Montedison S.p.a.

Sud-chemie Inc.

Enichem S.p.a

Sud Chemie Mt S.r.l.

Enichem Anic S.r.l.

Ausimont

Montedipe

Sud Ehemie Mt S.r.l.

Guido Petrini

Esterino Conca

Carlo Rubini

Maria Angela Mantegazza

Romano Covini

Mario Padovan

Robert J O'Brien

Luciano Moreschini

Alberto Cesana

Leonardo Dalloro

Paolo Roffia

Enrico Cavaterra

Giancarlo Battiston

Samantha E Sargent

Giuseppe Bellussi

Angela Carati

Marco Foa

Andrea Gardano

Francesco Casagrande

Luigi Cavalli

X D Hu

Giordano De Alberti

Augusto Viola

Fausto Genoni

Giuseppe Leofanti

Xd Hu

Giordano DeAlberti

Richard Tuell

Riccardo Barisone

Lawrence Chapoy

Esternio Conca

Mario Cucchetto

Highly pure iron oxides are prepared by reaction of metallic iron, in the form of microspheroidal particles or of scraps or cuttings, with an agitated aqueous solution of a mono- or polycarboxylic acid with a pKa of 0.5 to 6 relative to the first carboxyl and capable of decomposing, by heating in air at 200 to 350&#xb0; C., to carbon dioxide and water, using 0.03 to 1.5 moles of acid per g-atoms of iron, a water/iron weight ration of 1 to 20, and by oxidation of the ferrous carboxilate to ferric salt, with an agent selected from oxygen, mixtures containing oxygen, hydrogen peroxide, organic peroxides and hydroperoxides.

Method for preparing iron oxides

A process for producing a high surface area iron material, comprising predominantly low crystalline iron oxides, starting with a low surface area iron metal is disclosed. The iron material of the present invention has a surface area of at least about 200 m/g, and is prepared via a method which comprises reacting a low surface area iron metal with oxygen and an organic acid. The high surface area iron material formed via this method is essentially free of contaminants.

Preparation of iron oxides

A method for producing a high surface area iron material starting with a low surface area iron metal is disclosed. The iron material of the present invention has a surface area of at least about 200 m/g, and is prepared via a method which comprises reacting a low surface area iron metal with oxygen and an organic acid. The high surface area iron material formed via this method is essentially free of contaminants.

High surface area iron material prepared from a low surface area iron metal precursor

Highly pure iron oxides are prepared by reaction of metallic iron, in the form of microspheroidal particles or of scraps or cuttings, with an agitated aqueous solution of a mono- or polycarboxylic acid with a pKa of 0.5 to 6 relative to the first carboxyl and capable of decomposing, by heating in air at 200 to 350 &#xb0; C., to carbon dioxide and water, using 0.03 to 1.5 moles of acid per g-atoms of iron, a water/iron weight ration of 1 to 20, and by oxidation of the ferrous carboxilate to ferric salt, with an agent selected from oxygen, mixtures containing oxygen, hydrogen peroxide, organic peroxides and hydroperoxides.

A Fischer-Tropsch catalyst comprising iron and at least one promoter is prepared via a method which comprises the preparation of a high purity iron precursor and which uses a nominal amount of water in the catalyst production. The catalyst particles prepared with the high purity iron precursor have an essentially spherical particle shape, a relatively narrow particle size distribution range, and a high surface area.

Fischer-tropsch catalyst prepared with a high purity iron precursor

A process is described for the preparation of zeolitic catalysts in the form of microspheres, comprising zeolite and oligomeric silica, characterized by a high mechanical resistance. The process consists in subjecting to rapid drying the suspension, to which tetra-alkylorthosilicate is optionally added, resulting from the synthesis of zeolite by hydrothermal treatment at autogenous pressure of the reagent mixture containing tetra-alkylammoniumhydroxide as templating agent, and subjecting the product resulting from the drying to calcination.

Process for preparing bound zeolites

Highly pure iron oxides are prepared by reaction of metallic iron, in the form of microspheroidal particles or of scraps or cuttings, with an agitated aqueous solution of a mono- or polycarboxylic acid with a pKa of 0.5 to 6 relative to the first carboxyl and capable of decomposing, by heating in air at 200 to 350&deg; C., to carbon dioxide and water, using 0.03 to 1.5 moles of acid per g-atoms of iron, a water/iron weight ration of 1 to 20, and by oxidation of the ferrous carboxilate to ferric salt, with an agent selected from oxygen, mixtures containing oxygen, hydrogen peroxide, organic peroxides and hydroperoxides.

Process for the production of oximes which comprises ammoximation of a carbonylic compound selected from acetophenone and cyclododecanone with H.sub.2 O.sub.2 and NH.sub.3 in the presence of a catalyst based on silicon, titanium and oxygen and a cocatalyst consisting of amorphous silica.

Catalytic process for the production of oximes

Direct catalytic process for the production of hydroxylamine by means of the oxidation of ammonia with H.sub.2 O.sub.2, wherein the catalyst is composed of silicon, titanium and oxygen and has a crystalline (as in the case of titanium-silicalites, for example) or amorphous structure.

Direct catalytic process for the production of hydroxylamine

Two-step process in the liquid phase for producing oximes at 60.degree.-100.degree. C. and 1.5-5 bars, which comprises:

Two-step process for liquid-phase production of oximes

The invention concerns a catalytic process for the manufacture of oximes by ammoximation of the corresponding carbonyl compounds, characterized in that the catalyst is a solid composition consisting of silicon, titanium and oxygen, chemically combined with each other, and in that the titanium amount, expressed as TiO.sub.2, ranges from 1 to 95% by weight, the XR diffractogam of said composition being a smooth-trend line (halo), typical of the amorphous solids.

Catalytic process for the manufacture of oximes

Process for the hydrogenation of bis-phenols by reacting bis-phenols with hydrogen in the presence of a catalytic system consisting of palladium supported on activated carbon.

Process for the hydrogenation of bis-phenols

Catalyst suitable for the oxidation of CH.sub.3 OH to CH.sub.2 O, comprising a mixture of a well known catalytic system, herein indicated as mixed oxides, based on FE.sub.2 (MoO.sub.4).sub.3 molybdenum trioxide (MoO.sub.3) with non-sintered of Fe.sub.2 O.sub.3 from 5 to 90% by weight of the sum of Fe.sub.2 O.sub.3 + mixed oxides, the surface area of the Fe.sub.2 O.sub.3 being from 1 to 10 m.sup.2 /g and the superficial area of the whole catalyst being from 1 to 6 m.sup.2 /g.

Catalyst suitable for the oxidation of methyl alcohol to formaldehyde

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.

Process for the production of methacrylic acid

A process is disclosed for the preparation of acrylic acid or methacrylic acid by reacting in vapor phase acrolein or methacrolein with molecular oxygen or with an oxygen-containing gas, at a temperature between 200.degree. and 350.degree. C., in the presence of a solid catalyst and with a contact time between 0.5 and 5 seconds, characterized in that said catalyst consists of molybdenum, vanadium, tungsten, one or more of the elements selected from the class consisting of silver, titanium, chromium, cerium, lanthanum and tantalum, and oyxgen chemically combined with the above-indicated elements, and wherein the atomic ratios between the various elements present in the catalyst are represented by the empirical formula:

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Galliate, Italy

Guido Petrini