Characterization and catalytic application of MnCl2 modified HZSM-5 zeolites in synthesis of aromatics from syngas via dimethyl ether

Qingde Zhang; Yisheng Tan; Caihong Yang; Hongjuan Xie; Yizhuo Han

Journal of Industrial and Engineering Chemistry, Vol.19, No.3, 975-980, May, 2013

DOI10.1016/j.jiec.2012.11.019 Export Citation

Characterization and catalytic application of MnCl2 modified HZSM-5 zeolites in synthesis of aromatics from syngas via dimethyl ether

Qingde Zhang, Yisheng Tan^†, Caihong Yang, Hongjuan Xie, and Yizhuo Han^†

State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, The Chinese Academy of Sciences, Taiyuan 030001, China

E-mail:,

The conversion of syngas to aromatics via dimethyl ether was investigated over MnCl2 modified HZSM-5 zeolites. The results demonstrated that 2%MnCl2 modified HZSM-5 (SiO2/Al2O3 = 38) exhibited higher pxylene selectivity than other catalysts and further decreased 1,2,4,5-tetramethylbenzene selectivity. The CO conversion was obviously increased after 5%MnCl2 modification to HZSM-5. The catalysts were characterized by XRD, BET, XPS, FT-IR, NH3-TPD, SEM, element analysis and O2-TPO. The loading amount of MnCl2 affected the adsorption and reaction of DME molecules on zeolites. Appropriate amount of MnCl2 introduction could adjust the acidity and pore volume of HZSM-5 to increase p-xylene selectivity and CO conversion.

Keywords:Aromatics;Syngas;Dimethyl ether;HZSM-5;MnCl2

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[Referenced By]

[1] Cui X, Liaoning Chemical Industry., 37, 51 (2008)

[2] Breen JP, Burch R, Kulkarni M, McLaughlin D, Collier PJ, Golunski SE, Appl. Catal. A: Gen., 316(1), 53 (2007)

[3] You H, Xu C, Gao J, Yan P, Pet. Chem., 46(2), 94 (2006)

[4] You HJ, Journal of Guangdong University of Technology., 24, 14 (2007)

[5] Wang L, Tao L, Xie M, Xu G, Huang J, Xu Y, Catalysis Letters., 21, 35 (1993)

[6] Liu SL, Ohnishi R, Ichikawa M, J. Catal., 220(1), 57 (2003)

[7] Wu P, Kan QB, Wang XX, Wang DW, Xing HJ, Yang PP, Wu TH, Appl. Catal. A: Gen., 282(1-2), 39 (2005)

[8] Kuznetsov PN, J. Catal., 218(1), 12 (2003)

[9] Zhang ZL, Zhou YS, Li CX, Xu CM, Journal of Fuel Chemistry and Technology., 36, 160 (2008)

[10] Freeman D, Wells RPK, Hutchings GJ, Chemical Communications., 18, 1754 (2001)

[11] Zhu JH, Acta Petrolei Sinica (Petroleum Processing Section)., 14, 46 (1998)

[12] Wang DS, Zeng HS, Guan NJ, Chinese Journal of Catalysis., 23, 333 (2002)

[13] Kecskemeti A, Barthos R, Solymosi F, J. Catal., 258(1), 111 (2008)

[14] Fang YW, Tang J, Huang XC, Shen WB, Song YB, Sun CY, Chinese Journal of Catalysis., 31, 264 (2010)

[15] Lee S, Gogate M, Kulik C, Journal of Fuel Cell Science and Technology International., 13, 1039 (1995)

[16] Martinez A, Lopez C, Appl. Catal. A: Gen., 294(2), 251 (2005)

[17] Thoret J, Man PP, Ngokoli-Kekele P, Fraissard J, Microporous and Mesoporous Materials., 491, 45 (2001)

[18] Weast RC, Selbi SM, Hodgman CD (Eds.), Handbook of Chemistry and Physics, 45th ed., The Chemical Rubber Co., Cleveland, OH, p. B-191. (1964)

[19] A´ lvarez-Galva´ n MC, De la Pena O’Shea VA, Fierro JLG, Arias PL, Catalysis Communications., 4, 223 (2003)

[20] Alvarez-Galvan MC, Pawelec B, O'Shea VAD, Fierro JLG, Arias PL, Appl. Catal. B: Environ., 51(2), 83 (2004)

[21] Forester TR, Howe RF, Journal of the American Chemical Society., 109, 5076 (1987)