Patents by Inventor Samuel Neto
Samuel Neto 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: 7687425Abstract: Catalyst systems for preparing phthalic anhydride by means of gas-phase oxidation of o-xylene and/or naphthalene, and a process for preparing phthalic anhydride using the catalyst systems.Type: GrantFiled: May 15, 2004Date of Patent: March 30, 2010Assignee: BASF SEInventors: Sebastian Storck, Jürgen Zühlke, Samuel Neto, Frank Rosowski
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Publication number: 20090291845Abstract: A process is described for converting a precatalyst which comprises an inert support, an organic carbon source and a multimetal oxide comprising silver and vanadium to a gas phase oxidation catalyst which comprises the inert support and a catalytically active silver vanadium oxide bronze, by treating the precatalyst thermally at a temperature of at least 350° C. in a gas atmosphere which comprises less than 10% by volume of oxygen, wherein, before the thermal treatment, the amount of the carbon source in the precatalyst is adjusted to a value below a critical amount The carbon content is reduced by burning-off at a temperature of from 80 to 200° C. in an oxygenous atmosphere with decomposition of a portion of the carbon source. The catalysts obtained serve for the gas phase partial oxidation of aromatic hydrocarbons to aldehydes, carboxylic acids and/or carboxylic anhydrides.Type: ApplicationFiled: December 20, 2006Publication date: November 26, 2009Applicant: BASF SEInventors: Samuel Neto, Hartmut Hibst, Frank Rosowski, Sebastian Storck, Jürgen Zühlke
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Patent number: 7592294Abstract: A process is described for producing a catalyst for gas-phase oxidations, in which a suspension of TiO2 and V2O5 particles is applied to a fluidized inert support, wherein at least 90% by volume of the V2O5 particles have a diameter of 20 ?m or less and at least 95% by volume of the V2O5 particles have a diameter of 30 ?m or less. The defined particle size distribution of the V2O5 allows a high coating efficiency.Type: GrantFiled: September 24, 2004Date of Patent: September 22, 2009Assignee: BASF SEInventors: Sebastian Storck, Jürgen Zühlke, Samuel Neto, Frank Rosowski, Wolfgang Rummel
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Publication number: 20080312450Abstract: Methods comprising: providing an oxidation catalyst bed; and starting up the oxidation catalyst at a temperature of 360° C. to 400° C. with an amount of air of 1.0 to 3.5 standard m3/h and a hydrocarbon loading of 20 to 65 g/standard m3, such that a hot spot having a temperature of 390° C. to <450° C. is formed in the first 7-20% of the catalyst bed.Type: ApplicationFiled: June 30, 2006Publication date: December 18, 2008Applicant: BASF AktiengesellschaftInventors: Samuel Neto, Frank Rosowski, Sebastian Storck, Juergen Zuehlke, Hans-Martin Allmann, Thomas Lautensack, Rainer Steeg
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Patent number: 7462727Abstract: A multimetal oxide of the formula I, Aga-cQbMcV2Od*e H2O,??I where a is from 0.3 to 1.9, Q is an element selected from among P, As, Sb and/or Bi, is from 0 to 0.3, M is a metal selected from among Nb, Ce, W, Mn, Ta, Pd, Pt, Ru and/or Rh, c is from 0.001 to 0.5, with the proviso that (a-c)?0.1, d is a number which is determined by the valence and abundance of the elements other than oxygen in the formula I and e is from 0 to 20, and also precatalysts and catalysts produced therefrom for the partial oxidation of aromatic hydrocarbons are described.Type: GrantFiled: July 23, 2004Date of Patent: December 9, 2008Assignee: BASF AktiengesellschaftInventors: Samuel Neto, Hartmut Hibst, Frank Rosowski, Sebastian Storck
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Publication number: 20080200685Abstract: Processes comprising providing a catalyst precursor, and heating the catalyst precursor to a temperature of at least 350° C. in an atmosphere comprising air, wherein air is fed into the atmosphere at a rate of 0.05 to 4.0 standard m3/h, and wherein the catalyst precursor is activated at a temperature of at least 350° C. for more than 9 hours are described along with catalysts formed thereby and uses for such catalysts.Type: ApplicationFiled: May 31, 2006Publication date: August 21, 2008Applicant: BASF AktiengesellschaftInventors: Samuel Neto, Frank Rosowski, Sebastian Storck, Jurgen Zuhlke, Hans-Martin Allmann, Thomas Lautensack, Rainer Steeg
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Patent number: 7390911Abstract: The invention relates to a process for preparing phthalic anhydride, in which the catalytic gas-phase oxidation of o-xylene and/or naphthalene is carried out over at least three zones of catalysts of increasing activity, with only the last zone of the catalyst system containing phosphorus and the last zone also comprising at least 10% by weight of vanadium (calculated as V2O5) based on the active composition of the catalyst and having a ratio of vanadium (calculated as V2O5) to phosphorus of greater than 35.Type: GrantFiled: May 15, 2004Date of Patent: June 24, 2008Assignee: BASF AktiengesellschaftInventors: Samuel Neto, Jürgen Zühlke, Sebastian Storck, Frank Rosowski
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Patent number: 7371893Abstract: A description is given of a process for preparing aldehydes, carboxylic acids and/or carboxylic anhydrides, in particular phthalic anhydride, in which a gaseous stream comprising an aromatic hydrocarbon and molecular oxygen is passed at elevated temperature over a bed of a first catalyst and a bed which is made up of a second catalyst having a higher activity than the first catalyst and is located downstream of the first catalyst in the flow direction of the gaseous stream, wherein the catalytically active composition of the first catalyst comprises at least vanadium oxide, titanium dioxide and antimony oxide and the ratio of vanadium, calculated as V2O5, to antimony, calculated as Sb2O3, in the first catalyst is from 3.5:1 to 5:1. The source of antimony oxide used for the first catalyst is preferably particulate antimony trioxide having a mean particle size of from 0.5 to 5 ?m. The process allows the desired oxidation products to be obtained in high yield over longer periods of time.Type: GrantFiled: May 21, 2004Date of Patent: May 13, 2008Assignee: BASF AktiengesellschaftInventors: Sebastian Storck, Jürgen Zühlke, Samuel Neto, Frank Rosowski
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Publication number: 20080064594Abstract: Catalytic titanium dioxide mixtures comprising: a first anatase titanium dioxide having a BET surface area greater than 15 m2/g and a hydrogen uptake for the reduction of Ti4+ to Ti of from 5 to 20 ?mol/m2; and a second anatase titanium dioxide having a BET surface area less than or equal to 15 m2/g and a hydrogen uptake for the reduction of Ti4+ to Ti3+ of from 0.6 to 7 ?mol/m2, processes for preparing catalysts containing the same, catalysts containing active compositions including such titanium dioxide mixtures on support materials, and catalyst systems using the same.Type: ApplicationFiled: April 11, 2005Publication date: March 13, 2008Applicant: BASF Aktiengesellschaft Patents, Trademarks and LicensesInventors: Samuel Neto, Sebastian Storck, Jurgen Zuhlke, Frank Rosowski
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Patent number: 7338918Abstract: A catalyst is described which has a catalytically active composition which contains a phase A and a phase B in the form of three-dimensional delimited regions, wherein phase A is a silver-vanadium oxide bronze and phase B a mixed oxide phase based on titanium dioxide and vanadium pentoxide. The catalyst serves to prepare aldehydes, carboxylic acids and/or carboxylic anhydrides from aromatic or heteroaromatic hydrocarbons by gas phase oxidation.Type: GrantFiled: March 24, 2005Date of Patent: March 4, 2008Assignee: BASF AktiengesellschaftInventors: Samuel Neto, Frank Rosowski, Sebastian Storck, Stefan Bauer
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Publication number: 20080019892Abstract: Multimetal oxides corresponding to the general formula (I), processes for their preparation, precatalysts containing such oxides and catalysts made therefrom for gas phase partial oxidation of hydrocarbons: Aga-cQbMcV12Od.eH2O??(I) wherein a represents a number having a value of 5 to 9; Q represents an element selected from the group consisting of P, As, Sb, Bi and mixtures thereof; b represents a number having a value of 0.Type: ApplicationFiled: June 14, 2005Publication date: January 24, 2008Applicant: BASF AktiengesellschaftInventors: Samuel Neto, Hartmut Hibst, Frank Rosowski, Sebastian Storck, Jurgen Zuhlke
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Publication number: 20070213555Abstract: A catalyst is described which has a catalytically active composition which contains a phase A and a phase B in the form of three-dimensional delimited regions, wherein phase A is a silver-vanadium oxide bronze and phase B a mixed oxide phase based on titanium dioxide and vanadium pentoxide. The catalyst serves to prepare aldehydes, carboxylic acids and/or carboxylic anhydrides from aromatic or heteroaromatic hydrocarbons by gas phase oxidation.Type: ApplicationFiled: March 24, 2005Publication date: September 13, 2007Applicant: BASF AktiengesellschaftInventors: Samuel Neto, Frank Rosowski, Sebastian Storck, Stefan Bauer
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Publication number: 20070135302Abstract: The invention relates to a process for producing a catalyst for gas-phase oxidations, which comprises weighing a particulate inert support having a total mass of Msupport into a fluidized-bed apparatus, providing an aqueous suspension of a catalytically active material or sources therefor and a binder having a binder content of Bsusp, fluidizing the inert support by introduction of a gas stream heated to a temperature of Tgas at a flow rate of Qgas, and spraying the suspension at a rate of Qsusp onto the fluidized inert support. When Qgas, Qsusp, Bsusp, Msupport and Tgas are selected within the ranges 3000?Qgas [m3/h]?9000, 1000?Qsusp [g/min]?3500, 2?Bsusp [% by weight]?18, 60?Msupport [kg]?240. 75?Tgas [° C.]?120 so that a parameter K defined as K=0.020 Qgas?0.055 Qsusp+7.500 Bsusp?0.667 Msupport+2.069 Tgas?7 satisfies the relationship 127.5?K?202, high-quality coatings can be produced and the formation of twins made up of support particles adhering to one another can be avoided.Type: ApplicationFiled: September 24, 2004Publication date: June 14, 2007Inventors: Samuel Neto, Wolfgang Rummel, Sebastien Storck, Jurgen Zuhlke, Frank Rosowski
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Publication number: 20070093384Abstract: A process is described for producing a catalyst for gas-phase oxidations, in which a suspension of TiO2 and V2O5 particles is applied to a fluidized inert support, wherein at least 90% by volume of the V2O5 particles have a diameter of 20 ?m or less and at least 95% by volume of the V2O5 particles have a diameter of 30 ?m or less. The defined particle size distribution of the V2O5 allows a high coating efficiency.Type: ApplicationFiled: September 24, 2004Publication date: April 26, 2007Applicant: Basf AktiengesellschaftInventors: Sebastian Storck, Jurgen Zuhlke, Samuel Neto, Frank Rosowski, Wolfgang Rummel
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Publication number: 20070066836Abstract: The invention relates to a process for preparing phthalic anhydride, in which the catalytic gas-phase oxidation of o-xylene and/or naphthalene is carried out over at least three zones of catalysts of increasing activity, with only the last zone of the catalyst system containing phosphorus and the last zone also comprising at least 10% by weight of vanadium (calculated as V2O5) based on the active composition of the catalyst and having a ratio of vanadium (calculated as V2O5) to phosphorus of greater than 35.Type: ApplicationFiled: May 15, 2004Publication date: March 22, 2007Applicant: Basf AktiengesellschaftInventors: Samuel Neto, Jurgen Zuhlke, Sebastian Storck, Frank Rosowski
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Publication number: 20070060758Abstract: A description is given of a process for preparing aldehydes, carboxylic acids and/or carboxylic anhydrides, in particular phthalic anhydride, in which a gaseous stream comprising an aromatic hydrocarbon and molecular oxygen is passed at elevated temperature over a bed of a first catalyst and a bed which is made up of a second catalyst having a higher activity than the first catalyst and is located downstream of the first catalyst in the flow direction of the gaseous stream, wherein the catalytically active composition of the first catalyst comprises at least vanadium oxide, titanium dioxide and antimony oxide and the ratio of vanadium, calculated as V2O5, to antimony, calculated as Sb2O3, in the first catalyst is from 3.5:1 to 5:1. The source of antimony oxide used for the first catalyst is preferably particulate antimony trioxide having a mean particle size of from 0.5 to 5 ?m. The process allows the desired oxidation products to be obtained in high yield over longer periods of time.Type: ApplicationFiled: May 21, 2004Publication date: March 15, 2007Applicant: BASF AKTIENGESELLSCHAFTInventors: Sebastian Storck, Jurgen Zuhlke, Samuel Neto, Frank Rosowski
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Publication number: 20070041795Abstract: The invention relates to an apparatus for mixing, drying and coating pulverulent, granular or shaped loose material in a fluidized bed, in particular for use in a process for producing supported catalysts for gas-phase oxidations, which comprises a container (10) for accommodating the loose material, with a bowl-like depression (17) being provided in a lower region (13) of the container (10), a central tube (27) for introducing a gas, with the central tube entering the container in an upper region (12) of the container (10), extending essentially axially downward in the container (10) and opening into the depression (17), an essentially annular deflection shield (29) which is fixed to the central tube (27) in the upper region (12) of the container (10), a guide ring (31) which is located in the lower region (13) of the container (10) and surrounds the central tube (27) essentially concentrically at a distance (L) for part of its length so that a first opening (34) is formed between the wall of the container (Type: ApplicationFiled: September 24, 2004Publication date: February 22, 2007Applicant: BASF Aktiengesellschaft Patents, Trademarks and LicensesInventors: Samuel Neto, Wolfgang Rummel, Sebastian Storck, Jurgen Zuhlke, Frank Rosowski
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Publication number: 20060276661Abstract: Catalyst systems for preparing phthalic anhydride by means of gas-phase oxidation of o-xylene and/or naphthalene, and a process for preparing phthalic anhydride using the catalyst systems.Type: ApplicationFiled: May 15, 2004Publication date: December 7, 2006Applicant: BASF AKTIENGESELLSCHAFTInventors: Sebastian Storck, Jurgen Zuhike, Samuel Neto, Frank Rosowski
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Publication number: 20060247446Abstract: A multimetal oxide of the formula I, Aga-cQbMcV2Od*eH2O,??I where a is from 0.3 to 1.9, Q is an element selected from among P, As, Sb and/or Bi, is from 0 to 0.3, M is a metal selected from among Nb, Ce, W, Mn, Ta, Pd, Pt, Ru and/or Rh, c is from 0.001 to 0.5, with the proviso that (a-c)?0.1, d is a number which is determined by the valence and abundance of the elements other than oxygen in the formula I and e is from 0 to 20, and also precatalysts and catalysts produced therefrom for the partial oxidation of aromatic hydrocarbons are described.Type: ApplicationFiled: July 23, 2004Publication date: November 2, 2006Inventors: Samuel Neto, Hartmut Hibst, Frank Rosowski, Sebastian Storck
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Publication number: 20060235232Abstract: A catalyst for gas-phase oxidations which comprises an inert support and a catalytically active composition comprising transition metal oxides applied thereto, or a precatalyst, is described. The (pre)catalyst is obtained by treating the inert support with an aqueous suspension or solution of the transition metal oxides or their precursor compounds, where the suspension contains a binder dispersion and the binder is a copolymer of an ?-olefin and a vinyl-C2-C4-carboxylate whose vinyl C2-C4-carboxylate content is at least 62 mol %.Type: ApplicationFiled: July 30, 2004Publication date: October 19, 2006Applicant: BASF AktiengesellschaftInventors: Samuel Neto, Jurgen Zuhlke, Sebastian Storck, Frank Rosowski