Patents Assigned to Sud-Chemie Catalysts Italia S.R.L.
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Patent number: 8809224Abstract: A catalyst for removing nitrogen protoxide from gas mixtures which contain it, comprising mixed oxides of cobalt, manganese and rare earth metals having composition expressed as percentage by weight of CoO, MnO and transition metal oxide in the lowest state of valence as follows: MnO 38-56%, CoO 22-30%, rare earth metal oxide 22-32%.Type: GrantFiled: September 6, 2011Date of Patent: August 19, 2014Assignee: Sud-Chemie Catalysts Italia S.R.L.Inventors: Alberto Cremona, Marvin Estenfelder, Edoardo Vogna
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Patent number: 8513470Abstract: A process for the fixed bed oxidation of methanol to formaldehyde wherein the bed comprises at least two layers having different catalytic activity, wherein the layer of lower activity is comprised in the part of the bed from which the reactant gas mixture enters and its activity is calibrated so that the maximum hot spot temperature in the layer is comprised between 350° C. and 430° C. and is higher than the maximum hot spot temperature of the layer of greater activity formed by pure catalyst, and wherein during the period in which the situation of the maximum hot spot temperature of the layer of lower activity remains at the values cited above, the conversion of methanol is higher than 96% by mols.Type: GrantFiled: December 18, 2009Date of Patent: August 20, 2013Assignee: Süd-Chemie, Catalysts Italia S.r.l.Inventors: Marvin Estenfelder, Roberto Zaino
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Publication number: 20130172178Abstract: A catalyst for removing nitrogen protoxide from gas mixtures which contain it, comprising mixed oxides of cobalt, manganese and rare earth metals having composition expressed as percentage by weight of CoO, MnO and transition metal oxide in the lowest state of valence as follows: MnO 38-56%, CoO 22-30%, rare earth metal oxide 22-32%.Type: ApplicationFiled: September 6, 2011Publication date: July 4, 2013Applicant: SUD-CHEMIE CATALYSTS ITALIA S.R.L.Inventors: Alberto Cremona, Marvin Estenfelder, Edoardo Vogna
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Patent number: 7687429Abstract: Catalysts for oxychlorination of ethylene to 1,2-dichlorethane, comprising compounds of copper and magnesium supported on gamma alumina, wherein the copper, expressed as metal, is present in a quantity from 7 to 12% by weight and the Mg/Cu ratio is from 0.05 to 1, wherein the distribution of copper in the catalyst particle is such that the ratio X/Y between the concentration of the copper atoms on the surface given by the Al/Cu ratio (X) on the surface (20-30 nm layer) and the concentration given by the Al/Cu ratio (Y) referred to the entire particle is greater than 1.3 and can reach 3.Type: GrantFiled: November 23, 2005Date of Patent: March 30, 2010Assignee: Sud Chemie - Catalysts Italia S.R.L.Inventors: Francesco Casagrande, Carlo Orsenigo
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Patent number: 7572752Abstract: Process for preparing a catalyst for the oxidation of methanol to formaldehyde, comprising reacting iron powder and molybdenum trioxide in a Mo/Fe ratio from 1.5 to 5 in an aqueous suspension at temperatures from 20 to 100° C., and subsequently, optionally simultaneously, oxidizing the mixture with an oxidizing agent in a quantity equal to, or greater than the quantity required for the oxidation of the ferrous ion to ferric ion and to oxidize the molybdenum to the valence state 6.Type: GrantFiled: December 16, 2005Date of Patent: August 11, 2009Assignee: Sud-Chemie Catalysts Italia S.R.L.Inventors: Esterino Conca, Carlo Rubini, Marcello Marchi
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Patent number: 7468341Abstract: Catalysts for oxidation of methanol to formaldehyde, comprising a catalytic mixtures of Fe2(MoO4)3/MoO3, wherein the Mo/Fe atomic ratio ranges from 1.5 to 5, and a compound of cerium molybdenum and oxygen in a quantity from 0.1 to 10% by weight expressed as cerium.Type: GrantFiled: December 16, 2005Date of Patent: December 23, 2008Assignee: Sud-Chemie Catalysts Italia S.R.L.Inventors: Esterino Conca, Carlo Rubini, Marcello Marchi
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Publication number: 20060142619Abstract: Process for preparing a catalyst for the oxidation of methanol to formaldehyde, comprising reacting iron powder and molybdenum trioxide in a Mo/Fe ratio from 1.5 to 5 in an aqueous suspension at temperatures from 20 to 100° C., and subsequently, optionally simultaneously, oxidizing the mixture with an oxidizing agent in a quantity equal to, or greater than the quantity required for the oxidation of the ferrous ion to ferric ion and to oxidize the molybdenum to the valence state 6.Type: ApplicationFiled: December 16, 2005Publication date: June 29, 2006Applicant: SUD-CHEMIE CATALYSTS ITALIA S.R.L.Inventors: Esterino Conca, Carlo Rubini, Marcello Marchi
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Publication number: 20060135821Abstract: Catalysts for oxidation of methanol to formaldehyde, comprising a catalytic mixtures of Fe2(MoO4)3/MoO3, wherein the Mo/Fe atomic ratio ranges from 1.5 to 5, and a compound of cerium molybdenum and oxygen in a quantity from 0.1 to 10% by weight expressed as cerium.Type: ApplicationFiled: December 16, 2005Publication date: June 22, 2006Applicant: SUD-CHEMIE CATALYSTS ITALIA S.R.L.Inventors: Esterino Conca, Carlo Rubini, Marcello Marchi
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Publication number: 20060135371Abstract: Method for removing nitrogen oxides NOx from gas mixtures that contain them, comprising contacting of the gas mixtures with an absorbent material comprising compounds having formula CaCuO2 and/or Ca0.83CuO2 providing X-ray diffraction powder spectra that correspond, for the CaCuO2 compound, to JCPDS card 48-197 and, for the Ca0.83 CuO2, to JCPDS card 48-212, or mixtures of said compounds or compositions containing them.Type: ApplicationFiled: December 16, 2005Publication date: June 22, 2006Applicant: SUD-CHEMIE CATALYSTS ITALIA, S.R.L.Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
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Publication number: 20060129008Abstract: Catalysts for oxychlorination of ethylene to 1,2-dichlorethane, comprising compounds of copper and magnesium supported on gamma alumina, wherein the copper, expressed as metal, is present in a quantity from 7 to 12% by weight and the Mg/Cu ratio is from 0.05 to 1, wherein the distribution of copper in the catalyst particle is such that the ratio X/Y between the concentration of the copper atoms on the surface given by the Al/Cu ratio (X) on the surface (20-30 nm layer) and the concentration given by the Al/Cu ratio (Y) referred to the entire particle is greater than 1.3 and can reach 3.Type: ApplicationFiled: November 23, 2005Publication date: June 15, 2006Applicant: SUD-CHEMIE CATALYSTS ITALIA S.R.L.Inventors: Francesco Casagrande, Carlo Orsenigo