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Influence of Si/Ga and Si/Al ratios on propane aromatization over highly active H-GaAlMFI

Paper ID Volume ID Publish Year Pages File Format Full-Text
52733 46883 2006 4 PDF Available
Title
Influence of Si/Ga and Si/Al ratios on propane aromatization over highly active H-GaAlMFI
Abstract

Conversion of propane to aromatics has been investigated at 550 °C and space velocity range of 3000–12 000 cc/g/h over galloaluminosilicate zeolites (GaAlMFI) containing similar bulk Si/(Al + Ga) ratio but markedly different individual Si/Al and Si/Ga ratios. While Al showed a propensity to be distributed predominantly in the zeolite framework, a large fraction of total Ga was present as non-FW Ga species; due to this the strong acidity was higher for the GAlMFI zeolite with the larger bulk Al content. The zeolite with the larger bulk Al content (GAL1) showed superior propane aromatization (initial and time-on-stream) activity compared to the zeolite with the larger Ga content (GAL2). The aromatic distribution was also significantly influenced by the bulk Si/Al and Si/Ga ratios of the zeolites. While the benzene and C8 aromatics selectivity was higher for GAL2, the selectivity for toluene was higher for GAL1.

Keywords
Aromatization; Si/Ga ratio; Si/Al ratio; Propane; Ga-based zeolites; Zeolitic factors
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Influence of Si/Ga and Si/Al ratios on propane aromatization over highly active H-GaAlMFI
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 7, Issue 3, March 2006, Pages 166–169
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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