Polimeri Europa S.p.a.

Enichem S.p.a

Montedison S.p.a.

Enitecnologie S.p.a.

Other

Eni S.p.a.

Versalis S.p.a.

Leonardo Dalloro

Roberto Buzzoni

Alberto Cesana

Franco Rivetti

Luigi Balducci

Carlo Perego

Angela Carati

Giordano De Alberti

Stefano Palmery

Fausto Genoni

Guido Petrini

Virginio Arrigoni

Caterina Rizzo

Luciano Moreschini

Daniele Bianchi

Rino D'Aloisio

Rossella Bortolo

Romano Covini

Enrico Cavaterra

Guido Spano′

Giuseppe Botti

Guido Spano&prime;

Guido Spano

Giovanni Antonio Fois

Guido Spano'

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 process for the preparation of zeolitic catalysts of the MFI type in spheroidal form. The process consists in emulsifying and consolidating in paraffinic hydrocarbons, in the presence of a non-ionic surface-active agent or a suitable combination of a non-ionic surface-active agent and a cationic surface-active agent, a dispersion of particles of zeolitic material of the MFI type in a silica sol.

Process for the preparation of MFI-type zeolitic catalysts

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

The invention relates to a process for the preparation of phenol comprising the following phases:

Integrated process for the preparation of phenol from benzene with recycling of the by-products

A process is described for the contemporaneous preparation of mesitylene and durene, characterized in that mesitylene and durene are obtained exclusively starting from pseudo-cumene without the use of any further chemical compound, operating in continuous, at a temperature ranging from 210 to 400&#xb0; C., at a pressure ranging from 1 to 50 bar, with a weight space velocity ranging from 0.1 to 20 hoursand in the presence of a catalyst based on crystalline metal-silicates in acid form. After the recovery of mesitylene and durene from the reaction raw product, some of the remaining components of the raw product itself are recycled and fed to the reactor together with the pseudo-cumene.

Process for the production of mesitylene and durene

A process is described for the preparation of phenol characterized in that the phenol is obtained by means of the hydrodeoxygenation of benzene-diols with hydrogen, operating in continuous, in an aqueous solution, at temperatures ranging from 250 to 500&#xb0; C., at pressures of 1-100 bar and in the presence of a catalyst based on elements of group VIB or group VIII of the periodic table.

Process for the preparation of phenol by means of the hydrodeoxygenation of benzene-diols

The present invention relates to a process for the preparation of zeolitic catalysts comprising zeolite and oligomeric silica, which can be used in industrial reactors. The process consists in directly mixing the suspension, resulting from the synthesis of the zeolite, with an oligomeric silica sol, obtained from the hydrolysis of a tetra-alkyl ortho silicate in the presence of tetra-alkylammonium hydroxide, and in subjecting the mixture to rapid drying, by feeding to a spray-dry.

Process for the preparation of zeolitic catalysts

Method of the removal of the templating agent from synthetic zeolites

The present invention relates to a process for the preparation of catalysts suitable for the transposition reaction of oximes to amides. The process consists in englobing submicronic particles of MFI-type zeolites in a siliceous ligand substantially inactive in the above reactions.

Process for the preparation of catalysts based on MFI-type zeolite

Process for the preparation of amides via the catalytic rearrangement of oximes which comprises putting an oxime in vapor phase in contact with a catalyst selected from a mesoporous silica-alumina having a molar ratio SiO/Al.sub.2 O.sub.2 of between 20 and 1000, an average pore diameter of between 20 and 100 .ANG. and an X-ray diffraction pattern (XRD) from powders which, after calcination, has the deepest reflection at d-spacing of more than 18 .ANG. (2.theta.&lt;4.9.degree., CuK.alpha. radiation).

Process for the preparation of amides from oximes

Process for the preparation of caprolactam by the catalytic rearrangement of cyclohexanone oxime in which a vapour phase oxime is contacting a catalyst selected from an essentially amorphous, micro-mesoporous silica-alumina having a molar ratio SiO.sub.2 /Al.sub.2 O.sub.3 of 30 to 5000, a surface area of at least 500 m.sup.2 /g and a total pore volume of 0.3 to 1.3 ml/g.

Preparation of aliphatic alpha, beta-unsaturated carboxylic acids from the corresponding saturated acids by oxidative dehydrogenation, at a temperature between 250.degree. and 500.degree. C., in the presence of a catalyst of empirical formula: FeP.sub.x Me.sub.y Me'.sub.t O.sub.z wherein Me is at least one alkali or alkaline earth element, Me' is at least one element selected from the group consisting of Ni, Cu, Ce, Al, Zr, Hf and Pr, x is between 0.2 and 15, y is between 0.01 and 2, t is between 0.01 and 5 and z is such as to satisfy the valencies of the other elements.

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Bollate, Italy

Leonardo Dalloro