Enichem S.p.a

Versalis S.p.a.

Polimeri Europa S.p.a.

Laura Meda

Piero Furlan

Vittorio Arca

Francesco Masi

Anna Sommazzi

Antonio Alfonso Proto

Roberto Buzzoni

Giuseppe Paparatto

Rino D'Aloisio

Giordano De Alberti

Roberto Fusco

Mario Polesello

Francesco Menconi

Giuseppe Conti

Angelo Boscolo Boscoletto

Tiziano Pennati

Nicola Fracasso

Tiziano (deceased) Pennati

Solid catalyst with a high thermal stability for the (co)polymerization of &#x3b1;-olefins, comprising titanium, magnesium, at least one metal selected from hafnium and zirconium, aluminum and chlorine, wherein at least 60% of the titanium is in oxidation state +3, and, when examined by means of XPS spectroscopy, has an absorption band characteristic of a binding energy ranging from 455 to 458 eV. Said catalyst, used in combination with a suitable co-catalyst in (co)polymerization processes of &#x3b1;-olefins at a high temperature, shows an improved productivity, a high incorporation of co-monomers in the copolymerization of ethylene and an increased thermal stability with respect to the systems so far in use.

Catalysts of the ziegler-natta type for the (co)polymerization of olefins with a high productivity

A process is described for the activation of zeolitic catalysts containing titanium having the formula: xTiO(1-x)SiOwherein x ranges from 0.0001 to 0.4, which consists in treating said materials with a solution of an ammonium salt of a carboxylic acid and subsequently subjecting them to calcination. The catalysts thus treated have higher catalytic performances with respect to those not treated, in oxidation processes of organic substrates.

Process for the activation of zeolitic catalysts containing titanium and their use in oxidation reactions

The present invention relates to a catalyst consisting of a metal of the VIII group supported on acid activated carbon functionalized with sulfonic groups, a process for the synthesis of hydrogen peroxide from hydrogen and oxygen which uses said catalyst and the use of the hydrogen peroxide solution in oxidation processes catalyzed by titanium-silicalite.

Catalyst, process for the production of hydrogen peroxide and its use in oxidation processes

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Galliate, Italy

Laura Meda