Preparation and Characterization of Perovskite-Type Oxide Catalysts for Combustion of Methane

Abstract:

Article Preview

A series of rare earth perovskite-type oxides La09Sr0.1Co0.9Mn0.1O3La08Sr0.2Co0.8Mn0.2O3 and La05Sr0.5Co0.5Mn0.5O3 were prepared along the sol-gel method and characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (SEM), transmission electron microscopy techniques (TEM) and catalytic activity measurement for combustion of CH4. The results indicated that a perfect crystal structure of perovskite was formed and La3+ and Co3+ ions were partly replaced by Sr2+ and Mn3+ ions, respectively, and perovskite-type oxides were composed of nanocrystals with particle size of 20~50nm. The catalytic activity for the combustion of CH4 was evaluated and La05Sr0.5Co0.5Mn0.5O3 exhibited best performance with the temperature of 50% and 90% conversion efficiency of 723K and 833K.

Info:

Periodical:

Edited by:

Jinsheng Liang and Lijuan Wang

Pages:

77-81

Citation:

G. Xue et al., "Preparation and Characterization of Perovskite-Type Oxide Catalysts for Combustion of Methane", Advanced Materials Research, Vol. 427, pp. 77-81, 2012

Online since:

January 2012

Export:

Price:

$38.00

[1] K.H. Hell, G.K. Piotrowski and R.M. Schaefer: Society of Automotive Engineers. Vol. 6(1994), p.940473.

[2] S. Subramannian, WLH. Watkins, M.S. Chattha: US. Patent 5176887, (1993).

[3] J.K. Lampert, M.S. Kasi and R J. Farrauto: Appl. Catal B. vol. 14(1997), p.211.

[4] P. Ciambelli, S. Cimino and S. De Rossi, et al.: Appl. Catal B. vol. 24(2000), p.243.

[5] C.H. Kim, G.S. Qin and K. Dahlberg, et al.: Science. Vol. 327(20100), p.1624.

[6] T. Seiyama, N. Yamazoe and K. Eguchi: Ind. Eng. Chem. Prod. Res. Dev. 24, 19 (1985).

[7] H. Tanaka, M. Misono: Curr. Opin. Sci. Vol. 5(2001), p.381.

[8] B.M. Penetrante, R. N. Brusasco and B. T. Merritt, et al.: Society of Automotive Engineers. Vol. 1 (1999), p.3687.

[9] S.E. Thomas, A.R. Martin and D. Rarbone, et al.: SAE. vol. 1(2000), p. (1926).

[10] M.L. Balmer, R. Tonkyn and G. Maupin, et al.: SAE. vol. 1(2000), p.16016.

[11] M.M. Zwinkels, S.G. Jaras and P.G. Menon, et al.: Rev. Sci. Eng. vol. 35(1993), p.319.