Deactivation of Cu - Cr/γ-alumina Catalysts for Combustion of Exhaust Gases
The paper relates to a catalyst, comprising copperchromium
spinel, coated on carrier γ-Al2O3. The effect of preparation
conditions on the active component composition and activity
behavior of the catalysts is discussed. It was found that the activity of
carbon monoxide, DME, formaldehyde and methanol oxidation
reaches a maximum at an active component content of 20 – 30 wt. %.
Temperature calcination at 500oC seems to be optimal for the γ–
alumina supported CuO-Cr2O3 catalysts for CO, DME, formaldehyde
and methanol oxidation. A three months industrial experiment was
carried out to elucidate the changes in the catalyst composition
during industrial exploitation of the catalyst and the main reasons for
catalyst deactivation.
It was concluded that the CuO–Cr2O3/γ–alumina supported
catalysts have enhanced activity toward CO, DME, formaldehyde
and methanol oxidation and that these catalysts are suitable for
industrial application. The main reason for catalyst deactivation
seems to be the deposition of iron and molybdenum, coming from the
main reactor, on the active component surface.
[1] Xiaolan Tang, Baocai Zhang, Yong Li, Yide Xu, Qin Xin and Wenjie
Shen, Carbon monoxide oxidation over CuO/CeO2 catalysts, Catal.
Today, 93-95 (2004) 191-198.
[2] D. R. Mechandjiev, P. G. Dimitrova, I. A. Tzolovski, A. B. Raevski,
Cu/CO spinel containing exhaust gas catalyst and method of its
preparation (2003) WO Patent 03061821
[3] Y. F. Yo-Yao, J. T. Kummer, A study of high temperature treated
supported metal oxide catalysts, J. Catal., 46 (1977) 388-401.
[4] F. Severino, J. Brito, O. Carias, J. Laine, Comperative study of
Alumina-Supported CuO and CuCr2O4 as catalysts for CO Oxidation, J.
Catal., 102 (1986) 172-179.
[5] Chin-Cheng Chien, Wen-Po Chuang and Ta-Jen Huang, Effect of heattreatment
conditions on Cu-Cr/╬│-alumina catalyst for carbon monoxide
and propene oxidation, Applied Catalysis A: General, 131 (1995) 73-87.
[6] J. Laine, J. Brito and F. Severino, Germán Castro, Patricia Tacconi,
Sim├│n Yunes and José Cruz, Surface copper enrichment by reduction of
copper chromite catalyst employed for carbon monoxide oxidation
Catal. Lett., 5 (1990) 45-54.
[7] J. R. Monnier, M. J. Hanrahan and G. Apai, A study of the Catalytically
Actyve Copper Species in the Synthesis of Methanol Over Cu-Cr
Oxide, J. Catal., 92 (1985) 119-126.
[8] C. A. Leech, and L. E. Campbell, Spinel Solid Solution Catalysts for
Automotive Applications, Adv. Chem. Ser., 143 (1975) 161-177.
[9] T. V. Mulina, T. V. Borisova, V. A. Ljubucshkin and V. A.
Chumachenko, Catalyst for extensive oxidation of organics and carbon
monoxide in gas emissions and method of preparation there (Versions),
(2003) RU Patent 2 199 388 C2.
[10] P. W. Park and J. S. Ledford, The influence of surface structure on the
catalytic activity of alumina supported copper oxide catalysts. Oxidation
of carbon monoxide and methane, Appl. Catalysis, B-Enviromental, 15
(3-4) (1998) 221-131.
[11] A. P. Vieira Soares, M. Farinha Portela, A. Kiennemann, Iron
molybdates for selective oxidation of methanol: Mo excess effects on
the deactivation behavior, Cat. Commun., 2 (2001) 159-164.
[12] J. M. Tatibouët, Methanol oxidation as a catalytic surface probe, Appl.
Cat. A: General, 148 (1997) 213-252.
[13] M. C. Alvarez-Galvan, B. Pawelec, V. A. de la Pena O-Shea, J. L. G.
Fierro and P. L. Arias, Formaldehyde/methanol combustion on aluminasupported
manganese-palladium oxide catalyst, Appl. Catalysis B:
Enviromental, 51 (2004) 83-91.
[14] Cremona Alberto, Rubini Carlo, Vogna Edoardo, Oxidation catalyst,
(2004) US Patent 2004121904.
[15] K. Ivanov, D. Dimitrov, Alumina supported CuO - MnO2 catalysts for
deep oxidation of carbon oxide and organic compounds, Scientific
articles, Ecology 2006, Part 1 (2006) 228-238.
[16] V. Petkov, N.Bakaltchev, FIT, a computer program for decomposition
of powder diffraction patterns and profile analysis of pair correlation
functions, Appl. Crystalography, 23 (1990) 138-140.
[17] K. Ivanov, Method for the preparation of oxide catalyst for the
oxidation of methanol to formaldehyde, (1993) BG patent No 60779 B1.
[18] M. Wojciechowska, J. Haber, S. Łomnicki, J. Stoch, Structure and
catalytic activity of double oxide system: Cu-Cr-O supported on MgF2
Journal of Molecular Catalysis A: Chemical, 141 (1999) 155-170.
[1] Xiaolan Tang, Baocai Zhang, Yong Li, Yide Xu, Qin Xin and Wenjie
Shen, Carbon monoxide oxidation over CuO/CeO2 catalysts, Catal.
Today, 93-95 (2004) 191-198.
[2] D. R. Mechandjiev, P. G. Dimitrova, I. A. Tzolovski, A. B. Raevski,
Cu/CO spinel containing exhaust gas catalyst and method of its
preparation (2003) WO Patent 03061821
[3] Y. F. Yo-Yao, J. T. Kummer, A study of high temperature treated
supported metal oxide catalysts, J. Catal., 46 (1977) 388-401.
[4] F. Severino, J. Brito, O. Carias, J. Laine, Comperative study of
Alumina-Supported CuO and CuCr2O4 as catalysts for CO Oxidation, J.
Catal., 102 (1986) 172-179.
[5] Chin-Cheng Chien, Wen-Po Chuang and Ta-Jen Huang, Effect of heattreatment
conditions on Cu-Cr/╬│-alumina catalyst for carbon monoxide
and propene oxidation, Applied Catalysis A: General, 131 (1995) 73-87.
[6] J. Laine, J. Brito and F. Severino, Germán Castro, Patricia Tacconi,
Sim├│n Yunes and José Cruz, Surface copper enrichment by reduction of
copper chromite catalyst employed for carbon monoxide oxidation
Catal. Lett., 5 (1990) 45-54.
[7] J. R. Monnier, M. J. Hanrahan and G. Apai, A study of the Catalytically
Actyve Copper Species in the Synthesis of Methanol Over Cu-Cr
Oxide, J. Catal., 92 (1985) 119-126.
[8] C. A. Leech, and L. E. Campbell, Spinel Solid Solution Catalysts for
Automotive Applications, Adv. Chem. Ser., 143 (1975) 161-177.
[9] T. V. Mulina, T. V. Borisova, V. A. Ljubucshkin and V. A.
Chumachenko, Catalyst for extensive oxidation of organics and carbon
monoxide in gas emissions and method of preparation there (Versions),
(2003) RU Patent 2 199 388 C2.
[10] P. W. Park and J. S. Ledford, The influence of surface structure on the
catalytic activity of alumina supported copper oxide catalysts. Oxidation
of carbon monoxide and methane, Appl. Catalysis, B-Enviromental, 15
(3-4) (1998) 221-131.
[11] A. P. Vieira Soares, M. Farinha Portela, A. Kiennemann, Iron
molybdates for selective oxidation of methanol: Mo excess effects on
the deactivation behavior, Cat. Commun., 2 (2001) 159-164.
[12] J. M. Tatibouët, Methanol oxidation as a catalytic surface probe, Appl.
Cat. A: General, 148 (1997) 213-252.
[13] M. C. Alvarez-Galvan, B. Pawelec, V. A. de la Pena O-Shea, J. L. G.
Fierro and P. L. Arias, Formaldehyde/methanol combustion on aluminasupported
manganese-palladium oxide catalyst, Appl. Catalysis B:
Enviromental, 51 (2004) 83-91.
[14] Cremona Alberto, Rubini Carlo, Vogna Edoardo, Oxidation catalyst,
(2004) US Patent 2004121904.
[15] K. Ivanov, D. Dimitrov, Alumina supported CuO - MnO2 catalysts for
deep oxidation of carbon oxide and organic compounds, Scientific
articles, Ecology 2006, Part 1 (2006) 228-238.
[16] V. Petkov, N.Bakaltchev, FIT, a computer program for decomposition
of powder diffraction patterns and profile analysis of pair correlation
functions, Appl. Crystalography, 23 (1990) 138-140.
[17] K. Ivanov, Method for the preparation of oxide catalyst for the
oxidation of methanol to formaldehyde, (1993) BG patent No 60779 B1.
[18] M. Wojciechowska, J. Haber, S. Łomnicki, J. Stoch, Structure and
catalytic activity of double oxide system: Cu-Cr-O supported on MgF2
Journal of Molecular Catalysis A: Chemical, 141 (1999) 155-170.
@article{"International Journal of Chemical, Materials and Biomolecular Sciences:55538", author = "Krasimir Ivanov and Dimitar Dimitrov and Boyan Boyanov", title = "Deactivation of Cu - Cr/γ-alumina Catalysts for Combustion of Exhaust Gases", abstract = "The paper relates to a catalyst, comprising copperchromium
spinel, coated on carrier γ-Al2O3. The effect of preparation
conditions on the active component composition and activity
behavior of the catalysts is discussed. It was found that the activity of
carbon monoxide, DME, formaldehyde and methanol oxidation
reaches a maximum at an active component content of 20 – 30 wt. %.
Temperature calcination at 500oC seems to be optimal for the γ–
alumina supported CuO-Cr2O3 catalysts for CO, DME, formaldehyde
and methanol oxidation. A three months industrial experiment was
carried out to elucidate the changes in the catalyst composition
during industrial exploitation of the catalyst and the main reasons for
catalyst deactivation.
It was concluded that the CuO–Cr2O3/γ–alumina supported
catalysts have enhanced activity toward CO, DME, formaldehyde
and methanol oxidation and that these catalysts are suitable for
industrial application. The main reason for catalyst deactivation
seems to be the deposition of iron and molybdenum, coming from the
main reactor, on the active component surface.", keywords = "catalyst deactivation, CuO-Cr2O3 catalysts, deep
oxidation.", volume = "5", number = "1", pages = "42-7", }
