Nanoclays as nano adsorbent for oxidation of H2S into elemental sulfur

Ali Mohamadalizadeh; Jafar Towfighi; Alimorad Rashidi; Mehrdad Manteghian; Ali Mohajeri; Rohollah Arasteh

Korean Journal of Chemical Engineering, Vol.28, No.5, 1221-1226, May, 2011

DOI10.1007/s11814-010-0486-y Export Citation

Nanoclays as nano adsorbent for oxidation of H2S into elemental sulfur

Ali Mohamadalizadeh^†, Jafar Towfighi, Alimorad Rashidi¹, Mehrdad Manteghian, Ali Mohajeri², and Rohollah Arasteh¹

Department of Chemical Engineering, Tarbiat Modares University, P. O. Box 14115-143, Tehran, Iran
¹Nanotechnology Research Center, Research Institute of Petroleum Industry, Iran
²Gas division, Research Institute of Petroleum Industry, Iran

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Modified bentonites were used for the oxidation of H2S into elemental sulfur. Active phases such as iron and cobalt sulfide were added to supports Cloisite 30B and 15A. The produced nano adsorbents were characterized by X-Ray diffraction, ICP, BET surface area and SEM. Selective oxidation of H2S was carried out over the nano adsorbent in the experimental setup. The tests were performed at 70 and 180 ℃, under atmospheric pressure and in the presence of 5,000 ppm of H2S in the inlet gas stream. The results confirmed the increase in the distribution of active metals and activity of Cloisite 30B, in comparison with Cloisite 15A. Cobalt-containing support showed significant improvement in the capacity of H2S removal, and in the outlet stream less than 50 ppm of H2S was detected.

Keywords:Hydrogen Sulfide;Modified Bentonite;Iron Sulfide;Cobalt Sulfide;Adsorption

[References]

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Truong LVA, Abatzoglou N, Biomass Bioenerg., 29(2), 142 (2005)
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Nguyen-Thanh D, Bandosz TJ, Carbon., 43, 359 (2005)
Nguyen D, Bandosz T, Micropor. Mesopor., 92, 47 (2006)
Stepova K, Maquarrie D, Krip I, Appl. Clay Sci., 42, 625 (2009)
Yilmaza O, Cheaburub CN, Durraccioc D, Gulumsera G, Vasileb C, Appl. Clay Sci., 49, 288 (2010)
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[Referenced By]

[1] Wang R, Sep. Purif. Technol., 31(1), 111 (2003)

[2] Sasaoka E, Hirano S, Kasaoka S, Sakata Y, Energy Fuels, 8(5), 1100 (1994)

[3] Elsner MP, Menge M, Muller C, Agar DW, Catal. Today, 79(1-4), 487 (2003)

[4] Van Den Brink P, Geus JW, US Patent, 5,286,697 (1994)

[5] Berben PH, Geus JW, US Patent, 4,818,740 (1989)

[6] Connock L, Sulphur., 257, 34 (1998)

[7] Truong LVA, Abatzoglou N, Biomass Bioenerg., 29(2), 142 (2005)

[8] Chun SW, Jang JY, Park DW, Woo HC, Chung JS, Appl. Catal. B: Environ., 16(3), 235 (1998)

[9] Keller N, Pham-Huu C, Ledoux MJ, Appl. Catal. A: Gen., 217(1-2), 205 (2001)

[10] Nguyen P, Edouard D, Nhut JM, Ledoux MJ, Pham C, Pham-Huu C, Appl. Catal. B: Environ., 76(3-4), 300 (2007)

[11] Ania CO, Bandosz TJ, Energy Fuels, 20(3), 1076 (2006)

[12] Bandosz TJ, Le Q, Carbon., 36, 39 (1998)

[13] Bagreev A, Bandoz TJ, Carbon., 39, 2303 (2001)

[14] Wang L, Cao B, Wang SD, Yuan Q, Chem. Eng. J., 118(3), 133 (2006)

[15] Wang L, Cao B, Wang SD, Yuan Q, Chem. Eng. J., 118(3), 133 (2006)

[16] Nahin PG, Sherbarne JE, US Patent, 2,243,049 (1960)

[17] Krishna B, Prakash D, Appl. Clay Sci., 20, 65 (2001)

[18] Mikhail S, Zaki T, Khalil L, Appl. Catal. A: Gen., 227(1-2), 265 (2002)

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

[20] Nguyen-Thanh D, Bandosz TJ, Carbon., 43, 359 (2005)

[21] Nguyen D, Bandosz T, Micropor. Mesopor., 92, 47 (2006)

[22] Stepova K, Maquarrie D, Krip I, Appl. Clay Sci., 42, 625 (2009)

[23] Yilmaza O, Cheaburub CN, Durraccioc D, Gulumsera G, Vasileb C, Appl. Clay Sci., 49, 288 (2010)

[24] Primavera A, Trovarelli A, Andreussi P, Dolcetti G, Appl. Catal. A: Gen., 173(2), 185 (1998)

[25] Nhut JM, Nguyen P, Huu CP, Keller N, Ledoux MJ, Catal. Today., 92, 91 (2004)