(Synthesis of ZSM-5 Zeolite Doped with Cations such as Zn(II) & Fe(II

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Kazemi Zangeneh, Fatemeh | 2014

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 46555 (03)
University: Sharif University of Technology
Department: Chemistry Science
Advisor(s): Ghanbari, Bahram
Abstract:
In this study, we synthesized ZSM-5 and doped ZSM-5 applying cations such as Zn(II) and Fe(II). Furthermore, we synthesized [Zn,Fe]-ZSM-5 using similar method for the first time. The final products were characterised by X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy. On the other hand, the hierarchical mesoporous Zn-ZSM-5 zeolite catalyst was prepared by alkali treatment by NaOH and Zn impregnation, and its application in the conversion of methanol to gasoline (MTG) process was studied. The modified zeolite samples after modification were also characterized by FT-IR and XRD methods. Zn impregnated mesoporous catalyst Zn-Alk-Z5 exhibited dramatic improvements in liquid hydrocarbons yield. We also found the optimum conditions for MTG test. These conditions were as temperature and flow of methanol. The optimum temperature was 360 ºC and optimum flow of methanol was found 1.5 mL min-1
Keywords:
Catalyst ; Optimization ; Doping ; ZSM-5 Zeolite ; Methanol Conversion to Gasoline (MTG)Process ; Alkali Treatment ; Zink Impregnation

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