THE SYNTHESIS OF SAPO-34 AT DIFFERENT CRYSTALLIZATION TEMPERATURE AND ITS CATALYTIC PERFORMANCE FOR METHANOL TO OLEFINS REACTION

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NEMATI ARBATANI H.; TOWFIGHI DARYAN J.; KALANTAR KOHDAMI F.

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Paper Information

Journal: IRANIAN JOURNAL OF CHEMICAL ENGINEERING Year:2014 | Volume:11 | Issue:4 Page(s): 31-39

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Title

THE SYNTHESIS OF SAPO-34 AT DIFFERENT CRYSTALLIZATION TEMPERATURE AND ITS CATALYTIC PERFORMANCE FOR METHANOL TO OLEFINS REACTION

Author(s)

NEMATI ARBATANI H. | TOWFIGHI DARYAN J. | KALANTAR KOHDAMI F. | Issue Writer Certificate

Keywords

SAPO-34

MTO PROCESS

CRYSTALLIZATION TEMPERATURE

Abstract

In order to enhance the catalytic performance of SAPO-34 for the reaction of methanol to light olefins (MTO), three different CRYSTALLIZATION TEMPERATUREs were used to synthesize SAPO-34. The catalysts were synthesized hydrothermally with molar composition as 1 Al2O3: 1 P2O5: 0.4 SiO2: 1 TEAOH: 0.5 TEA: 0.5 MOR: 70 H2O. The effects of the CRYSTALLIZATION TEMPERATURE on the phase purity, morphology and functional groups of SAPO-34 were characterized by XRD, SEM and FTIR techniques. The relative crystallinity was decreased by increasing CRYSTALLIZATION TEMPERATURE and some impurities appeared at high CRYSTALLIZATION TEMPERATURE. All samples showed cubic morphology with different crystal size. The catalytic performance of synthesized SAPO- 34 was investigated in a fixed-bed reactor at 410oC. For the MTO reaction, all synthesized catalysts showed similar product distribution and methanol conversion, but light olefins selectivity was greatly dependent on the crystallization condition. The sample was synthesized at 170oC and 24 h, possessed the highest light olefins due to highest amount of acid sites, relative crystallinity and smallest mean crystal size.

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APA: Copy

NEMATI ARBATANI, H., TOWFIGHI DARYAN, J., & KALANTAR KOHDAMI, F.. (2014). THE SYNTHESIS OF SAPO-34 AT DIFFERENT CRYSTALLIZATION TEMPERATURE AND ITS CATALYTIC PERFORMANCE FOR METHANOL TO OLEFINS REACTION. IRANIAN JOURNAL OF CHEMICAL ENGINEERING, 11(4), 31-39. SID. https://sid.ir/paper/298426/en

Vancouver: Copy

NEMATI ARBATANI H., TOWFIGHI DARYAN J., KALANTAR KOHDAMI F.. THE SYNTHESIS OF SAPO-34 AT DIFFERENT CRYSTALLIZATION TEMPERATURE AND ITS CATALYTIC PERFORMANCE FOR METHANOL TO OLEFINS REACTION. IRANIAN JOURNAL OF CHEMICAL ENGINEERING[Internet]. 2014;11(4):31-39. Available from: https://sid.ir/paper/298426/en

IEEE: Copy

H. NEMATI ARBATANI, J. TOWFIGHI DARYAN, and F. KALANTAR KOHDAMI, “THE SYNTHESIS OF SAPO-34 AT DIFFERENT CRYSTALLIZATION TEMPERATURE AND ITS CATALYTIC PERFORMANCE FOR METHANOL TO OLEFINS REACTION,” IRANIAN JOURNAL OF CHEMICAL ENGINEERING, vol. 11, no. 4, pp. 31–39, 2014, [Online]. Available: https://sid.ir/paper/298426/en

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