Eniricerche S.p.a.

Snamprogetti S.p.a.

Agip Petroli S.p.a.

Snam S.p.a.

Eniricere S.p.a.

Laura Zanibelli

Giuseppe Bellussi

Cristina Flego

Carlo Perego

Alberto Del Bianco

Aldo Giusti

Thomas Paul Lockhart

Giampietro Piro

Federica Gagliardi

Disclosed is an active catalyst in the hydroisomerization of waxes (paraffins), which catalyst is constituted by a carrier of acidic nature, of silica-alumina gel, and one or more metals belonging to Group VIIIA. Also a process for preparing said catalyst is disclosed.

Catalyst for the hydroisomerization of long-chain n-paraffins and

Catalyst for the hydroisomerization of long-chain N-paraffins and

A difunctional catalyst is disclosed which is constituted by:

Wax hydroisomerization using a difunctional catalyst

Difunctional catalyst useful in wax hydroisomerization and process for

A catalyst is described for the preparation of isobutene by dehydroisomerization of n-butane consisting of a solid, granular support of porous gamma-alumina on the surface of which catalytic quantities of platinum, silica and preferably also one or more promotors are deposited. In a preferred form of embodiment this catalyst is used with a second catalyst which may be formed of Boralite B or a solid granular support of gamma-alumina on the surface of which catalytic quantities of silica are deposited. The present invention relates also to the process of dehydroisomerization of n-butane to isobutene in which the catalyst is used and the relative operating conditions.

Dehydroisomerisation catalyst and its use in the preparation of

A catalyst is described for the preparation of isobutene by dehydroisomerization of n-butane consisting of a solid, granular support of porous gamma-alumina on the surface of which catalytic quantities of platinum, silica and preferably also one or more promotors are deposited. In a preferred form of embodiment this catalyst is used with a second catalyst which may be formed of Boralite B or a solid granular support gamma-alumina on the surface of which catalytic quantities of silica are deposited. The present invention relates also to the process of dehydroisomerization of n-butane to isobutene in which the catalyst is used and the relative operating conditions.

Dehydroisomerization catalyst and its use in the preparation of

A nickel cermet contains 35-70% by weight of a metal nickel phase and 65-30% by weight of a zirconia phase stabilized in the cubic form with yttria, with, on X-ray diffraction analysis, said phases appearing as distinct and homogeneously distributed at a level lower than 1 .mu.m. This nickel cermet is obtained by preparing an aqueous solution containing a heat-decomposable zirconyl, yttrium and nickel salt, and an organic hydroxyacid or aminoacid, or a poly(acrylic acid); removing water from the resulting solution, under conditions of absence, or substantial absence, of decomposition phenomena, in order to separate a porous solid; calcining the porous solid, and reducing with hydrogen the product from calcination. The nickel cermet obtained in this way is useful as an anodic material for a solid oxide fuel cell (SOFC).

Nickel cermet, and process for preparing it

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Milan, Italy

Laura Zanibelli