Aromatization of n-heptane over H-AlMFI, Ga/H-AlMFI, H-GaMFI and H-GaAlMFI zeolite catalysts: influence of zeolitic acidity and non-framework gallium
- Choudhary, V. R.
- Mulla, S. A. R.
- Banerjee, S.
DOIAbstract
Influence of zeolite acidity (strong acid sites measured in terms of the pyridine chemisorbed at 400°C) and non-framework Ga-species present in the zeolite channels on the conversion (total and to aromatics) and selectivity in the aromatization of n-heptane at 500°C over the H-AlMFI (H-ZSM-5), Ga/ H-AlMFI, H-GaMFI and H-GaAlMFI zeolite catalysts (GHSV=3400 and 13,600 h<SUP>-1</SUP>) has been investigated. Among the zeolite catalysts, the H-GaAlMFI (with high acidity and high non-FW Ga) showed the highest n-heptane conversion and aromatization activity. Both the zeolitic acidity and non-FW Ga-species were found to play important role in the aromatization process, producing a combined effect
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