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Revista de Chimie (Rev. Chim.), Year 2016, Volume 67, Issue 3,



Andra Ioana Popescu (Stanica), Mihaela Bombos, Rami Doukeh, Dorin Bombos, Ion Bolocan

Acidity Influence of Ru Catalysts on the Hydrogenation of Naphtalene

Abstract:

The hydrogenation of naphtalene was conducted on two catalysts based on Ru, Ru /g-Al2O3 respectively Ru-Sn/Al-HMS-g-Al2O3. The distribution of the acid strength of the prepared catalysts was determined by thermic desorption of diethyl amine in the temperature range from 20 to 600°C. Experiments were carried out on a fixed bed catalytic reactor at 300-360°C, at 60 atm, naphtalene volume hourly space velocities of 1-2h-1 and molar ratio hydrogen/ naphtalene of 10/1. The main compounds identified were tetralin, alkyl-naphtalene and alkyl-tetralin. The naphthalene conversion on the Ru-Sn /Al-HMS-g-Al2O3 catalyst was higher than on the Ru / g-Al2O3 catalyst. Higher activity of catalyst Ru-Sn /Al-HMS-g-Al2O3 is due to both hydrogenation reactions to tetralin as well as to cracking and alkylation reactions to alkyl-aromatic hydrocarbons.

Keywords:
catalyst; hydrogenation; support acidity; naphtalene; selectivity

Issue: 2016, Volume 67, Issue 3
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