Patents by Inventor Carlo Perego

Carlo Perego has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5789336
    Abstract: Micro-mesoporous gel consisting of a silica matrix possibly wherein one or more metal oxides selected from transition metals or metals belonging to groups IIIA, IVA and VA are uniformly dispersed, characterized by a monomodal porosity distribution.
    Type: Grant
    Filed: January 11, 1995
    Date of Patent: August 4, 1998
    Assignee: Eniricerche S.p.A.
    Inventors: Giannino Pazzucconi, Gianluca Bassi, Roberto Millini, Carlo Perego, Giovanni Perego, Giuseppe Bellussi
  • Patent number: 5786290
    Abstract: A catalyst is disclosed which comprises a clay belonging to the family of smectites, containing multi-metal pillars, together with a process which uses such a catalyst for the alkylation of aromatic hydrocarbons by means of long chain linear olefins. The resulting alkyl-aromatic compounds are useful for preparing biodegradable synthetic detergents.
    Type: Grant
    Filed: October 20, 1995
    Date of Patent: July 28, 1998
    Assignee: Enichem Agusta S.p.A.
    Inventors: Giovanni Colombo, Stefano Amarilli, Imre Kiricsi, Carlo Perego
  • Patent number: 5767038
    Abstract: 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.
    Type: Grant
    Filed: August 28, 1995
    Date of Patent: June 16, 1998
    Assignee: Eniricerche S.p. A.
    Inventors: Carlo Perego, Laura Zanibelli, Cristina Flego, Alberto Del Bianco, Giuseppe Bellussi
  • Patent number: 5672799
    Abstract: Process for the preparation of cumene by the alkylation of benzene with propylene, catalyzed by zeolite Beta into which certain quantities of suitable alkaline, alkaline-earth or metallic cations have been introduced by ion exchange.
    Type: Grant
    Filed: July 17, 1996
    Date of Patent: September 30, 1997
    Assignees: Eniricerche S.p.A., Enichem Synthesis S.p.A.
    Inventors: Carlo Perego, Giannino Pazzuconi, Gianni Girotti, Giuseppe Terzoni
  • Patent number: 5659105
    Abstract: A process for the alkylation of aliphatic hydrocarbons with olefins catalyzed by a silica-based material, characterised in that the surface Si--OH groups of said silica are esterified with a fluoroalkylsulphonic acid of formula CF.sub.3 (CF.sub.2).sub.n SO.sub.3 H, where n is a whole number between 0 and 11, said material having a Hammett acidity Ho.ltoreq.-11.4.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: August 19, 1997
    Assignees: Eniricerche S.p.A., Agip Petroli S.p.A.
    Inventors: Mario Gabriele Clerici, Carlo Perego, Alberto de Angelis, Luciano Montanari
  • Patent number: 5625108
    Abstract: An amorphous, micro/mesoporous silica-alumina gel with controlled pore size, having a surface area of at least 500 m.sup.2 /g and with a molar ratio of SiO.sub.2 :Al.sub.2 O.sub.3 of at least 30:1, is prepared by hydrolysing and causing a tetra-alkyl ammonium hydroxide, an aluminum trialkoxide, and a tetra-alkyl orthosilicate to gelate, by operating at a temperature equal to, or higher than, the boiling temperature, under atmospheric pressure, of any alcohols which are developed as a by-product from said hydrolysis reaction, without said alcohols being removed, or being substantially removed, from the reaction media; and the so produced gel being dried and fired. So obtained gel is an active catalyst in hydrocarbon conversion reactions, in particular in light olefin isomerization and oligomerization processes, e.g., in propylene oligomerization processes to yield useful liquid hydrocarbons for gasoline and jet fuel formulation.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: April 29, 1997
    Assignees: Eniricerche S.p.A., AGIP Petroli S.p.A., Enichem Synthesis S.p.A.
    Inventors: Carlo Perego, Stefano Peratello, Roberto Millini
  • Patent number: 5608134
    Abstract: An improved process for preparing a difunctional catalyst active in the hydroisomerization of long-chain normal paraffins is disclosed, which is constituted by an amorphous silica-alumina gel and one or more metals belonging to Group VIIIA,
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: March 4, 1997
    Assignee: Eniricerche S.p.A.
    Inventors: Carlo Perego, Giuseppe Bellussi, Vincenzo Calemma
  • Patent number: 5602292
    Abstract: 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.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: February 11, 1997
    Assignee: Eniricerche S.p.A.
    Inventors: Carlo Perego, Laura Zanibelli, Cristina Flego, Alberto Del Bianco, Giuseppe Bellussi
  • Patent number: 5571762
    Abstract: A process for the alkylation of aliphatic hydrocarbons with olefins catalyzed by a silica-based material, characterised in that the surface Si--OH groups of said silica are esterified with a fluoroalkylsulphonic acid of formula CF.sub.3 (CF.sub.2).sub.n SO.sub.3 H, where n is a whole number between 0 and 11, said material having a Hammett acidity Ho.ltoreq.-11.4.
    Type: Grant
    Filed: August 1, 1994
    Date of Patent: November 5, 1996
    Assignees: Eniricerche S.p.A., AGIP Petroli S.p.A.
    Inventors: Mario G. Clerici, Carlo Perego, Alberto de Angelis, Luciano Montanari
  • Patent number: 5498811
    Abstract: Polymeric fuels are produced from saturated C.sub.4 hydrocarbons by a process comprising:(A) dehydroisomerizing a gas mixture comprising predominantly of n-butane and hydrogen in a catalytic reactor containing a catalyst (a) of platinum supported on alumina, whose surface is coated with silica, and, optionally, a solid acidic catalyst (b) selected from the group consisting of alumina, whose surface is coated with silica, and Boralite B, with an effluent being obtained which comprises a mixture of predominantly of unreacted n-butane, butenes and isobutene, all of which components of the mixture have a carbon atom content less than 5;(B) separating the mixture of olefins and parafins from hydrogen and aromatic byproducts; and(C) oligomerizing said mixture in the presence of a catalyst consisting of amorphous silica-alumina gel, as determined by X-rays, having a silica:alumina molar ratio within the range of 30:1 to 500:1, with a surface area of from 500 to 1000 m.sup.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: March 12, 1996
    Assignees: Eniricerche S.p.A., Enichem Synthesis S.p.A.
    Inventors: Carlo Perego, Stefano Peratelo
  • Patent number: 5444032
    Abstract: An improved process for preparing a difunctional catalyst active, in the hydroisomerization of long-chain normal paraffins is disclosed, which is constituted by an amorphous silica-alumina gel and one or more metals belonging to Group VIIIIA.
    Type: Grant
    Filed: September 21, 1993
    Date of Patent: August 22, 1995
    Assignee: Eniricerche S.p.A.
    Inventors: Carlo Perego, Giuseppe Bellussi, Vincenzo Calemma
  • Patent number: 5342814
    Abstract: The preparation is disclosed of an extruded catalyst based on a silica/alumina gel, which catalyst is particularly active in acid-catalyzed reactions, such as the oligomerization of light olefins, e.g., propylene.
    Type: Grant
    Filed: December 3, 1992
    Date of Patent: August 30, 1994
    Assignees: Eniricerche S.p.A., Euron S.p.A., Snamprogetti, S.p.A.
    Inventors: Stefano Peratello, Carlo Perego, Giuseppe Bellussi
  • Patent number: 5324878
    Abstract: Disclosed is a process for carrying out the selective dimerization of isobutene in order to produce alpha- and beta-di-isobutene dimer.sub.3, according to which process an isobutene stream is brought into contact, under dimerization conditions, with a solid silica gel/alumina catalyst which is amorphous when analyzed by X-ray diffraction, displays a molar ratio of SiO.sub.2 /Al.sub.2 O.sub.3 comprised within the range of from 30:1 to 500:1, has a surface-area comprised within the range of from 500 to 1000 m.sup.2 /g, a porosity of from 0.3 to 0.6 ml/g and an average pore diameter of approximately 10 .ANG. (.ANG.ngstrom), and is free from pores with a larger diameter than 30 .ANG..
    Type: Grant
    Filed: October 2, 1992
    Date of Patent: June 28, 1994
    Assignees: Eniricerche S.p.A., Euron S.p.A.
    Inventors: Maurizio Brunelli, Walter Castelvetro, Carlo Perego, Stefano Peratello