Research on the Catalytic Activity of Mn_yCe_zO_x/TiO₂ for Ethyl Acetate Oxidation

Abstract:

Manganese and cerium based catalysts with different Mn/Ce molar ratios prepared by impregnation method for ethyl acetate oxidation. The activity tests of the samples were performed in a fixed-bed reactor. The effect of gas hourly space velocity (GHSV) and ethyl acetate concentration on the catalytic activity of the catalyst were also investigated. The results showed that these catalysts had high activity for the catalytic oxidation of ethyl acetate, of which the catalyst Mn_0.9Ce_0.1O_x/TiO₂ exhibited the best activity, and the temperature required for 90% conversion of ethyl acetate was at 216 °C. The catalyst Mn_0.9Ce_0.1O_x/TiO₂ still maintained high activity in the range of GHSV (16,500 to 48,500 h^-1) and ethyl acetate concentration (4526 to 7092 mg/m³). In additional, experiments for measuring stability of Mn_0.9Ce_0.1O_x/TiO₂ were carried out, and experimental results showed that the good stability of Mn_0.9Ce_0.1O_x/TiO₂ was kept after it has run for 25 hours.

• Periodical: Advanced Materials Research (Volumes 781-784)
• Pages: 308-311
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.781-784.308
• Online since: September 2013
• Authors: Xin Li, Wei Su, Qi Bin Xia, Zhi Meng Liu
• Keywords: Activity, Catalytic Oxidation, Ethyl Acetate, Manganese Based Catalysts, TiO₂

References

[1] C. Gennequin, R. Cousin, J.F. Lamonier, S. Siffert, A. Aboukaïs: Catal. Commun. Vol. 9 (2008), pp.1639-1643.

[2] C.K. Sang, G.S. Wang: Appl. Catal. B Vol. 98 (2010), pp.180-185.

[3] H.Y. Pan, M.Y. Xu. Z. Li , S.S. Huang, C. He: Chemosphere Vol. 76 (2009), pp.721-726.

[4] H.F. Huang, Y.Q. Liu, W. Tang, Y.F. Chen: Catal. Commun. Vol. 9 (2008), pp.55-59.

[5] W.G. Shim, J.W. Lee, S.C. Kim: Appl. Catal. B Vol. 84 (2008), pp.133-141.

[6] Y.X. Yang, X.L. Xu, K. P. Sun: J. Hazard. Mater. Vol. 139 (2007), pp.140-145.

[7] G.S.P. Soylu: Chem. Eng. J. Vol. 162 (2010), pp.380-387.

[8] T.K. Tseng, L. Wang, T. Ho: J. Hazard. Mater. Vol. 178 (2010), pp.1035-1040.

[9] M.R. Morales, B.P. Barbero, L.E. Cadús: Fuel Vol. 87 (2008), pp.1177-1186.

[10] S. Cimino, A. Di Benedetto, R. Pirone, G. Russo: Catal. Today Vol. 83 (2003), pp.33-43.