Patents by Inventor Rafael Menegassi De Almeida
Rafael Menegassi De Almeida 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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Publication number: 20230399571Abstract: The present invention relates to a renewable aviation kerosene (bioQAV) production process, the process of which involves the conversion of ethanol and optionally methanol, CO2, syngas or mixtures thereof, from renewable sources, in a hydrocarbon stream in the aviation kerosene range. The stream has mainly alkyl aromatics, and can be used as partial component of aviation kerosene, fully or partially hydrogenated to alkyl naphthenes.Type: ApplicationFiled: September 23, 2021Publication date: December 14, 2023Inventor: Rafael MENEGASSI DE ALMEIDA
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Publication number: 20230002295Abstract: The present invention relates to a method for the production of molecules with seven carbons constituted by a chain of four carbons with three methyl branches, primarily triptane (2,2,3-trimethylbutane), by alcohol coupling reaction (Guerbet reaction), resulting in an alcohol with a four-carbon chain with three methyl branches, which is transformed into triptane. The importance of this method stems from the fact that triptane is the hydrocarbon with the greatest capacity to resist compression without ignition and can be used in unleaded aviation gasolines and in the formulation of high-octane automotive gasolines.Type: ApplicationFiled: November 19, 2020Publication date: January 5, 2023Inventors: Rafael Menegassi de Almeida, Carlos Rene Klotz Rabello, Anderson Rouge dos Santos, Edimilson Jesus de Oliveira
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Publication number: 20220333021Abstract: The present invention addresses to a process for the production of alkyl-naphthenics for use as diesel and/or aviation kerosene (JET A-1), whose process involves the alkylation of olefins with monoaromatics and subsequent hydrogenation to alkyl-naphthenics. The process and catalysts of the present invention allow the regeneration of the acidic catalyst with a hydrogenating function and full recovery of its activity with hydrogen hot stripping. The catalyst is used for the formation of intermediate alkyl-aromatics and can also be used in the subsequent hydrogenation to alkyl-naphthenics.Type: ApplicationFiled: April 19, 2022Publication date: October 20, 2022Inventors: Rafael MENEGASSI DE ALMEIDA, Carlos Rene KLOTZ RABELLO, Carlos Alberto DE ARAUJO MONTEIRO
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Publication number: 20210371366Abstract: The present invention refers to a process for producing a renewable isoparaffin compound with a high octane rating, comprising a step of Guerbet reaction between an initial C5 alcohol charge obtained from renewable raw material and methanol to produce a branched renewable C6 alcohol; dewatering of the branched renewable C6 alcohol into a C6 olefin; and hydrogenation of the C6 olefin into renewable isoparaffin. A renewable isoparaffin compound with a high octane rating, comprising at least 50% carbon of renewable natural origin in its composition, and use of said renewable paraffin in gasolines in general and in special high-performance gasolines, such as aviation gasoline, are also described.Type: ApplicationFiled: November 5, 2019Publication date: December 2, 2021Inventors: Rafael MENEGASSI DE ALMEIDA, Marlito GOMES JUNIOR, Edimilson JESUS DE OLIVEIRA, Carlos RENE KLOTZ RABELLO, Anderson ROUGE DOS SANTOS
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Publication number: 20140360493Abstract: A process for converting cellulose to glucose, said process comprising the steps of: providing a hydrated molten salt; contacting the hydrated molten salt with a cellulose-containing material to form dissolved glucose; removing the dissolved glucose from the hydrated molten salt.Type: ApplicationFiled: August 22, 2014Publication date: December 11, 2014Inventors: Paul O'CONNOR, Jacob Adriaan MOULIJN, Michiel MAKKEE, Sjoerd DAAMEN, Rafael MENEGASSI DE ALMEIDA
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Publication number: 20140331992Abstract: A method is disclosed for recovering saccharide monomers and/or oligomers from a reaction mixture. The reaction mixture may further comprise water and a molten salt hydrate. The method may comprise adding an anti-solvent, whereby at least the saccharide oligomers are precipitated from the reaction mixture. In an alternate embodiment molten salt hydrate is extracted from the reaction mixture using a suitable extractant.Type: ApplicationFiled: July 24, 2014Publication date: November 13, 2014Inventors: Roman TSCHENTSCHER, Rafael MENEGASSI DE ALMEIDA, José Rafael Hernández CARUCCI, Johan VAN DEN BERGH, Jacob Adriaan MOULIJN
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Patent number: 8846902Abstract: A process for converting cellulose to glucose, said process comprising the steps of: providing a hydrated molten salt; contacting the hydrated molten salt with a cellulose-containing material to form dissolved glucose; removing the dissolved glucose from the hydrated molten salt.Type: GrantFiled: June 24, 2008Date of Patent: September 30, 2014Assignees: BIOeCON International Holding N.V., Petróleo Brasileiro S.A.—PETROBRASInventors: Paul O'Connor, Jacob Adriaan Moulijn, Michiel Makkee, Sjoerd Daamen, Rafael Menegassi de Almeida
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Publication number: 20140135510Abstract: A process is disclosed for converting a polysaccharide-containing biomass material to platform chemicals. The process comprises dissolving the polysaccharides in an inorganic molten salt hydrate, converting the polysaccharides to monosaccharides, and converting the monosaccharides to derivatized (di) anhydro sugars that are easily separable from the inorganic molten salt hydrate. The derivatized (di) anhydro sugars are useful as fuel additives and fuel substitutes.Type: ApplicationFiled: April 10, 2013Publication date: May 15, 2014Applicant: BIOeCON International Holding N.V.Inventors: Michael MAKKEE, Jacob MOULIJN, Rafael MENEGASSI DE ALMEIDA, Paul O'CONNOR
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Patent number: 8715372Abstract: Diesel cycle fuel compositions are described containing at least one dianhydrohexitol compound according to the general formula 2 and/or its derived hydrocarbyl ethers or nitric ethers compounds, where the R? and R? substituents are both H or one or both of R? and R? is alkyl, cycloalkyl or phenyl, or one or both are —NO2. A preferred fuel composition is that containing dimethyl isosorbide (DMI) added or not of isosorbide dinitrate (ISDN) as ignition improver. The dianhydrohexitols compounds form compositions with at least one of the components selected among petroleum-derived diesel fuel, biodiesel, ethanol and water. The mixture of DMI and ISDN has excellent cetane number (IQT). Still, the oxygenated nature of the dianhydrohexitols and related compounds of the fuel compositions inhibits soot formation upon burning of the said Diesel cycle fuel compositions.Type: GrantFiled: August 10, 2009Date of Patent: May 6, 2014Assignee: Petroleo Brasileiro S.A.—PetrobrasInventors: Rafael Menegassi De Almeida, Carlos Rene Klotz Rabello
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Publication number: 20130245252Abstract: A process is disclosed for conversion of cellulose in an Ionic Liquid medium. The process is characterized in that a cellulose-containing feedstock and an Ionic Liquid are mixed at a temperature below 80 ° C. The mixture is heated to a conversion temperature in the range of 80 ° C. to 220 ° C. under a hydrogen atmosphere. The presence of hydrogen during the heating step significantly reduces the formation of degradation products.Type: ApplicationFiled: March 4, 2013Publication date: September 19, 2013Applicants: Petroleo Brasileiro S.A. - PetrobrasInventors: Michiel MAKKEE, Jacob Adriaan MOULIJN, Jianrong LI, Paul O'CONNOR, Jacobus Cornelis RASSER, Armand Eduard ROSHEUVEL, Rafael MENEGASSI DE ALMEIDA
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Patent number: 8445704Abstract: A process is disclosed for converting polysaccharides to platform chemicals. The process comprises dissolving the polysaccharides in a inorganic molten salt hydrate, converting the polysaccharides to monosaccharides, and converting the monosaccharides to platform chemicals that are easily separable from the inorganic molten salt hydrate. Preferably the polysaccharides are provided in the form of a biomass, more preferably a ligno-cellulosic biomass.Type: GrantFiled: September 13, 2010Date of Patent: May 21, 2013Assignee: BIOeCON International Holding N.V.Inventors: Paul O'Connor, Rafael Menegassi De Almeida, Jacob A. Moulijn, Michiel Makkee, Sjoerd Daamen
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Patent number: 8440845Abstract: A process is disclosed for converting a polysaccharide-containing biomass material to platform chemicals. The process comprises dissolving the polysaccharides in an inorganic molten salt hydrate, converting the polysaccharides to monosaccharides, and converting the monosaccharides to derivatized (di)anhydro sugars that are easily separable from the inorganic molten salt hydrate. The derivatized (di)anhydro sugars are useful as fuel additives and fuel substitutes.Type: GrantFiled: September 19, 2011Date of Patent: May 14, 2013Assignee: BIOeCON International Holding N.V.Inventors: Michiel Makkee, Jacob Adriaan Moulijn, Rafael Menegassi De Almeida, Paul O'Connor
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Publication number: 20120108827Abstract: A process is disclosed for converting a polysaccharide-containing biomass material to platform chemicals. The process comprises dissolving the polysaccharides in an inorganic molten salt hydrate, converting the polysaccharides to monosaccharides, and converting the monosaccharides to derivatized (di)anhydro sugars that are easily separable from the inorganic molten salt hydrate. The derivatized (di)anhydro sugars are useful as fuel additives and fuel substitutes.Type: ApplicationFiled: September 19, 2011Publication date: May 3, 2012Inventors: Michiel MAKKEE, Jacob Adriaan MOULIJN, Rafael MENEGASSI DE ALMEIDA, Paul O'CONNOR
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Patent number: 8106250Abstract: The present invention relates to a process for removing organic silicon compounds from hydrocarbon streams by contact with an adsorbent and hydrogen. The adsorbent is composed of lamellar double hydroxides and group VI-B or group VIII hydrogenating metal. More specifically, the process of the present invention involves a stage of activation for formation of the lamellar double hydroxide, and maintaining the phase of lamellar double hydroxide by adding water.Type: GrantFiled: July 28, 2009Date of Patent: January 31, 2012Assignee: Petroleo Brasileiro S.A.-PetrobrasInventors: Rafael Menegassi de Almeida, Carlos René Klotz Rabello, Marcus Vinicius Eiffle Duarte, Guilherme Luis Monteiro de Souza, Joyce Leslie, legal representative, Xiaondong Hu
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Publication number: 20110060148Abstract: A process is disclosed for converting polysaccharides to platform chemicals. The process comprises dissolving the polysaccharides in a inorganic molten salt hydrate, converting the polysaccharides to monosaccharides, and converting the monosaccharides to platform chemicals that are easily separable from the inorganic molten salt hydrate. Preferably the polysaccharides are provided in the form of a biomass, more preferably a ligno-cellulosic biomass.Type: ApplicationFiled: September 13, 2010Publication date: March 10, 2011Applicant: BIOeCON International Holding N.V.Inventors: Paul O'CONNOR, Rafael Menegassi De Almeida, Sjoerd Daamen, Jacob A. Moulijn, Michiel Makkee
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Patent number: 7785461Abstract: A process for the selective hydrodesulfurization of a naphtha containing olefins and organosulfur compounds is disclosed, which minimizes the hydrogenation of the olefins and results in a product with a low sulfur content. The process involves a two-stage hydrodesulfurization with H2S removed from the first stage effluent. A flow of hydrogen and at least one added non-reactive compound is fed into the first stage, wherein the H2 molar fraction ranges from 0.2 to 1.0, and with H2S at the reactor intake limited to a maximum of 0.1% by volume. The second stage involves a feedstream of hydrogen and at least one added non-reactive compound, wherein the H2 molar fraction ranges from 0.2 to 0.7 and with H2S at the reactor intake limited to a maximum of 0.05% by volume.Type: GrantFiled: April 6, 2005Date of Patent: August 31, 2010Assignee: Petroleo Brasileiro S.A. - PetrobrasInventors: Rafael Menegassi De Almeida, Jefferson Roberto Gomes, Marcelo Edral Pacheco, Marcus Vinicius Eiffle Duarte, Rogerio Oddone, Giane Ribeiro Stuart
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Patent number: 7754068Abstract: A process for the selective hydrodesulfurization of naphtha streams containing olefins and organosulfur compounds that minimizes olefin hydrogenation and results in a reduced sulfur content product. This is attained by two-stage hydrodesulfurization and H2S removal from the first stage effluent, with the first reaction stage catalyst being a more active HDS catalyst than the second reaction stage catalyst. Hydrogen and a non-reactive compound are fed to the first stage, with the H2 mole fraction in the mixture of H2 and non-reactive compound being from 0.2 to 1.0. H2S at the reactor inlet is limited to not more than 0.1% by volume. Hydrogen and a non-reactive compound are fed to the second reaction stage, the H2 mole fraction in the mixture of H2 and non-reactive compound being from 0.2 to 0.7. H2S at the reactor inlet is limited to not more than 0.05% by volume.Type: GrantFiled: November 21, 2006Date of Patent: July 13, 2010Assignee: Petroleo Brasileiro S.A.-PetrobrasInventors: Rafael Menegassi De Almeida, Jefferson Roberto Gomes, Guilherme Luis Monteiro De Souza, Joy Leslie, legal representative, Xiaondong Hu
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Publication number: 20100064574Abstract: Diesel cycle fuel compositions are described containing at least one dianhydrohexitol compound according to the general formula 2 and/or its derived hydrocarbyl ethers or nitric ethers compounds, where the R? and R? substituents are both H or one or both of R? and R? is alkyl, cycloalkyl or phenyl, or one or both are —NO2. A preferred fuel composition is that containing dimethyl isosorbide (DMI) added or not of isosorbide dinitrate (ISDN) as ignition improver. The dianhydrohexitols compounds form compositions with at least one of the components selected among petroleum-derived diesel fuel, biodiesel, ethanol and water. The mixture of DMI and ISDN has excellent cetane number (IQT). Still, the oxygenated nature of the dianhydrohexitols and related compounds of the fuel compositions inhibits soot formation upon burning of the said Diesel cycle fuel compositions.Type: ApplicationFiled: August 10, 2009Publication date: March 18, 2010Applicant: PETRÓLEO BRASILEIRO S.A.-PETROBRASInventors: Rafael Menegassi de Almeida, Carlos Rene Klotz Rabello
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Publication number: 20100038287Abstract: The present invention relates to a process for removing organic silicon compounds from hydrocarbon streams by contact with an adsorbent and hydrogen. The adsorbent is composed of lamellar double hydroxides and group VI-B or group VIII hydrogenating metal. More specifically, the process of the present invention involves a stage of activation for formation of the lamellar double hydroxide, and maintaining the phase of lamellar double hydroxide by adding water.Type: ApplicationFiled: July 28, 2009Publication date: February 18, 2010Applicant: PETROLEO BRASILEIRO S.A.- PETROBRASInventors: Rafael MENEGASSI DE ALMEIDA, Carlos René Klotz RABELLO, Marcus Vinicius Eiffle DUARTE, Guilherme Luis MONTEIRO DE SOUZA, Joyce Leslie, Xiaondong HU
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Publication number: 20070267326Abstract: A process for the selective hydrodesulfurization of naphtha streams containing olefins and organosulfur compounds is described, said process minimizing olefin hydrogenation and resulting into a product having a reduced sulfur content, this being attained by two-stage hydrodesulfurization and H2S removal from the first stage effluent, with the first reaction stage catalyst being a more active HDS catalyst than the catalyst of the second reaction stage. A stream of hydrogen and at least one added non-reactive compound is fed to the first stage, with the H2 mole fraction in the mixture of H2 and non-reactive compound being from 0.2 to 1.0 and limiting H2S at the reactor inlet to not more than 0.1% by volume. A hydrogen and at least one added non-reactive compound stream is fed to the second reaction stage, the H2 mole fraction in the mixture of H2 and non-reactive compound being from 0.2 to 0.7 and limiting H2S at the reactor inlet to not more than 0.05% by volume.Type: ApplicationFiled: November 21, 2006Publication date: November 22, 2007Inventors: Rafael Menegassi De Almeida, Jefferson Roberto Gomes, Guilherme Luis Monteiro De Souza, Xiaondong Hu