Patents Assigned to SUD Chemie MT S.R.L.
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Patent number: 8574450Abstract: Highly pure iron oxides are prepared by reaction of metallic iron, in the form of microspheroidal particles or of scraps or cuttings, with an agitated aqueous solution of a mono- or polycarboxylic acid with a pKa of 0.5 to 6 relative to the first carboxyl and capable of decomposing, by heating in air at 200 to 350° C., to carbon dioxide and water, using 0.03 to 1.5 moles of acid per g-atoms of iron, a water/iron weight ration of 1 to 20, and by oxidation of the ferrous carboxilate to ferric salt, with an agent selected from oxygen, mixtures containing oxygen, hydrogen peroxide, organic peroxides and hydroperoxides.Type: GrantFiled: May 24, 2011Date of Patent: November 5, 2013Assignee: SUD Chemie MT S.r.l.Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
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Publication number: 20110251054Abstract: Highly pure iron oxides are prepared by reaction of metallic iron, in the form of microspheroidal particles or of scraps or cuttings, with an agitated aqueous solution of a mono- or polycarboxylic acid with a pKa of 0.5 to 6 relative to the first carboxyl and capable of decomposing, by heating in air at 200 to 350° C., to carbon dioxide and water, using 0.03 to 1.5 moles of acid per g-atoms of iron, a water/iron weight ration of 1 to 20, and by oxidation of the ferrous carboxilate to ferric salt, with an agent selected from oxygen, mixtures containing oxygen, hydrogen peroxide, organic peroxides and hydroperoxides.Type: ApplicationFiled: May 24, 2011Publication date: October 13, 2011Applicant: SUD Chemie MT S.r.l.Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
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Publication number: 20090324487Abstract: Highly pure iron oxides are prepared by reaction of metallic iron, in the form of microspheroidal particles or of scraps or cuttings, with an agitated aqueous solution of a mono- or polycarboxylic acid with a pKa of 0.5 to 6 relative to the first carboxyl and capable of decomposing, by heating in air at 200 to 350° C., to carbon dioxide and water, using 0.03 to 1.5 moles of acid per g-atoms of iron, a water/iron weight ration of 1 to 20, and by oxidation of the ferrous carboxilate to ferric salt, with an agent selected from oxygen, mixtures containing oxygen, hydrogen peroxide, organic peroxides and hydroperoxides.Type: ApplicationFiled: July 11, 2008Publication date: December 31, 2009Applicant: SUD Chemie MT S.r.l.Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
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Patent number: 7442362Abstract: Highly pure iron oxides are prepared by reaction of metallic iron, in the form of microspheroidal particles or of scraps or cuttings, with an agitated aqueous solution of a mono- or polycarboxylic acid with a pKa of 0.5 to 6 relative to the first carboxyl and capable of decomposing, by heating in air at 200 to 350 ° C., to carbon dioxide and water, using 0.03 to 1.5 moles of acid per g-atoms of iron, a water/iron weight ration of 1 to 20, and by oxidation of the ferrous carboxilate to ferric salt, with an agent selected from oxygen, mixtures containing oxygen, hydrogen peroxide, organic peroxides and hydroperoxides.Type: GrantFiled: April 30, 2004Date of Patent: October 28, 2008Assignee: Sud Chemie MT S.r.l.Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
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Patent number: 6833125Abstract: Oxidation catalysts for used in the full oxidation to CO2 and H2O of volatile organic compounds, such as hydrocarbons, comprising mixed oxides of copper, manganese and one or more rare-earth metals, wherein the metals can assume multiple valency states, having a percentage composition by weight, expressed as CuO, MnO and rare-earth oxides, in which the metal has the minimum value of 8-50%, 10-75% and 2-15%, respectively. The oxides are supported on inert porous inorganic oxides.Type: GrantFiled: December 8, 2003Date of Patent: December 21, 2004Assignee: SUD Chemie MT. S.r.l.Inventors: Alberto Cremona, Carlo Rubini, Edoardo Vogna
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Patent number: 6818581Abstract: A method for denitrification of water, in which the water to be denitrified is made to flow over a porous carrier which comprises a transition metal, preferably palladium, used in an amount between 0.01 and 5% by weight on the carrier and on which denitrifying bacterial strains capable of surviving in the presence of hydrogen are made to adhere, and in which hydrogen is used as a reducing agent and the pH of the reaction is adjusted to values of 4.5 to 7.8 preferably by using carbon dioxide.Type: GrantFiled: October 30, 2003Date of Patent: November 16, 2004Assignee: SUD Chemie MT S.r.l.Inventors: Antonio Pasquale, Carlo Rubini, Michele Rossi, Luigi Cavalli
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Publication number: 20040202606Abstract: Highly pure iron oxides are prepared by reaction of metallic iron, in the form of microspheroidal particles or of scraps or cuttings, with an agitated aqueous solution of a mono- or polycarboxylic acid with a pKa of 0.5 to 6 relative to the first carboxyl and capable of decomposing, by heating in air at 200 to 350° C., to carbon dioxide and water, using 0.03 to 1.5 moles of acid per g-atoms of iron, a water/iron weight ration of 1 to 20, and by oxidation of the ferrous carboxilate to ferric salt, with an agent selected from oxygen, mixtures containing oxygen, hydrogen peroxide, organic peroxides and hydroperoxides.Type: ApplicationFiled: April 30, 2004Publication date: October 14, 2004Applicant: SUD Chemie MT S.r.l.Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
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Publication number: 20040192978Abstract: Catalysts for oxychlorination of ethylene to 1,2-dichloroethane, comprising compounds of copper and magnesium supported on alumina, in which the copper, expressed as metal, is present in an amount of 7 to 12% by weight and the Mg/Cu ratio is 0.05 to 1, and wherein the ratio between the concentration of copper provided by the Al/Cu ratio at the surface and that provided by the Al/Cu ratio in the entire particle of the catalyst is from 0.8 to 1.3.Type: ApplicationFiled: March 3, 2004Publication date: September 30, 2004Applicant: SUD Chemie MT S.R.L.Inventors: Francesco Casagrande, Carlo Orsenigo
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Patent number: 6759365Abstract: Catalysts for the oxychlorination of ethylene to 1,2-dichloroethylene, comprising compounds of Cu and Mg supported on alumina, in which the copper content, expressed as Cu, is 2 to 8% by weight, the Mg/Cu atomic ratio is from 1.2 to 2.5, and the specific surface of the catalyst is from 30 to 130 m2/g.Type: GrantFiled: October 22, 2002Date of Patent: July 6, 2004Assignee: SUD Chemie Mt S.r.l.Inventors: Luigi Cavalli, Francesco Casagrande
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Publication number: 20040118759Abstract: A method for denitrification of water, in which the water to be denitrified is made to flow over a porous carrier which comprises a transition metal, preferably palladium, used in an amount between 0.01 and 5% by weight on the carrier and on which denitrifying bacterial strains capable of surviving in the presence of hydrogen are made to adhere, and in which hydrogen is used as a reducing agent and the pH of the reaction is adjusted to values of 4.5 to 7.8 preferably by using carbon dioxide.Type: ApplicationFiled: October 30, 2003Publication date: June 24, 2004Applicant: SUD Chemie MT S.R.L.Inventors: Antonio Pasquale, Carlo Rubini, Michele Rossi, Luigi Cavalli
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Publication number: 20040121904Abstract: Oxidation catalysts usable in particular in the full oxidation to CO2 and H2O of volatile organic compounds such as hydrocarbons comprising mixed oxides of copper, manganese and one or more rare-earth metals, wherein the metals can assume multiple valency states, having a percentage composition by weight, expressed as CuO, MnO and rare-earth oxides, in which the metal has the minimum value of 8-50%, 10-75% and 2-15%. The oxides are supported on inert porous inorganic oxides.Type: ApplicationFiled: December 8, 2003Publication date: June 24, 2004Applicant: SUD CHEMIE MT. S.R.L.Inventors: Alberto Cremona, Carlo Rubini, Edoardo Vogna
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Patent number: 6683021Abstract: Oxidation catalysts useful in the oxidation to CO2 and H2O of volatile organic compounds such as hydrocarbons comprising mixed oxides of copper, manganese and one or more rare-earth metals, wherein the metals can assume multiple valency states, having a percentage composition by weight, expressed as CuO, MnO and rare-earth oxides, in which the metal has the minimum value of 8-50%, 10-75% and 2-15%. The oxides are supported on inert porous inorganic oxides.Type: GrantFiled: October 1, 2001Date of Patent: January 27, 2004Assignee: SUD Chemie MT. S.R.L.Inventors: Alberto Cremona, Carlo Rubini, Edoardo Vogna
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Patent number: 6669847Abstract: A method for denitrification of water, in which the water to be denitrified is made to flow over a porous carrier which comprises a transition metal, preferably palladium, used in an amount between 0.01 and 5% by weight on the carrier and on which denitrifying bacterial strains capable of surviving in the presence of hydrogen are made to adhere, and in which hydrogen is used as a reducing agent and the pH of the reaction is adjusted to values of 4.5 to 7.8 preferably by using carbon dioxide.Type: GrantFiled: July 20, 2001Date of Patent: December 30, 2003Assignee: Sud Chemie MT S.r.l.Inventors: Antonio Pasquale, Carlo Rubini, Michele Rossi, Luigi Cavalli
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Patent number: 6627777Abstract: Catalysts for the fluid-bed hydrodechlorination of carbon tetrachloride to chloroform having high catalytic stability and comprising platinum supported on microspheroidal gamma alumina, characterized in that the platinum is in the form of particles dispersed throughout the mass of the support.Type: GrantFiled: October 9, 2001Date of Patent: September 30, 2003Assignee: Sud Chemie MT S.R.L.Inventors: Michele Rossi, Carlo Rubini, Antonio Pasquale, Luigi Cavalli
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Patent number: 6593269Abstract: Catalysts for exothermic reactions conducted in a fixed bed, comprising an inert diluent constituted by metal granules in which the metal has a thermal conductivity of more than 0.5 W/cm/K, particularly catalysts for the oxychlorination of ethylene to 1,2-dichloroethane.Type: GrantFiled: January 3, 2000Date of Patent: July 15, 2003Assignee: Sud Chemie MT S.R.L.Inventors: Carlo Rubini, Marinella Malentacchi
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Publication number: 20030096700Abstract: Catalysts for the oxychlorination of ethylene to 1,2-dichloroethylene, comprising compounds of Cu and Mg supported on alumina, in which the copper content, expressed as Cu, is 2 to 8% by weight, the Mg/Cu atomic ratio is from 1.2 to 2.5, and the specific surface of the catalyst is from 30 to 130 m2/g.Type: ApplicationFiled: October 22, 2002Publication date: May 22, 2003Applicant: Sud Chemie Mt S.R.L.Inventors: Luigi Cavalli, Francesco Casagrande
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Publication number: 20020064492Abstract: Oxidation catalysts usable in particular in the full oxidation to CO2 and H2O of volatile organic compounds such as hydrocarbons comprising mixed oxides of copper, manganese and one or more rare-earth metals, wherein the metals can assume multiple valency states, having a percentage composition by weight, expressed as CuO, MnO and rare-earth oxides, in which the metal has the minimum value of 8-50%, 10-75% and 2-15%. The oxides are supported on inert porous inorganic oxides.Type: ApplicationFiled: October 1, 2001Publication date: May 30, 2002Applicant: SUD CHEMIE MT S.R.L.Inventors: Alberto Cremona, Carlo Rubini, Edoardo Vogna
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Patent number: 6184174Abstract: Catalysts for dehydrogenating ethylbenzene to styrene which comprise iron oxide, oxides of alkaline and alkaline-earth metals, oxides of the lanthanide series, oxides of metals of the sixth group, prepared from a paste of iron oxide impregnated with an aqueous solution of a cerium salt, treated with aqueous KOH and calcined, after drying, to preform potassium ferrate, to which the other components or precursors of the catalyst are then added.Type: GrantFiled: May 19, 1999Date of Patent: February 6, 2001Assignee: SUD Chemie MT S.R.L.Inventors: Carlo Rubini, Luigi Cavalli, Esterino Conca
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Patent number: 6066589Abstract: Hydrogenation catalysts comprising metallic palladium supported on activated carbon, wherein less than 50% by weight of the palladium is comprised within a surface layer with a depth of up to 50 microns, the remainder being comprised in a layer between 50 and 400 microns deep. The catalysts can be used in particular in purifying terephthalic acid obtained by oxidation of p-xylene.Type: GrantFiled: May 19, 1998Date of Patent: May 23, 2000Assignee: Sud Chemie MT. S.r.l.Inventors: Marinella Malentacchi, Luigi Cavalli, Carlo Rubini