Removal of sulfur dioxide from dibenzothiophene sulfone over Mg-based oxide catalysts prepared by spray pyrolysis

Young Kwon Park; Sun Young Kim; Hyeon Joo Kim; Kyeong Youl Jung; Kwang-Eun Jeong; Soon-Yong Jeong; Jong-Ki Jeon

Korean Journal of Chemical Engineering, Vol.27, No.2, 459-464, February, 2010

DOI10.1007/s11814-010-0086-x Export Citation

Removal of sulfur dioxide from dibenzothiophene sulfone over Mg-based oxide catalysts prepared by spray pyrolysis

Young Kwon Park , Sun Young Kim¹, Hyeon Joo Kim¹, Kyeong Youl Jung¹, Kwang-Eun Jeong², Soon-Yong Jeong², and Jong-Ki Jeon^{1, †}

Faculty of Environmental Engineering, University of Seoul, Seoul 130-743, Korea
¹Department of Chemical Engineering, Kongju National University, Gongju 314-701, Korea
²Petroleum Displacement Technology Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 305-600, Korea

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Spray pyrolysis was used to prepare catalysts containing magnesium with mesopores. MgO-SiO2, MgOAl2O3, and MgO-SiO2-Al2O3 catalysts were synthesized using cetyltrimethylammonium bromide (CTAB) as a templating agent. The characteristics of the catalysts were examined by N2 adsorption, XRD, XRF and the temperature-programmed desorption of carbon dioxide. The MgO-SiO2 catalyst has well-developed mesopores, a large surface area and well dispersed magnesium oxide. The basic sites on the MgO-SiO2 catalyst were much stronger than those on the MgO-SiO2-Al2O3 and MgO-Al2O3 catalysts. The catalytic performance for the decomposition of dibenzothiophene sulfone (DBTS) to biphenyl and sulfur dioxide gas was examined in a fixed-bed reactor. The MgO-SiO2 catalyst has the highest activity in the cracking of DBTS, which was attributed to the strong basicity due to the dispersed effect of magnesium oxide. Compared to the MgO catalyst, the mesoporous MgO-SiO2 solid base can improve significantly the catalytic efficiency for the removal of sulfur dioxide from dibenzothiophene sulfone.

Keywords:Spray Pyrolysis;Dibenzothiophene Sulfone;Solid Base Catalyst;Desulfurization

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[3] Nooney RI, Dhanasekaran T, Chem Y, Josephs R, Ostafin AE, Chem. Mater., 14, 4721 (2002)

[4] Chung JS, Kim DJ, Ahn WS, Ko JH, Cheong WJ, Korean J. Chem. Eng., 21(1), 132 (2004)

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[9] Hampsey JE, Arsenault S, Hu Q, Lu Y, Chem. Mater., 17, 2475 (2005)

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[11] Jung KY, Lee HW, J. Lumin., 126, 469 (2007)

[12] Gurav A, Kodas TT, Pluym T, Xiong Y, Aerosol Sci. & Tech., 19, 411 (1993)

[13] Ortega J, Kodas TT, J. Aerosol Sci., 23, 253 (1992)

[14] Baek CM, Jung KY, Park KY, Park SB, Cho SB, Korean Chem. Eng. Res., 46(5), 880 (2008)

[15] Kim JH, Jung KY, Park KY, Cho SB, Micropor. Mesopor. Mater., In press (2009)

[16] Lee KK, Kang YC, Jung KY, Kim JH, J. Alloys Compd., 395, 280 (2005)

[17] Jung DS, Hong SK, Lee HJ, Kang YC, J. Alloys Compd., 398, 309 (2005)

[18] Chica A, Corma A, Domine ME, J. Catal., 242(2), 299 (2006)

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[20] Hur JM, Park KI, Lee HI, J. Korean Ind. Ing. Chem., 11, 563 (2000)

[21] Kang MR, Lim HM, Lee SC, Lee SH, Kim KJ, J. Materials Online, 6, 218 (2004)

[22] Kocal JA, Brandvold TA, US Patent 6,368,495 (2002)

[23] Wu G, Wang X, Zhao N, Wei W, Sun Y, Proc. 15th International Zeolite Conference, Beijing, 12-17 Aug., 1123 (2007)

[24] You N, Kim MJ, Jeong KE, Jeong SY, Park YK, Jeon JK, J. Nanosci. Nanotech., In press (2010)

[25] Hattori H, Chem. Rev., 95(3), 537 (1995)

[26] Umdu ES, Tuncer M, Seker E, Bioresource Technol., 100, 2828 (2009)

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