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Aromatization of n-hexane over Ga, Mo and Zn modified H-ZSM-5 zeolite catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
49629 46757 2015 4 PDF Available
Title
Aromatization of n-hexane over Ga, Mo and Zn modified H-ZSM-5 zeolite catalysts
Abstract

•Aromatization of n-hexane was studied over Mo, Zn and Ga modified H-ZSM-5 catalyst.•Aromatic activity was dominant for Ga and Zn modified catalysts.•Addition of Mo enhanced cracking activity of the H-ZSM-5 catalyst at 500 °C.•High reaction temperatures (> 550 °C) lead to a decrease in aromatic selectivity.

n-Hexane aromatization was investigated at 500 °C on parent and metal (i.e. Ga, Mo and Zn) modified H-ZSM-5 zeolite catalysts. Conversion reached 88% over H-ZSM-5 and was stable. Addition of metal resulted in lower conversion (< 80%). Formation of aromatic compounds was favored on Ga/H-ZSM-5 (> 35%) and Zn/H-ZSM-5 (> 40%) while H-ZSM-5 and Mo/H-ZSM-5 showed higher cracking activity. Gallium and zinc favored aromatization. At 600 °C a decrease in activity with increasing TOS was observed. A decrease in aromatics selectivity was also observed. The aromatics selectivity with increase in TOS of Ga/H-ZSM-5 (43–27%) and Mo/H-ZSM-5 (35–27%) catalysts was higher than for Zn/H-ZSM-5 (46–7%).

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Keywords
Aromatization; n-Hexane; H-ZSM-5; BTX; Mo; Ga and Zn
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Aromatization of n-hexane over Ga, Mo and Zn modified H-ZSM-5 zeolite catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 72, 5 December 2015, Pages 49–52
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
Online Support
Any Questions? feel free to contact us