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AssigneeInterox (Societe Anonyme)
InventorsJean-Pierre Ganhy, Pierre Jacobs, Marleen Baes, Johan Martens
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Process for the synthesis of aromatic alkylated hydrocarbons with a saturated alkyl chain including at least four carbon atoms, according to which an aromatic hydrocarbon, replaced by an alkyl group with a short saturated chain comprising one to three carbon atoms, is made to react with an olefin in the presence of a catalyst made up of at least one alkaline metal or a alkaline metal hydride impregnated on an alumina support. The process is characterised by the fact that the catalyst is prepared in the reaction medium in the presence of the aromatic hydrocarbon with a short alkyl chain by mixing anhydrous alumina with the alkaline metal hydride or with the alkaline metal, and then the olefin is introduced in order to start the reaction.
A process for the synthesis of an alkylated aromatic hydrocarbon with a saturated alkyl chain containing at least four carbon atoms, comprising reacting an aromatic hydrocarbon substituted by a saturated short-chain alkyl group containing one to three carbon atoms with a suitable olefin in the presence of a catalyst comprising at least one alkali metal, an alkali metal hydride or a mixture of the alkali metal and the alkali metal hydride impregnated onto an alumina support, the process further comprising preparing the catalyst by mixing the alumina support with the alkali metal, the alkali metal hydride, or the mixture of the alkali metal and the alkali metal hydride in a reaction medium comprising the aromatic hydrocarbon substituted by saturated short-chain alkyl group containing one to three carbon atoms and introducing the olefin, under reaction conditions, into the reaction medium to start the reaction.
A process for synthesizing an alkylated aromatic hydrocarbon having a saturated alkyl chain containing at least four carbon atoms from an aromatic hydrocarbon substituted by a saturated short-chain alkyl group containing one to three carbon atoms and an olefin, comprising:
A method for preparing a catalyst comprising adding, under reaction conditions, an alumina support and an alkali metal, an alkali metal hydride or a mixture of the alkali metal and the alkali metal hydride to an aromatic hydrocarbon substituted by a saturated short-chain alkyl group containing one to three carbon atoms.
Dependencies are inferred from the claim text.