Low temperature molten salt synthesis of porous La1-xSrxMn0.8Fe0.2O3 (0 ≤ x ≤ 0.6) microspheres with high catalytic activity for CO oxidation

doi:10.1016/S1872-2067(16)62502-0

Abstract

Abstract:

A molten salt method was developed to prepare porous La_1-xSr_xMn_0.8Fe_0.2O₃ (0 ≤ x ≤ 0.6) microspheres using hierarchical porous δ-MnO₂ microspheres as a template in eutectic NaNO₃-KNO₃. X-ray diffraction patterns showed that single phase LaMn_0.8Fe_0.2O₃ with good crystallinity was synthesized at 450 ℃ after 4 h. Transmission electron microscope images exhibited that the LaMn_0.8Fe_0.2O₃ sample obtained at 450 ℃ after 4 h possessed a porous spherical morphology composed of aggregated nanocrystallites. Field emission scanning electron microscope images indicated that the growth of the porous LaMn_0.8Fe_0.2O₃ microspheres has two stages. SEM pictures showed that a higher calcination temperature than 450 ℃ had an adverse effect on the formation of a porous spherical structure. The LaMn_0.8Fe_0.2O₃ sample obtained at 450 ℃ after 4 h displayed a high BET surface area of 55.73 m²/g with a pore size of 9.38 nm. Fourier transform infrared spectra suggested that Sr²⁺ ions entered the A sites and induced a decrease of the binding energy between Mn and O. The CO conversion with the La_1-xSr_xMn_0.8Fe_0.2O₃ (0 ≤ x ≤ 0.6) samples indicated that the La_0.4Sr_0.6Mn_0.8Fe_0.2O₃ sample had the best catalytic activity and stability. Further analysis by X-ray photoelectron spectroscopy demonstrated that Sr²⁺ doping altered the content of Mn⁴⁺ ions, oxygen vacancies and adsorbed oxygen species on the surface, which affected the catalytic performance for CO oxidation.

Key words: Molten salt method, δ-MnO₂ microsphere, Porous spherical structure, Calcination temperature, Carbon monoxide oxidation

Xuehui Huang, Pengju Niu, Xiaohui Shang. Low temperature molten salt synthesis of porous La_1-xSr_xMn_0.8Fe_0.2O₃ (0 ≤ x ≤ 0.6) microspheres with high catalytic activity for CO oxidation[J]. Chinese Journal of Catalysis, 2016, 37(8): 1431-1439.

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References

[1] D. Gamarra, C. Belver, M. Fernandez-Garcia, A. Martinez Arias, J. Am. Chem. Soc., 2007, 129, 12064-12065.
[2] J. Li, L. Zhao, G. Z. Lu, Ind. Eng. Chem. Res., 2009, 48, 641-646.
[3] K. M. Parida, K. H. Reddy, S. Martha, D. P. Das, N. Biswal, Int. J. Hydrogen Energy, 2010, 35, 12161-12168.
[4] P. Porta, S. De Rossi, M. Faticanti, G. Minelli, I. Pettiti, L. Lisi, Turcom, J. Solid State Chem., 1999, 146, 291-304.
[5] X. J. Zhang, H. J. Li, Y. Li, W. J. Shen, Chin. J. Catal., 2012, 33, 1109-1114.
[6] L. L. Zhu, G. Z. Lu, Y. Q. Wang, Y. Guo, Y. L. Guo, Chin. J. Catal., 2010, 31, 1006-1012.
[7] C. H. Wang, C. L. Chen, H. S. Weng, Chemosphere, 2004, 57, 1131-1138.
[8] S. Ponce, M. A. Pena, J. L. G. Fierro, Appl. Catal. B, 2000, 24, 193-205.
[9] G. H. Jonker, J. H. van Santen, Physica, 1950, 16, 337-349.
[10] Y. Geng, [MS Dissertation], Wuhan University of Technology, Wuhan, 2013, 34-53.
[11] Y. H. Wu, L. T. Luo, W. Liu, Chem. Eng. Oil Gas, 2007, 36(2), 101-105.
[12] Y. G. Wang, J. W. Ren, Y. Q. Wang, F. Y. Zhang, X. H. Liu, Y. Guo, G. Z. Lu, J. Phys. Chem. C, 2008, 112, 15293-15298.
[13] M. Liu, L. Hu, P. F. Xu, K. Zhao, L. B. Zong, R. B. Yu, J. Chen, X. R. Xing, Chem. Res. Chin. Univ., 2015, 31, 342-346.
[14] W. F. Chen, J. M. Hong, Y. X. Li, J. Alloys Compd., 2009, 484, 846-850.
[15] Y. Z. Wang, S. H. Xie, J. G. Deng, S. X. Deng, H. Wang, H. Yan, H. X. Dai, ACS Appl. Mater. Interface, 2014, 6, 17394-17401.
[16] R. X. Chen, J. G. Yu, W. Xiao, J. Mater. Chem. A, 2013, 1, 11682-11690.
[17] W. Xiao, D. L. Wang, X. W. Lou, J. Phys. Chem. C, 2010, 114, 1694-1700.
[18] P. Q. Zhang, Y. G. Zhan, B. X. Cai, C. C. Hao, J. Wang, C. X. Liu, Z. J. Meng, Z. L. Yin, Q. Y. Chen, Nano Res., 2010, 3, 235-243.
[19] Y. X. Wang, H. Q. Sun, H. M. Ang, M. O. Tade, S. B. Wang, ACS Appl. Mater. Interface, 2014, 6, 19914-19923.
[20] Y. X. W, X. Z. Cui, Y. S. Li, Z. Shu, H. G. Chen, J. L. Shi, Microporous Mesoporous Mater., 2013, 176, 8-15.
[21] Z. H. Liu, X. J. Yang, Y. J. Makita, K. Ooi, Chem. Mater., 2002, 14, 4800-4806.
[22] V. Stengl, J. Bludska, F. Oplustil, T. Nemec, Mater. Res. Bull., 2011, 46, 2050-2056.
[23] C. Bernard, B. Durand, M. Verelst, P. Lecante, J. Mater. Sci., 2004, 39, 2821-2826.
[24] Y. X. Wen, C. B. Zhang, H. He, Y. B. Yu, Y. S. T. Teraoka, Catal. Today, 2007, 126, 400-405.
[25] M. V. Ananth, S. Pethkar, K. Dakshinamurthi, J. Power Sources, 1998, 75, 278-282.
[26] H. Wang, Z. Zhao, C. M. Xu, J. Liu, Catal. Lett., 2005, 102, 251-256.
[27] J. X. Zheng, J. Liu, Z. Zhao, J. F. Xu, A. J. Duan, G. Jiang, Catal. Today, 2012, 191, 146-153.
[28] L. Zheng, X. S. Wu, Chin. Phys. B, 2013, 22, 107806/1-107806/4.
[29] G. C. Allen, S. J. Harris, J. A. Jutson, J. M. Dyke, Appl. Surf. Sci., 1989, 37, 111-134.
[30] S. Rousseau, S. Loridant, P. Delichere, A. Boreave, J. P. Deloume, P. Vernoux, Appl. Catal. B, 2009, 88, 438-447.
[31] B. Y. Bai, J. H. Li, J. M. Hao, Appl. Catal. B, 2015, 164, 241-250.
[32] H. Over, A. P. Seitsonen, Science, 2002, 297, 2003-2005.
[33] D. Widmann, R. J. Behm, Angew. Chem. Int. Ed., 2011, 50, 10241-10245.

Low temperature molten salt synthesis of porous La_1-xSr_xMn_0.8Fe_0.2O₃ (0 ≤ x ≤ 0.6) microspheres with high catalytic activity for CO oxidation

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