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Azzouz, A.; Nibou, D.; Abbad, B.; Achache, M.
Haut Commissariat a la Recherche, Algiers (Algeria). Centre de Developpement des Materiaux1990
Haut Commissariat a la Recherche, Algiers (Algeria). Centre de Developpement des Materiaux1990
AbstractAbstract
[en] Y-type faujasite, previously used in purifying aqueous wastes containing radioactive elements, are studied as catalysts in heterogeneous reactions such as octanol amination. This process consists in alkylating ammoniac NH3 by octanol-1 in a flow reactor containing a fixed bed of pelleted catalysts. Acidic catalysts like Y-type faujasite impregnated with low concentration leaching solution containing between 10 and 1000 ppm of uranium show interesting activities and selectivities in yielding primary, secondary and tertiary amines. High octanol conversions were obtained reaching 60 mol.% for appreciable selectivities for producing amines of about 60-80 mol.%. Compared to the non-active fresh zeolite, the catalysts obtained present good activities essentially due to the presence of uranyl cations UO2++. The latter seems to play the main role in activating the zeolite by enhancing its Bronsted surface acidity. Another interest of this process consists in obtaining Trioctylamine (TOA), an important extraction agent in uranium hydrometallurgy or its derivatives (MOA and DOA) which are very used in chemical industry
Original Title
Octylation de l'ammoniac a l'aide de catalyseurs a base de faujasite contenant principalement l'uranium
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Source
Jun 1990; 10 p; Scientific communication presented at: Premier colloque Franco-Maghrebin sur la catalyse Hammamet (Tunisia) 4-8 June 1990.
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