Patents by Inventor Leonardo Dalloro
Leonardo Dalloro 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: 8247622Abstract: A process is described for the preparation of phenol by the hydrodeoxygenation of polyhydroxylated benzene derivatives or by the selective hydroxylation of benzene under depletive conditions, characterized in that the above-mentioned reactions are carried out in the presence of a catalyst based on multi component metal oxides comprising at least one metal selected from the groups VB, VIB, VIII, IB, IIB, IVA, VA.Type: GrantFiled: October 20, 2010Date of Patent: August 21, 2012Assignee: Polimeri Europa S.p.A.Inventors: Leonardo Dalloro, Alberto Cesana, Roberto Buzzoni, Fausto Genoni, Guido Spano, Franco Rivetti
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Publication number: 20110092746Abstract: A process is described for the preparation of phenol by the hydrodeoxygenation of polyhydroxylated benzene derivatives or by the selective hydroxylation of benzene under depletive conditions, characterized in that the above-mentioned reactions are carried out in the presence of a catalyst based on multi component metal oxides comprising at least one metal selected from the groups VB, VIB, VIII, IB, IIB, IVA, VA.Type: ApplicationFiled: October 20, 2010Publication date: April 21, 2011Applicant: POLIMERI EUROPA S.p.A.Inventors: Leonardo DALLORO, Alberto Cesana, Roberto Buzzoni, Fausto Genoni, Guido Spano, Franco Rivetti
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Patent number: 7868210Abstract: A process is described for the preparation of phenol by the hydrodeoxygenation of polyhydroxylated benzene derivatives or by the selective hydroxylation of benzene under depletive conditions, characterized in that the above-mentioned reactions are carried out in the presence of a catalyst based on multi component metal oxides comprising at least one metal selected from the groups VB, VIB, VIII, IB, IIB, IVA, VA.Type: GrantFiled: January 10, 2006Date of Patent: January 11, 2011Assignee: Polimeri Europa S.p.A.Inventors: Leonardo Dalloro, Alberto Cesana, Roberto Buzzoni, Fausto Genoni, Guido Spano′, Franco Rivetti
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Patent number: 7547778Abstract: The present invention relates to a process for the preparation of zeolitic catalysts of the MFI type in spheroidal form. The process consists in emulsifying and consolidating in paraffinic hydrocarbons, in the presence of a non-ionic surface-active agent or a suitable combination of a non-ionic surface-active agent and a cationic surface-active agent, a dispersion of particles of zeolitic material of the MFI type in a silica sol.Type: GrantFiled: March 29, 2007Date of Patent: June 16, 2009Assignee: Polimeri Europa S.p.A.Inventors: Luigi Balducci, Leonardo Dalloro, Alberto Cesana, Roberto Buzzoni
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Publication number: 20080132735Abstract: A process is described for the preparation of phenol by the hydrodeoxygenation of polyhydroxylated benzene derivatives or by the selective hydroxylation of benzene under depletive conditions, characterized in that the above-mentioned reactions are carried out in the presence of a catalyst based on multi component metal oxides comprising at least one metal selected from the groups VB, VIB, VIII, IB, IIB, IVA, VA.Type: ApplicationFiled: January 10, 2006Publication date: June 5, 2008Applicant: POLIMERI EUROPA S.p.A.Inventors: Leonardo Dalloro, Alberto Cesana, Roberto Buzzoni, Fausto Genoni, Guido Spano, Franco Rivetti
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Publication number: 20070267324Abstract: The invention relates to a process for the production of linear alkanes, containing less than 6? carbon atoms, from a mix comprising one or more hydrocarbons containing at least 6 carbon atoms. The process uses a catalytic composition comprising particular combinations of a Y-type zeolite, at least one element selected from Zn, Mo, Cu, Ga, In, W, Ta, Zr, Ti, metals of Group VIII and optionally one or more lanthanides.Type: ApplicationFiled: February 4, 2005Publication date: November 22, 2007Applicant: Polimeri Europa S. p. A.Inventors: Leonardo Dalloro, Alberto Cesana, Roberto Buzzoni, Franco Rivetti
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Publication number: 20070173644Abstract: The present invention relates to a process for the preparation of zeolitic catalysts of the MFI type in spheroidal form. The process consists in emulsifying and consolidating in paraffinic hydrocarbons, in the presence of a non-ionic surface-active agent or a suitable combination of a non-ionic surface-active agent and a cationic surface-active agent, a dispersion of particles of zeolitic material of the MFI type in a silica sol.Type: ApplicationFiled: March 29, 2007Publication date: July 26, 2007Applicant: POLIMERI EUROPA S.p.A.Inventors: Luigi Balducci, Leonardo Dalloro, Alberto Cesana, Roberto Buzzoni
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Patent number: 7214637Abstract: The present invention relates to a process for the preparation of zeolitic catalysts of the MFI type in spheroidal form. The process consists in emulsifying and consolidating in paraffinic hydrocarbons, in the presence of a non-ionic surface-active agent or a suitable combination of a non-ionic surface-active agent and a cationic surface-active agent, a dispersion of particles of zeolitic material of the MFI type in a silica sol.Type: GrantFiled: September 21, 2004Date of Patent: May 8, 2007Assignee: Polimeri Europa S.p.A.Inventors: Luigi Balducci, Leonardo Dalloro, Alberto Cesana, Roberto Buzzoni
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Patent number: 7157397Abstract: A process is described for the synthesis of mesitylene, characterized in that mesitylene is obtained starting exclusively from pseudocumene, without the use of any other chemical compound, operating in continuous, at a temperature ranging from 225 to 400° C., at a pressure ranging from 1 to 50 bar, at a weight space velocity ranging from 0.1 to 10 hours?1, and in the presence of a catalyst containing a zeolite selected from ZSM-5 zeolite having a crystal lattice based on silicon oxide and aluminum oxide, and ZSM-5 zeolite modified by the partial or total substitution of Si with a tetravalent element such as Ti or Ge and/or the partial or total substitution of Al with other trivalent elements, such as Fe, Ga or B.Type: GrantFiled: February 26, 2004Date of Patent: January 2, 2007Assignees: Polimeri Europa S.p.A., Enitecnologie S.p.A.Inventors: Leonardo Dalloro, Alberto Cesana, Robert{dot over (o)} Buzzoni, Franco Rivetti, Giovanni Antonio Fois, Caterina Rizzo, Virginio Arrigoni
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Patent number: 7038093Abstract: The invention relates to a process for the preparation of phenol comprising the following phases: 1) preparation in continuous of phenol by means of the direct oxidation of benzene with hydrogen peroxide operating with an H2O2/benzene ratio ranging from 10 to 70%, in a three-phase reaction system comprising a first liquid phase consisting of benzene and an organic solvent, a second liquid phase consisting of water, a solid phase consisting of an activated catalyst based on titanium silicalite TS-1; 2) separation of the phenol and non-reacted benzene from the reaction mixture of the oxidation section (1), by means of fractionated distillation; 3) separation of the solvent and by-products from the mixture coming from the distillation tail (2), by means of basic extraction; 4) transformation of the by-products obtain in section (3) to phenol by means of hydrodeoxygenation with hydrogen operating in continuous, in aqueous solution, at a temperature ranging from 250 to 500° C.Type: GrantFiled: November 20, 2003Date of Patent: May 2, 2006Assignee: Polimeri Europa S.p.A.Inventors: Daniele Bianchi, Rossella Bortolo, Roberto Buzzoni, Alberto Cesana, Leonardo Dalloro, Rino D'Aloisio
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Patent number: 6949687Abstract: A process is described for the contemporaneous preparation of mesitylene and durene, characterized in that mesitylene and durene are obtained exclusively starting from pseudo-cumene without the use of any further chemical compound, operating in continuous, at a temperature ranging from 210 to 400° C., at a pressure ranging from 1 to 50 bar, with a weight space velocity ranging from 0.1 to 20 hours?1 and in the presence of a catalyst based on crystalline metal-silicates in acid form. After the recovery of mesitylene and durene from the reaction raw product, some of the remaining components of the raw product itself are recycled and fed to the reactor together with the pseudo-cumene.Type: GrantFiled: December 17, 2003Date of Patent: September 27, 2005Assignees: Polimeri Europa S.p.A., Enitecnologie S.p.A.Inventors: Leonardo Dalloro, Alberto Cesana, Roberto Buzzoni, Franco Rivetti, Caterina Rizzo, Virginio Arrigoni, Carlo Perego
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Patent number: 6936738Abstract: A process is described for the preparation of phenol characterized in that the phenol is obtained by means of the hydrodeoxygenation of benzene-diols with hydrogen, operating in continuous, in an aqueous solution, at temperatures ranging from 250 to 500° C., at pressures of 1-100 bar and in the presence of a catalyst based on elements of group VIB or group VIII of the periodic table.Type: GrantFiled: October 14, 2003Date of Patent: August 30, 2005Assignees: ENI S.p.A., Polimeri Europa S.p.A.Inventors: Leonardo Dalloro, Alberto Cesana, Roberto Buzzoni, Franco Rivetti
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Publication number: 20050032630Abstract: The present invention relates to a process for the preparation of zeolitic catalysts of the MFI type in spheroidal form. The process consists in emulsifying and consolidating in paraffinic hydrocarbons, in the presence of a non-ionic surface-active agent or a suitable combination of a non-ionic surface-active agent and a cationic surface-active agent, a dispersion of particles of zeolitic material of the MFI type in a silica sol.Type: ApplicationFiled: September 21, 2004Publication date: February 10, 2005Applicant: POLIMERI EUROPA S.p.A.Inventors: Luigi Balducci, Leonardo Dalloro, Alberto Cesana, Roberto Buzzoni
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Patent number: 6838406Abstract: The present invention relates to a process for the preparation of zeolitic catalysts of the MFI type in spheroidal form. The process consists in emulsifying and consolidating in paraffinic hydrocarbons, in the presence of a non-ionic surface-active agent or a suitable combination of a non-ionic surface-active agent and a cationic surface-active agent, a dispersion of particles of zeolitic material of the MFI type in a silica sol.Type: GrantFiled: November 18, 2002Date of Patent: January 4, 2005Assignee: Polimeri Europa S.p.A.Inventors: Luigi Balducci, Leonardo Dalloro, Alberto Cesana, Roberto Buzzoni
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Publication number: 20040225170Abstract: A process is described for the synthesis of mesitylene, characterized in that mesitylene is obtained starting exclusively from pseudocumene, without the use of any other chemical compound, operating in continuous, at a temperature ranging from 225 to 400° C., at a pressure ranging from 1 to 50 bar, at a weight space velocity ranging from 0.1 to 10 hours−1, and in the presence of a catalyst containing a zeolite selected from ZSM-5 zeolite having a crystal lattice based on silicon oxide and aluminum oxide, and ZSM-5 zeolite modified by the partial or total substitution of Si with a tetravalent element such as Ti or Ge and/or the partial or total substitution of Al with other trivalent elements, such as Fe, Ga or B.Type: ApplicationFiled: February 26, 2004Publication date: November 11, 2004Applicants: POLIMERI EUROPA S.p.A., ENITECNOLOGIE S.p.A.Inventors: Leonardo Dalloro, Alberto Cesana, Roberto Buzzoni, Franco Rivetti, Giovanni Antonio Fois, Caterina Rizzo, Virginio Arrigoni
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Publication number: 20040127762Abstract: A process is described for the contemporaneous preparation of mesitylene and durene, characterized in that mesitylene and durene are obtained exclusively starting from pseudo-cumene without the use of any further chemical compound, operating in continuous, at a temperature ranging from 210 to 400° C., at a pressure ranging from 1 to 50 bar, with a weight space velocity ranging from 0.1 to 20 hours−1 and in the presence of a catalyst based on crystalline metal-silicates in acid form. After the recovery of mesitylene and durene from the reaction raw product, some of the remaining components of the raw product itself are recycled and fed to the reactor together with the pseudo-cumene.Type: ApplicationFiled: December 17, 2003Publication date: July 1, 2004Applicants: POLIMERI EUROPA S.p.A., ENITECNOLOGIE S.p.A.Inventors: Leonardo Dalloro, Alberto Cesana, Roberto Buzzoni, Franco Rivetti, Caterina Rizzo, Virginio Arrigoni, Carlo Perego
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Publication number: 20040122264Abstract: The invention relates to a process for the preparation of phenol comprising the following phases:Type: ApplicationFiled: November 20, 2003Publication date: June 24, 2004Applicant: POLIMERI EUROPA S.p.A.Inventors: Daniele Bianchi, Rossella Bortolo, Roberto Buzzoni, Alberto Cesana, Leonardo Dalloro, Rino D'Aloisio
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Patent number: 6734323Abstract: The present invention relates to a process for the preparation of zeolitic catalysts comprising zeolite and oligomeric silica, which can be used in industrial reactors. The process consists in directly mixing the suspension, resulting from the synthesis of the zeolite, with an oligomeric silica sol, obtained from the hydrolysis of a tetra-alkyl ortho silicate in the presence of tetra-alkylammonium hydroxide, and in subjecting the mixture to rapid drying, by feeding to a spray-dry.Type: GrantFiled: November 29, 2000Date of Patent: May 11, 2004Assignees: Enichem S.P.A., Enitecnologie S.P.A.Inventors: Giuseppe Botti, Angela Carati, Leonardo Dalloro
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Publication number: 20040077906Abstract: A process is described for the preparation of phenol characterized in that the phenol is obtained by means of the hydrodeoxygenation of benzene-diols with hydrogen, operating in continuous, in an aqueous solution, at temperatures ranging from 250 to 500° C., at pressures of 1-100 bar and in the presence of a catalyst based on elements of group VIB or group VIII of the periodic table.Type: ApplicationFiled: October 14, 2003Publication date: April 22, 2004Applicants: ENI S.p.A., POLIMERI EUROPA S.p.A.Inventors: Leonardo Dalloro, Alberto Cesana, Roberto Buzzoni, Franco Rivetti
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Patent number: 6645899Abstract: The present invention relates to a method for the removal of the templating agent from synthetic zeolites in general and in particular from silicalite, titanium silicalite and from composite materials containing zeolites and for their activation as catalysts. The method consists in treating the above materials with solvents in vapor phase and at a low temperature.Type: GrantFiled: November 15, 2000Date of Patent: November 11, 2003Assignee: Enichem S.p.A.Inventors: Stefano Palmery, Fausto Genoni, Guido Spano′, Leonardo Dalloro, Alberto Cesana, Roberto Buzzoni