Isobutane aromatization in the presence of propane as a co-reactant over H-ZSM-5 catalysts using different crystallization times

Soroush Baradaran; Morteza Sohrabi; Parsia Moghimpour Bijani; Sayed Javid Royaee

Journal of Industrial and Engineering Chemistry, Vol.27, 354-361, July, 2015

DOI10.1016/j.jiec.2015.01.014 Export Citation

Isobutane aromatization in the presence of propane as a co-reactant over H-ZSM-5 catalysts using different crystallization times

Soroush Baradaran, Morteza Sohrabi^†, Parsia Moghimpour Bijani¹, and Sayed Javid Royaee²

Chemical Engineering Department, Amirkabir University of Technology, Tehran, Iran
¹Catalyst Research Group, Petrochemical Research and Technology Company, National Petrochemical Company, Tehran, Iran
²Refining Technology Development Division, Research Institute of Petroleum Industry, Tehran, Iran

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Co-Aromatization of isobutane and propane over H-ZSM-5 and Zn/ZSM-5 catalysts prepared by different crystallization time ranging from 24 h to 96 h at 180 °C was studied. The samples were characterized via XRD, BET, SEM and NH3-TPD. A maximum for crystallinity was observed at 72 h with 98% and Acidity along with crystal size increased with time. Performance tests in a fixed bed reactor at 550 °C showed that catalytic activity increased with crystallization time while the aromatics selectivity increased with crystallinity. The results also indicated that conversion of propane in the presence of isobutane was dramatically lower than individual propane test.

Keywords:H-ZSM-5;Crystallization time;Zn/ZSM-5;Co-aromatization;Propane aromatization;Isobutane aromatization

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[1] Fathi S, Sohrabi M, Falamaki C, Fuel, 116, 529 (2014)

[2] Louis B, Kiwi-Minsker L, Microporous Mesoporous Mater., 74, 171 (2004)

[3] Jacobs G, Alvarez WE, Resasco DE, Appl. Catal. A: Gen., 206(2), 267 (2001)

[4] Maldonado-Hodar F, Catal. Commun., 17, 89 (2012)

[5] Bijani PM, Sohrabi M, Sahebdelfar S, Ind. Eng. Chem. Res., 53(2), 572 (2014)

[6] Solymosi F, Szechenyi A, Appl. Catal. A: Gen., 278(1), 111 (2004)

[7] Frey K, Lubango L, Scurrell M, Guczi L, React. Kinet. Mech. Catal., 104, 303 (2011)

[8] Caeiro G, Carvalho RH, Wang X, Lemos MANDA, Lemos F, Guisnet M, Ribeiro FR, J. Mol. Catal. A-Chem., 255(1-2), 131 (2006)

[9] Zhang L, Liu HJ, Li XJ, Xie SJ, Wang YZ, Xin WJ, Liu SL, Xu LY, Fuel Process. Technol., 91(5), 449 (2010)

[10] Kumar N, Nieminen V, Demirkan K, Salmi T, Murzin DY, Laine E, Appl. Catal. A: Gen., 235(1-2), 113 (2002)

[11] Shirazi L, Jamshidi E, Ghasemi M, Cryst. Res. Technol., 43, 1300 (2008)

[12] Karimi R, Bayati B, Aghdam NC, Ejtemaee M, Babaluo AA, Powder Technol., 229, 229 (2012)

[13] Nicolaides CP, Sincadu NP, Scurrell MS, Catal. Today, 71(3-4), 429 (2002)

[14] Nicolaides C, Sincadu N, Scurrell M, Stud. Surf. Sci. Catal., 154, 2347 (2004)

[15] Nicolaides C, Sincadu N, Scurrell M, Stud. Surf. Sci. Catal., 136, 333 (2001)

[16] Sahoo SK, Viswanadham N, Ray N, Gupta JK, Singh ID, Appl. Catal. A: Gen., 205(1-2), 1 (2001)

[17] Dehertog WJH, Fromen GF, Appl. Catal. A: Gen., 189(1), 63 (1999)

[18] Guisnet M, Gnep N, Aittaleb D, Doyemet Y, Appl. Catal. A: Gen., 87, 255 (1992)

[19] Mohamed R, Fouad O, Ismail A, Ibrahim I, Mater. Lett., 59, 3441 (2005)