chem. Res. 43 2216
J. Barbier SuffixJr F. Delanoë F. Jabouille D. Duprez G. Blanchard P. Isnard (1998) J. Catal 177 378 Occurrence Handle1:CAS:528:DyaK1cXltVKqtLs%3D
Q. Zhang K.T. Chuang (1998) Ind. Eng. Chem. Res. 37 3343 Occurrence Handle1:CAS:528:DyaK1cXkvVGktr8%3D
Q. Zhang K.T. Chuang (1999) Can. J. Chem. Eng. 77 399 Occurrence Handle1:CAS:528:DyaK1MXjt1WhsLg%3D
H.R. Devlin I.J. Harris (1984) Ind. Eng. Chem. Fundam. 23 387 Occurrence Handle1:CAS:528:DyaL2cXlsFOjsbs%3D
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Besson, M., Gallezot, P. Stability of ruthenium catalysts supported on TiO2 or ZrO2 in catalytic wet air oxidation. Top Catal 33, 101–108 (2005). https://doi.org/10.1007/s11244-005-2517-1
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DOI: https://doi.org/10.1007/s11244-005-2517-1