Removal of minor concentration of H2S on MDEA-modified SBA-15 for gas purification

Quanmin Xue; Yingshu Liu

Journal of Industrial and Engineering Chemistry, Vol.18, No.1, 169-173, January, 2012

DOI10.1016/j.jiec.2011.11.005 Export Citation

Removal of minor concentration of H2S on MDEA-modified SBA-15 for gas purification

Quanmin Xue^†, and Yingshu Liu

Institute of Gas Separation Engineering, School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, Republic of China

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A promising adsorbent for H2S removal of minor concentration for gas purification was prepared by synthesizing and modifying the mesoporous molecular silica of SBA-15 with methyl-diethyl-amine (MDEA). Removal performance of minor concentration of H2S on the adsorbent was experimentally studied in a dynamic setup. The adsorbents showed good performance in removing H2S from gas steams. The loaded amines did not change the ordered structure of SBA-15, but enhanced its removing H2S. The adsorbents were characterized by X-ray powder diffraction (XRD) and N2 adsorption/desorption. Effect of the R (the loading ratio) of MDEA, effect of initial H2S concentration and effect of moisture on removal performance of H2S were studied respectively. With increase of the R of MDEA, the H2S removal performance of the adsorbent was improved obviously. When R of MDEA was 0.6, the removal performance was optimum. Initial H2S concentration had a large effect on the removal performance. Both breakthrough capacity and saturation capacity increased as the initial H2S concentration increased. In the presence of moisture, the experimental results showed the improvement in the removal performance of H2S. In addition, not only was the adsorbent regenerable by purging with the purified gas, but also the removal performance was stable in removal adsorption cycles.

Keywords:Hydrogen sulfide;SBA-15;Removal;Breakthrough

[References]

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Belmabkhout Y, De Weireld G, Sayari A, Langmuir, 25(23), 13275 (2009)
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[Referenced By]

[1] Laperdrix E, Costentin G, Saur O, Lavalley JC, Nedez C, Savin-Poncet S, Nougayrede J, J. Catal., 189(1), 63 (2000)

[2] Le Leuch LM, Subrenat A, Le Cloirec P, Langmuir, 19(26), 10869 (2003)

[3] Feng W, Kwon S, Borguet E, Vidic R, Environ. Sci. Technol., 39, 9744 (2005)

[4] Nedez C, Ray JL, Catal. Today, 27(1-2), 49 (1996)

[5] Tsai JH, Jeng FT, Chiang HL, Adsorption., 7, 357 (2001)

[6] Kohl A, Neilsen R, Gas Purification, 5th ed., Gulf Professional Publishing, Houston, TX (1997)

[7] Yuan WX, Bandosz TJ, Fuel., 86, 2736 (2007)

[8] Andrey B, Habibur R, Teresa JB, Environ. Sci. Technol., 34, 4587 (2000)

[9] Bandosz TJ, J. Colloid Interface Sci., 246(1), 1 (2002)

[10] Adib F, Bagreev A, Bandosz TJ, Environ. Sci. Technol., 34, 686 (2000)

[11] Baird T, Campbell KC, Holliman PJ, Hoyle RW, Huxam M, Stirling D, Williams BP, Morris M, J. Mater. Chem., 9, 599 (1999)

[12] Baird T, Campbell KC, Holliman PJ, Hoyle R, Noble G, Stirling D, Williams BP, J. Mater. Chem., 13, 2341 (2003)

[13] Xue M, Chitrakar R, Sakane K, Ooi K, Green Chem., 5, 529 (2003)

[14] Polychronopoulou K, Fierro JLG, Efstathiou AM, Appl. Catal. B: Environ., 57(2), 125 (2005)

[15] Polychronopoulou K, Galisteo FC, Granados ML, Fierro JLG, Bakas T, Efstathiou AM, J. Catal., 236(2), 205 (2005)

[16] Abatzoglou N, Boivin S, Biofuels Bioprod. Biorefin., 3, 42 (2009)

[17] Hamon L, Serre C, Devic T, Loiseau T, Millange F, Ferey G, De Weireld G, J. Am. Chem. Soc., 131(25), 8775 (2009)

[18] Wang X, Ma XL, Sun L, Song CS, Green Chem., 9, 695 (2007)

[19] Wang XX, Ma XL, Xu XC, Sun L, Song CS, Top. Catal., 49, 108 (2008)

[20] Belmabkhout Y, De Weireld G, Sayari A, Langmuir, 25(23), 13275 (2009)

[21] Xue QM, Liu YS, Sep. Sci. Technol., 46(4), 679 (2011)

[22] Zhao D, Huo Q, Feng J, Chmelka BF, Stucky GD, J. Am. Chem. Soc., 120(24), 6024 (1998)

[23] Zhao DY, Feng JL, Huo QS, Melosh N, Fredrickson GH, Chmelka BF, Stucky GD, Science, 279(5350), 548 (1998)