Institut Francais Du Pe'trole

Other

Bernard Juguin, Deceased

Francis Raatz

Jean-Paul Bournonville

Alexandre Rojey

Joseph Y Larue

Jean-Claude P Collin

By Jeannine Juguin, Legal Representative

By Sylvie Juguin, Legal Representative

For the aromatization of hydrocarbons containing 2 to 4 carbon atoms per molecule in the presence of a specific and preferably acid catalyst, the catalyst contains an MFI zeolite in which is introduced at least one noble metal from the platinum family and at least one additional metal chosen from within the group consisting of tin, germanium, lead and indium, and the catalyst optionally contains an amorphous matrix.

Process for the aromatization of hydrocarbons containing 2 to 4 carbon

The invention relates to a catalyst and a catalytic process for the aromatization of hydrocarbons containing 2 to 4 carbon atoms per molecule. The catalyst contains a MFI zeolite and an amorphous matrix containing at least one noble metal from the platinum family, at least one additional metal chosen from tin, germanium, lead and indium and at least one alkali metal or alkaline earth metal.

Catalyst containing a zeolite, a noble metal from the family of

The benzene content of hydrocarbon gasolines is accomplished by (a) fractionating at least one hydrocarbon gasoline into a light fraction A, with an increased benzene content, and a heavy fraction B, with a reduced benzene content; (b) contacting the light fraction A at a temperature below room temperature with a gas containing at least a fraction of olefins in which the number of carbon atoms is from 2 to 5 per molecule so that at least a fraction of said olefins is absorbed in light fraction A; at the end of stage (b), separating a residual gas with a reduced olefin content from a liquid fraction C, with an increased olefin content; (d) passing the fraction C from stage (c) into an alkylation reactor so that at least a fraction of the benzene is alkylated by at least a fraction of the olefins; (e) fractionating the mixture emerging from stage (d) so as to produce, firstly, a gas phase chiefly comprising gases which were not converted during stage (d) and, secondly, a liquid phase, at least partly containing the non-alkylated benzene and alkylbenzenes; and (f) mixing the liquid phase from stage (e) with the heavy fraction B from stage (a).

Method of reducing the benzene content of gasolines

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Rueil-Malmaison, France

Bernard Juguin, Deceased