Patents by Inventor Oscar Cappellazzo
Oscar Cappellazzo 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).
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Patent number: 7718836Abstract: The present invention relates to an integrated process for the production of high purity 2,6-dimethylnaphthalene starting from hydrocarbon mixtures containing naphthalene and/or isomers of methylnaphthalene and/or isomers of dimethylnaphthalene and/or isomers of polymethylnaphthalene, and from an alkylating agent, preferably methanol, reacted in the presence of a methylated benzene solvent or mixture of various methylated benzene solvents, preferably selected from toluene, xylene and trimethylbenzene, and a catalyst consisting of ZSM-12 zeolite and an inorganic ligand.Type: GrantFiled: June 6, 2002Date of Patent: May 18, 2010Assignees: ENI S.p.A., Polimeri Europa S.p.A.Inventors: Gianni Girotti, Giuseppe Terzoni, Oscar Cappellazzo, Renzo Bignazzi, Giannino Pazzuconi
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Patent number: 6924247Abstract: The object of the present invention relates to a simple, rapid and inexpensive process for effecting solid-liquid separations in the case of zeolites, also having small crystals. This process, which is particularly useful for the recovery of zeolite crystals in suspension in the crystallization water, comprises treating this suspension of crystals with an acid or one of its precursors and subjecting the resulting mixture to filtration or decanting. According to a particular aspect of the invention, the crystalline phase is separated in a mixture with oxides which can be used as ligands. Said oxides can be generated by the reagents of the zeolite preparation reagent mixture, not transformed into crystalline phase during the synthesis hydrothermal treatment, or they can be added to the suspension of crystals before the separation treatment, or again they can be generated by precursors suitably added to the crystallization slurry.Type: GrantFiled: December 14, 2001Date of Patent: August 2, 2005Assignees: Eni S.p.A., Enichem S.p.A., Enitecnologie S.p.A.Inventors: Angela Carati, Giannino Pazzuconi, Carlo Perego, Oscar Cappellazzo, Gianni Girotti
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Publication number: 20030069459Abstract: The present invention relates to an integrated process for the production of high purity 2,6-dimethylnaphthalene starting from hydrocarbon mixtures containing naphthalene and/or isomers of methylnaphthalene and/or isomers of dimethylnaphthalene and/or isomers of polymethylnaphthalene, and from an alkylating agent, preferably methanol, reacted in the presence of a methylated benzene solvent or mixture of various methylated benzene solvents, preferably selected from toluene, xylene and trimethylbenzene, and a catalyst consisting of ZSM-12 zeolite and an inorganic ligand.Type: ApplicationFiled: June 6, 2002Publication date: April 10, 2003Applicant: ENI S.p.A.Inventors: Gianni Girotti, Giuseppe Terzoni, Oscar Cappellazzo, Renzo Bignazzi, Giannino Pazzuconi
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Patent number: 6512153Abstract: Process for the alkylation of aromatic compounds by the reaction of the aromatic compound of interest with isopropanol, alone or mixed with propylene, wherein the reaction is carried out in the presence of a catalytic composition based on zeolite, under mixed gas-liquid phase conditions or under completely liquid phase conditions, at such temperature and pressures that the concentration of water in the reaction liquid phase is not higher than 8,000 ppm w/w, regardless of the total water content present in the reaction mixture.Type: GrantFiled: July 7, 2000Date of Patent: January 28, 2003Assignee: Enichem S.p.A.Inventors: Oscar Cappellazzo, Gianni Girotti, Massimiliano Pollastri, Sergio Lombardini, Domenico Piccininno
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Publication number: 20020113015Abstract: The object of the present invention relates to a simple, rapid and inexpensive process for effecting solid-liquid separations in the case of zeolites, also having small crystals. This process, which is particularly useful for the recovery of zeolite crystals in suspension in the crystallization water, comprises treating this suspension of crystals with an acid or one of its precursors and subjecting the resulting mixture to filtration or decanting. According to a particular aspect of the invention, the crystalline phase is separated in a mixture with oxides which can be used as ligands. Said oxides can be generated by the reagents of the zeolite preparation reagent mixture, not transformed into crystalline phase during the synthesis hydrothermal treatment, or they can be added to the suspension of crystals before the separation treatment, or again they can be generated by precursors suitably added to the crystallization slurry.Type: ApplicationFiled: December 14, 2001Publication date: August 22, 2002Applicant: ENI S.p.A.Inventors: Angela Carati, Giannino Pazzuconi, Carlo Perego, Oscar Cappellazzo, Gianni Girotti
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Patent number: 6084143Abstract: A catalytic composition is described for the alkylation or transalkylation of aromatic compounds consisting of zeolite Beta, as such or modified by the isomorphic substitution of aluminium with boron, iron or gallium or by the introduction of alkaline/earth-alkaline metals following ion exchange processes, and of an inorganic ligand, wherein the extrazeolite porosity, i.e. the porosity obtained by adding the mesoporosity and macroporosity fractions present in the catalytic composition itself, is such as to be composed for a fraction of at least 25% of pores with a radius higher than 100 .ANG..Type: GrantFiled: July 15, 1998Date of Patent: July 4, 2000Assignee: Enichem Synthesis S.p.A.Inventors: Gianni Girotti, Oscar Cappellazzo
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Patent number: 6034291Abstract: A catalytic composition is described for the alkylation and/or transalkylation of aromatic hydrocarbons consisting of beta zeolite, as such or modified by the isomorphous substitution of aluminum with boron, iron or gallium or by the introduction of alkaline and/or earth alkaline metals following an ion-exchange process, and an inorganic ligand, wherein the extrazeolite porosity, i.e. the porosity obtained by adding the mesoporosity and macroporosity fractions present in the catalytic composition itself, is such that a fraction of at least 25% is composed of pores with a radius higher than 100 .ANG., said composition being characterized by a total volume of extrazeolitic pores greater than or equal to 0.80 ml/g.Type: GrantFiled: December 10, 1997Date of Patent: March 7, 2000Assignee: Enichem S.p.A.Inventors: Gianni Girotti, Oscar Cappellazzo, Elena Bencini, Giannino Pazzuconi, Carlo Perego
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Patent number: 5811612Abstract: A catalytic composition is described for the alkylation or transalkylation of aromatic compounds consisting of zeolite Beta, as such or modified by the isomorphic substitution of aluminium with boron, iron or gallium or by the introduction of alkaline/earth-alkaline metals following ion exchange processes, and of an inorganic ligand, wherein the extrazeolite porosity, i.e. the porosity obtained by adding the mesoporosity and macroporosity fractions present in the catalytic composition itself, is such as to be composed for a fraction of at least 25% of pores with a radius higher than 100 .ANG..Type: GrantFiled: June 7, 1995Date of Patent: September 22, 1998Assignee: Enichem Synthesis S.p.A.Inventors: Gianni Girotti, Oscar Cappellazzo
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Patent number: 5227568Abstract: A process of hydrodechlorination of effluents originating from the preparation of hydrocarbon resins is described, the effluents consisting of about 90% of unconverted monomers and containing between 600 and 2500 ppm of organic chlorine. Said hydrodechlorination process comprises subjecting the said effluents to hydrogenation at a temperature of between 200.degree. and 300.degree. C. in the presence of a catalyst, preferably consisting of Ni-Mo supported on .gamma.-Al.sub.2 O.sub.3.Type: GrantFiled: June 20, 1991Date of Patent: July 13, 1993Assignee: Enimont Anic S.r.l.Inventors: Gianfranco Biddau, Oscar Cappellazzo, Sergio E. Lai, Giuseppe Messina
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Patent number: 4954660Abstract: Linear olefins are converted into the corresponding secondary alcohols by treatment with methyl alcohol and a tertiary alcohol, in the presence of an acidic catalyst, at a temperature ranging from 120.degree. to 200.degree. C. The product mixture substantially consists of the desired secondary alcohol and of the methyl ether of the charged tertiary alcohol.The reaction products can be easily isolated by fractionation, or, in some instances, the liquid product mixture can be used as such.Of particular interest is the direct hydration of n-butenes using tert-butyl alcohol as the tertiary alcohol. The obtained product mixture can be used as such, as an additive to methanol-containing gasolines for internal combustion engines.Type: GrantFiled: October 28, 1988Date of Patent: September 4, 1990Assignee: Enichem Anic S.p.A.Inventors: Giuseppe Messina, Carmelo Nurra, Oscar Cappellazzo, Angelo Virdis, Loreno Lorenzoni