Dehydration reaction of bio-ethanol to ethylene over modified SAPO catalysts

Yu Chen; Yulong Wu; Ling Tao; Bin Dai; Mingde Yang; Zhen Chen; Xiaoyan Zhu

Journal of Industrial and Engineering Chemistry, Vol.16, No.5, 717-722, September, 2010

DOI10.1016/j.jiec.2010.07.013 Export Citation

Dehydration reaction of bio-ethanol to ethylene over modified SAPO catalysts

Yu Chen^{1, 2}, Yulong Wu^{1, †}, Ling Tao¹, Bin Dai^{2, 2}, Mingde Yang¹, Zhen Chen¹, and Xiaoyan Zhu^{2, 2}

¹Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, PR China
²Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Xinjiang, Shihezi 832000, PR China

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Mnmodified SAPO-11 (Mn-SAPO-11), Zn-SAPO-11, Mn-SAPO-34 and Zn-SAPO-34 were first synthesized with hydrothermal method in the laboratory. Dehydration of ethanol to ethylene over SAPO-11, SAPO-34 and four materials above as catalysts was carried out and Mn-SAPO-34 exhibited the best conversion and selectivity (99.35% and 98.44%, respectively) at 340 ℃. The introduction of Mn^(2+) or Zn^(2+) into the SAPO channel generated in Mn-SAPO or Zn-SAPO samples was proved by X-ray diffraction (XRD), scanning electron microscopy (SEM) and nitrogen adsorption. NH3-TPD study revealed that modification of Mn^(2+) or Zn^(2+) in the SAPO framework led to increase the weak acid strength and give rise to weak acid sites. The effects of operation parameters, such as loading amount, modification methods, reaction time, reaction temperature, mass space velocity and concentration of ethanol have also been investigated experimentally.

Keywords:SAPO;Dehydration;Ethanol;Ethylene;Modified

[References]

Takahara I, Saito M, Inaba M, Murata K, Catal. Lett., 105(3-4), 249 (2005)
Kochar NK, Marcell RL, Chem. Eng., 87, 80 (1980)
Chen GW, Li SL, Jiao FJ, Yuan Q, Catal. Today, 125(1-2), 111 (2007)
Chen GW, Li SL, Jiao FJ, Yuan Q, Catal. Today, 125(1-2), 111 (2007)
Bryant DE, Kranich WL, J. Catal., 8, 8 (1967)
Mao RL, Levesque P, Mclaughlin G, Dao LH, Appl. Catal., 34, 163 (1987)
Levanmao R, Nguyen TM, Mclaughlin GP, Appl. Catal., 48, 365 (1989)
Moser WR, Chiang CC, Thompson RW, J. Catal., 115, 532 (1989)
Delaspozas C, Lopezcordero R, Gonzalezmorales JA, Travieso N, Roquemalherbe R, J. Mol. Catal., 83, 145 (1993)
Phillips CB, Datta R, Ind. Eng. Chem. Res., 36(11), 4466 (1997)
Aguayo AT, Gayubo AG, Atutxa A, Olazar M, Bilbao J, Ind. Eng. Chem. Res., 41(17), 4216 (2002)
Winter O, Eng MT, Hydrocarb. Process., 55, 125 (1976)
Zhang X, Wang RJ, Yang XX, Zhang FB, Micropor. Mesopor. Mater., 116, 210 (2008)
Nguyen TM, Levanmao R, Appl. Catal., 58, 119 (1990)
Zhang Y, Hou TJ, Yan SH, Shen JF, Liu JW, Huang H, J. Nanjing Univ. Technol., 29, 85 (2007)
Lok BM, Messina CA, Patton RL, Gajek RT, Cannan TR, Flanigen EM, J. Am.Chem. Soc., 106, 6092 (1984)
Dutta P, Roy SC, Nandi LN, Samuel P, Pillai SM, Bhat BD, Ravindranathan M, J. Mol. Catal. A-Chem., 223(1-2), 231 (2004)
Lee YJ, Baek SC, Jun KW, Appl. Catal. A: Gen., 329, 130 (2007)
Um MH, Kang M, J. Ind. Eng. Chem., 4, 540 (2005)
Dubois DR, Obrzut DL, Liu J, Thundimadathil J, Adekkanattu PM, Guin JA, Punnoose A, Seehra MS, Fuel Process. Technol., 83(1-3), 203 (2003)
Wilson S, Barger P, Micropor. Mesopor. Mater., 29, 117 (1999)
Arias D, Colmenares A, Cubeiro ML, Goldwasser J, Lopez CM, Machado FJ, Sazo V, Catal. Lett., 45(1-2), 51 (1997)

[Referenced By]

[1] Takahara I, Saito M, Inaba M, Murata K, Catal. Lett., 105(3-4), 249 (2005)

[2] Kochar NK, Marcell RL, Chem. Eng., 87, 80 (1980)

[3] Chen GW, Li SL, Jiao FJ, Yuan Q, Catal. Today, 125(1-2), 111 (2007)

[4] Chen GW, Li SL, Jiao FJ, Yuan Q, Catal. Today, 125(1-2), 111 (2007)

[5] Bryant DE, Kranich WL, J. Catal., 8, 8 (1967)

[6] Mao RL, Levesque P, Mclaughlin G, Dao LH, Appl. Catal., 34, 163 (1987)

[7] Levanmao R, Nguyen TM, Mclaughlin GP, Appl. Catal., 48, 365 (1989)

[8] Moser WR, Chiang CC, Thompson RW, J. Catal., 115, 532 (1989)

[9] Delaspozas C, Lopezcordero R, Gonzalezmorales JA, Travieso N, Roquemalherbe R, J. Mol. Catal., 83, 145 (1993)

[10] Phillips CB, Datta R, Ind. Eng. Chem. Res., 36(11), 4466 (1997)

[11] Aguayo AT, Gayubo AG, Atutxa A, Olazar M, Bilbao J, Ind. Eng. Chem. Res., 41(17), 4216 (2002)

[12] Winter O, Eng MT, Hydrocarb. Process., 55, 125 (1976)

[13] Zhang X, Wang RJ, Yang XX, Zhang FB, Micropor. Mesopor. Mater., 116, 210 (2008)

[14] Nguyen TM, Levanmao R, Appl. Catal., 58, 119 (1990)

[15] Zhang Y, Hou TJ, Yan SH, Shen JF, Liu JW, Huang H, J. Nanjing Univ. Technol., 29, 85 (2007)

[16] Lok BM, Messina CA, Patton RL, Gajek RT, Cannan TR, Flanigen EM, J. Am.Chem. Soc., 106, 6092 (1984)

[17] Dutta P, Roy SC, Nandi LN, Samuel P, Pillai SM, Bhat BD, Ravindranathan M, J. Mol. Catal. A-Chem., 223(1-2), 231 (2004)

[18] Lee YJ, Baek SC, Jun KW, Appl. Catal. A: Gen., 329, 130 (2007)

[19] Um MH, Kang M, J. Ind. Eng. Chem., 4, 540 (2005)

[20] Dubois DR, Obrzut DL, Liu J, Thundimadathil J, Adekkanattu PM, Guin JA, Punnoose A, Seehra MS, Fuel Process. Technol., 83(1-3), 203 (2003)

[21] Wilson S, Barger P, Micropor. Mesopor. Mater., 29, 117 (1999)

[22] Arias D, Colmenares A, Cubeiro ML, Goldwasser J, Lopez CM, Machado FJ, Sazo V, Catal. Lett., 45(1-2), 51 (1997)