Influence of hydrothermal treatment on the acid and redox functions of a Ga/HZSM5 catalyst

Influence of hydrothermal treatment on the acid and redox functions of a Ga/HZSM5 catalyst

After steaming at 530° C for 30 minutes and for 6 hours, a Ga/HZSM5 catalyst was characterized by three model reactions (meta-xylene isomerization, propane aromatization and methylcyclohexane transformation). The activity and selectivity of this catalyst were compared to those of a fresh Ga/HZSM5 ca...

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Veröffentlicht in:Brazilian journal of chemical engineering 2000-03, Vol.17 (1), p.99-103
Hauptverfasser: Rodrigues, M.G.F., Magnoux, P., Guisnet, M.
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Magnoux, P.
Guisnet, M.
description After steaming at 530° C for 30 minutes and for 6 hours, a Ga/HZSM5 catalyst was characterized by three model reactions (meta-xylene isomerization, propane aromatization and methylcyclohexane transformation). The activity and selectivity of this catalyst were compared to those of a fresh Ga/HZSM5 catalyst. It was demonstrated that hydrothermal treatment provokes a significant decrease in the dehydrogenation activity of the gallium species and a small decrease in the protonic acidity of the catalyst.
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title Influence of hydrothermal treatment on the acid and redox functions of a Ga/HZSM5 catalyst
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