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Synthesis and Modification of Zeolite ZSM-5 Catalyst with Solutions of Calcium Carbonate (CaCO3) and Sodium Carbonate (Na2CO3) for Methanol to Gasoline Conversion

  • Ehsan Kianfar , Mahmoud Salimi EMAIL logo , Vahid Pirouzfar and Behnam Koohestani
Published/Copyright: April 5, 2018

Abstract

In this article, the ZSM-5 catalyst was used as the base catalyst and its structure was modified for conducting Methanol to Gasoline reactions. ZSM-5 catalyst reacts to the solutions with diverse concentrations of calcium carbonate (CaCO3) and sodium carbonate (Na2CO3), and consequently, some changes were applied to its internal structure. Thus, Methanol to Gasoline (MTG) process was carried out under pressure of 1 atm, the temperature of 400°C, and specific surface area of 300 m2g-1 on synthetic zeolite ZSM-5 catalyst by a fixed-bed reactor. Structure and morphology of the synthesized catalyst were investigated by XRD, FT-IR, SEM, XRF and BET analyses. The effect of CaCO3 and Na2CO3 solutions used for catalyst modification on the distribution of hydrocarbon products were studied and compared to ZSM-5 catalyst. The result of catalyst activity evaluation tests shows that the modified catalyst with a 0.1 molar solution of CaCO3 and Na2CO3 provides the highest selectivity and efficiency compared to the hydrocarbons in boiling point range of C6+ gasoline.

NOMENCLATURE

T:

temperature [°C]

id:

internal diameter [mm]

FA0:

molar flowrate of methanol [cc/min]

W:

weight of catalyst [g]

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Received: 2017-11-26
Revised: 2018-01-14
Accepted: 2018-03-12
Published Online: 2018-04-05

© 2018 Walter de Gruyter GmbH, Berlin/Boston

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