Enichem Synthesis S.p.a

Polimeri Europa S.p.a.

Enichem Sintesi S.p.a.

Enichem S.p.a

Eni S.p.a.

Other

Anic S.p.a.

Enitecnologie S.p.a.

Enichimica S.p.a.

Dow Global Technolgoies LLC

Snamprogetti S.p.a.

Euron S.p.a.

Versalis S.p.a.

Franco Rivetti

Ugo Romano

Fiorenzo Renzi

Franco Mizia

Daniele Delledonne

Claudio Gagliardi

Marcello Notari

Roberto Buzzoni

Alberto Cesana

Leonardo Dalloro

Gianni Girotti

Nicola Di Muzio

Angela Carati

Giuseppe Paparatto

Maria Angela Mantegazza

Giordano De Alberti

Virginio Arrigoni

Stefano Ramello

Luigi Rivola

Caterina Rizzo

Maurizio Ghirardini

Guido Spano′

Fausto Genoni

Giacomo Sasselli

Giuseppe Civardi

Pietro Andrigo

Guido Garone

Umberto Sgambato

Pietro Allegrini

Carlo Perego

Alberto Greco

Pietro Cesti

Aldo Bosetti

Luigi Balducci

Marco Ricci

Roberto Millini

Luciana Crisci

Renato Paludetto

Enrico Traverso

Renzo Bignazzi

Sergio Francantonio Lombardini

Carlo Calderoni

Donatella Berti

Franco Berti

Lucio Spelta

Daniele Dreoni

Nicola Casilli

Carlo Fusi

Guido Spano

Marcella Notari

Giovanni Antonio Fois

Guido Spano'

The invention relates to a new process which allows the preparation of TS-1 zeolites in a pure phase and with a crystallinity higher than 95%, operating at reduced reaction volumes, and obtaining high productivities and extremely high crystallization yields. The particular crystalline form of the TS-1 zeolite thus prepared, is also described.

Process for the preparation of TS-1 zeolites

A process is described for the preparation of phenol by the hydrodeoxygenation of polyhydroxylated benzene derivatives or by the selective hydroxylation of benzene under depletive conditions, characterized in that the above-mentioned reactions are carried out in the presence of a catalyst based on multi component metal oxides comprising at least one metal selected from the groups VB, VIB, VIII, IB, IIB, IVA, VA.

Process for the preparation of phenol

The present invention relates to a new zeolite having a beta-type crystalline structure, characterized by a distribution of the Lewis acid sites and Br&#xf8;nsted acid sites corresponding to a molar ratio [Lewis sites] [Br&#xf8;nsted sites] equal to or higher than 1.5. This new zeolite is useful in preparation processes of alkylated aromatic hydrocarbons through the alkylation and/or transalkylation of aromatic compounds. The preparation method of the new zeolite is also object of the present invention.

Catalyst and process for the preparation of alkylated aromatic hydrocarbons

The invention relates to a multi-step chemical transformation process for the production of 2,6-dimethylnaphthalene starting from one or more naphthalene hydrocarbons or hydrocarbon blends containing the same, one or more benzene hydrocarbons and, optionally, a methylating agent reacted in the presence of a catalyst containing a zeolite belonging to the MTW structural group, where hydrogen is fed in at least one of the steps.

Process for the production of 2,6-dimethylnaphthalene

The invention relates to the use of dialkyl carbonates as solvents for expanded polystyrene and to a new process for the recycling of expanded polystyrene. Said process comprises the volume reduction of expanded polystyrene by dissolution with a dialkyl carbonate, or a blend of dialkyl carbonates, the removal of the insoluble components by filtration, the selective precipitation of polystyrene with a non-solvent or a blend of non-solvents, the separation, drying and extrusion of the precipitated polystyrene. This process allows the recovery of pure polystyrene without altering its properties.

Use of dialkyl carbonates as solvents for expanded polystyrene

The present invention relates to the use of a mixture, comprising one or more alkyl esters of fatty acids and one or more esters of fatty acids of glycerol carbonate, as a fuel or solvent.

Use of a mixture of esters of fatty acids as fuel or solvent

The invention relates to an enhanced process for the recycling of expanded polystyrene. Said process essentially comprises the reduction in volume of expanded polystyrene by means of dissolution in a solvent, separation of the insoluble components, selective precipitation of the polystyrene with an anti-solvent, separation, drying and extrusion of the precipitated polystyrene, recovery by distillation and recycling of the solvent. The process is characterized in that the anti-solvent is a butanol selected form n-butanol, iso-butanol or sec-butanol and the solvent is dimethyl carbonate, alone or in a mixture containing up to 25% by weight of butanol.

Process for the recycling of expanded polystyrene

Process for preparing alkylated aromatic compounds which comprises reacting an aromatic compound with a ketone and hydrogen in the presence of a catalytic composition comprising a solid acid material and copper. A preferred aspect is to use a catalytic composition also containing one or more elements selected from elements of groups IIIA, IVA, IIIB, IVB, VB, VIB, VIIB, group VIII limited to Fe, Ru and Os, and of the series of lanthanides. A particularly preferred aspect is to use a catalytic composition containing one or more elements selected from elements of groups IIIA and VIB.

Process for the alkylation of aromatic compounds

The invention relates to the use of a mixture, comprising one or more alkyl esters of fatty acids and one or more esters of fatty acids of glycerol carbonate, as a fuel or solvent.

A method is described for the preparation of 1-octene starting from butadiene, wherein in a first step (a) the bis-hydrodimerization of butadiene to 1,7-octadiene is effected in the presence of a catalyst based on palladium containing one or more tri-substituted monodentate phosphines, in an aprotic polar solvent, in a second step (b) the partial catalytic hydrogenation of 1,7-octadiene to 1-octene is effected in the presence of a titanium compound activated with one or more metal alkyls of group 13 (selected from boron, aluminum, gallium, indium).

Process for producing 1-octene from butadiene in the presence of titanium catalysts

Process in two steps for the preparation of 1-octene starting from butadiene which comprises: a first step (a) in which the bis-hydrodimerization of butadiene to 1,7-octadiene is effected in the presence of a catalyst based on a palladium complex containing one or more tri-substituted monodentate phosphines, in an aprotic polar solvent optionally containing an organic base; a second step (b) in which the partial catalytic hydrogenation of 1,7-octadiene to 1-octene is effected, the above process being characterized in that: (i) in the first step the aprotic polar solvent is selected from disubstituted cyclic ureas; (ii) in the second step the catalyst is selected from non supported ruthenium complexes having general formula (II): RuXL(II).

Process for the preparation of 1-octene

A process is described for the synthesis of mesitylene, characterized in that mesitylene is obtained starting exclusively from pseudocumene, without the use of any other chemical compound, operating in continuous, at a temperature ranging from 225 to 400&#xb0; C., at a pressure ranging from 1 to 50 bar, at a weight space velocity ranging from 0.1 to 10 hours, and in the presence of a catalyst containing a zeolite selected from ZSM-5 zeolite having a crystal lattice based on silicon oxide and aluminum oxide, and ZSM-5 zeolite modified by the partial or total substitution of Si with a tetravalent element such as Ti or Ge and/or the partial or total substitution of Al with other trivalent elements, such as Fe, Ga or B.

Process for the production of mesitylene

Process for the production of concentrated aqueous solutions of hydrogen peroxide, comprising the following steps: (a) feeding to a reactor containing a catalyst based on palladium and platinum, heterogeneous and maintained in dispersion in a liquid reaction medium: (i) a liquid stream consisting of an alcohol or a mixture of C1&#x2013;C3 alcohols or a mixture of said alcohols with water containing at least 50% by weight of alcohol, also containing an acid promoter and a halogenated promoter, the alcohol and optionally all or part of the water contained in the stream being recycled from the subsequent phase d); (ii) a gaseous stream containing hydrogen, oxygen and an inert gas, characterized in that the concentration of the hydrogen is less than 4.5% by volume and the concentration of the oxygen is less than 21% by volume, the complement to 100 being an inert gas; (b) removing from the reactor: (iii) a liquid stream consisting of stream (i) and also containing the hydrogen peroxide and water produced by the reaction, characterized in that the concentration of hydrogen peroxide ranges from 2% to 10% by weight; and (iv) a gaseous stream essentially consisting of non-reacted hydrogen and oxygen and the inert gas, (c) optionally adding to (iii) water in such a quantity so that its content is at least equal to that of the final aqueous solution of hydrogen peroxide; (d) sending the stream deriving from (c) to a system consisting of one or more evaporators or distillation columns from which the following are removed: (v) one or more streams containing all the alcohol and possibly water, which are recycled to (a); (vi) a concentrated aqueous solution of H2O2 at a concentration ranging from 15 to 60% by weight; (vii) optionally a stream containing the water fed in excess in (c).

Process for the production of hydrogen peroxide

Integrated process for the preparation of aromatic isocyanates comprising: the reaction between an aromatic amine and an organiccarbonate in the presence of a catalyst selected from organic and inorganic salts of a metal selected from Zn, Sn, Pb, Cu; the removal of the catalyst; the passivation of the quantity of residual metal in the urethane formed in step a); the removal of the organic solvent and its optional recycling to step a) of the reaction; the evaporation of the aromatic urethane with partial pyrolysis; the complete pyrolysis of the urethane in gas phase; the recovery of the isocyanate.

Integrated process for the preparation of aromatic isocyanates and procedures for effecting the relative intermediate phases

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Milan, Italy

Franco Rivetti