Patents by Inventor Aghaddin Mamedov
Aghaddin Mamedov 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: 11148985Abstract: A process for producing ethylene and syngas comprising reacting, via OCM, first reactant mixture (CH4&O2) in first reaction zone comprising OCM catalyst to produce first product mixture comprising ethylene, ethane, hydrogen, CO2, CO, and unreacted methane; introducing second reactant mixture comprising first product mixture to second reaction zone excluding catalyst to produce second product mixture comprising ethylene, ethane, hydrogen, CO, CO2, and unreacted methane, wherein a common reactor comprises both the first and second reaction zones, wherein ethane of second reactant mixture undergoes cracking to ethylene, wherein CO2 of second reactant mixture undergoes hydrogenation to CO, and wherein an amount of ethylene in the second product mixture is greater than in the first product mixture; recovering methane stream, ethane stream, CO2 stream, ethylene stream, and syngas stream (CO&H2) from the second product mixture; and recycling the ethane stream and the carbon dioxide stream to second reactionType: GrantFiled: January 29, 2018Date of Patent: October 19, 2021Assignee: Sabic Global Technologies, B.V.Inventors: Aghaddin Mamedov, David West, Vidya Sagar Reddy Sarsani, Wugeng Liang
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Patent number: 11091410Abstract: A mixed oxide catalyst for the oxidative coupling of methane can include a catalyst with the formula AaBbCcDdOx, wherein: element A is selected from alkaline earth metals; elements B and C are selected from rare earth metals, and wherein elements B and C are different rare earth metals; the oxide of at least one of A, B, C, and D has basic properties; the oxide of at least one of A, B, C, and D has redox properties; and elements A, B, C, and D are selected to create a synergistic effect whereby the catalytic material provides a methane conversion of greater than or equal to 15% and a C2+ selectivity of greater than or equal to 70%. Systems and methods can include contacting the catalyst with methane and oxygen and purifying or collecting C2+ products.Type: GrantFiled: March 5, 2018Date of Patent: August 17, 2021Inventors: Wugeng Liang, Sagar Sarsani, Aghaddin Mamedov, Hector Perez, David West, Istvan Lengyel
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Publication number: 20200247730Abstract: A process for producing C2+ hydrocarbons comprising introducing a reactant mixture to an oxidative coupling of methane (OCM) reactor comprising an OCM catalyst composition; wherein the reactant mixture comprises CH4, O2, and a chlorine intermediate precursor; wherein the chlorine intermediate precursor is present in the reactant mixture from about 1 ppm to about 100 ppm, based on the total volume of the reactant mixture; allowing the reactant mixture to contact the OCM catalyst composition and react via an OCM reaction to form a product mixture comprising unreacted methane and C2+ hydrocarbons; wherein the process for producing C2+ hydrocarbons is characterized by improved performance in the presence of the chlorine intermediate precursor; recovering at least a portion of the product mixture from the OCM reactor; and recovering the C2+ hydrocarbons from the product mixture. The OCM reactor is operated under autothermal or isothermal conditions.Type: ApplicationFiled: January 27, 2020Publication date: August 6, 2020Inventors: Aghaddin MAMEDOV, Pankaj GAUTAM, Hoang NGUYEN
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Patent number: 10717068Abstract: A metal oxide catalyst capable of catalyzing an oxidative coupling of methane reaction is described. The metal oxide catalyst includes a lanthanum (La) cerium (Ce) metal oxide and further including a lanthanum hydroxide (La(OH)3) crystalline phase. The catalyst is capable of catalyzing the production of C2+ hydrocarbons from methane and oxygen. Methods and systems of using the metal oxide catalyst to produce C2+ hydrocarbons from a reactant gas are also described.Type: GrantFiled: May 2, 2016Date of Patent: July 21, 2020Assignee: SABIC GLOBAL TECHNOLOGIESInventors: Wugeng Liang, Sagar Sarsani, David West, James Lowrey, Aghaddin Mamedov, Istvan Lengyel
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Patent number: 10696607Abstract: Disclosed is a process for producing C2+ hydrocarbons, and systems for implementing the process, that includes providing a reactant feed that includes methane and an oxygen containing gas to a first reaction zone, wherein the temperature of the reactant feed is less than 700° C. contacting the reactant feed with a first catalyst capable of catalyzing an oxidative coupling of methane reaction (OCM) to produce a first product stream that includes C2+ hydrocarbons and heat, and contacting the first product stream with a second catalyst capable of catalyzing an OCM reaction to produce a second product stream that includes C2+ hydrocarbons, wherein the produced heat is at least partially used to heat the first product stream prior to or during contact with the second catalyst, wherein the amount of C2+ hydrocarbons in the second product stream is greater than the amount of C2+ hydrocarbons in the first product stream.Type: GrantFiled: May 2, 2016Date of Patent: June 30, 2020Assignee: SABIC GLOBAL TECHNOLOGIES B.V.Inventors: Wugeng Liang, Sagar Sarsani, David West, James Lowrey, Aghaddin Mamedov, Istvan Lengyel
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Patent number: 10669218Abstract: A process for producing ethylene comprising: (a) reacting a reactant mixture in a reactor to yield a product mixture, wherein the reactor comprises a catalyst, wherein the reactant mixture comprises ethane, oxygen, and a chlorine intermediate precursor, wherein the product mixture comprises ethylene, unreacted ethane, carbon monoxide, and carbon dioxide, wherein the catalyst comprises a redox agent, an alkali metal, and a rare earth element; and (b) recovering at least a portion of the ethylene from the product mixture. The reacting in step (a) further comprises (i) contacting at least a portion of the chlorine intermediate precursor with the catalyst to form a chlorinated catalyst; (ii) allowing at least a portion of the chlorinated catalyst to generate a chlorine intermediate; and (iii) allowing at least a portion of the reactant mixture to react via the chlorine intermediate.Type: GrantFiled: August 5, 2019Date of Patent: June 2, 2020Assignee: Sabic Global Technologies, B.V.Inventor: Aghaddin Mamedov
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Publication number: 20200131102Abstract: A process for producing ethylene comprising (a) contacting a reactant mixture with an oxidative coupling of methane (OCM) catalyst in the presence of a chlorine intermediate precursor in a reactor to yield a product mixture, wherein the reactant mixture comprises methane and oxygen, wherein the product mixture comprises ethylene, ethane, and unreacted methane, and wherein the OCM catalyst comprises an alkali metal, an alkaline earth metal, or both; and (b) recovering at least a portion of the ethylene from the product mixture. Yielding the product mixture in step (a) further comprises (i) allowing a first portion of the reactant mixture to react via an OCM reaction, (ii) allowing at least a portion of the chlorine intermediate precursor to generate a chlorine intermediate, and (iii) allowing a second portion of the reactant mixture to react via the chlorine intermediate.Type: ApplicationFiled: February 5, 2018Publication date: April 30, 2020Inventor: Aghaddin MAMEDOV
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Patent number: 10625244Abstract: An oxidative coupling of methane (OCM) catalyst composition comprising one or more oxides doped with Ag; wherein one or more oxides comprises a single metal oxide, mixtures of single metal oxides, a mixed metal oxide, mixtures of mixed metal oxides, or combinations thereof; and wherein one or more oxides is not La2O3 alone. A method of making an OCM catalyst composition comprising calcining one or more oxides and/or oxide precursors to form one or more calcined oxides, wherein the one or more oxides comprises a single metal oxide, mixtures of single metal oxides, a mixed metal oxide, mixtures of mixed metal oxides, or combinations thereof, wherein the one or more oxides is not La2O3 alone, and wherein the oxide precursors comprise oxides, nitrates, carbonates, hydroxides, or combinations thereof; doping the one or more calcined oxides with Ag to form the OCM catalyst composition; and thermally treating the OCM catalyst composition.Type: GrantFiled: July 13, 2016Date of Patent: April 21, 2020Assignee: Sabic Global Technologies, B.V.Inventors: Wugeng Liang, Vidya Sagar Reddy Sarsani, David West, Hector Perez, Aghaddin Mamedov, Istvan Lengyel, James Lowrey
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Publication number: 20200048164Abstract: A method of selecting a stable mixed metal oxide catalyst for an oxidative coupling of methane (OCM) reaction is disclosed. The method may include, obtaining a mixed metal oxide material having catalytically active metal oxides for the OCM reaction and identifying the Tammann temperature (TTam) of at least one of the catalytically active metals oxides of the mixed metal oxide material. The method further includes selecting the mixed metal oxide material for use as a catalyst in the OCM reaction if the at least one catalytically active metal oxides present in the mixed metal oxide material has a TTam greater than a predetermined temperature.Type: ApplicationFiled: October 17, 2017Publication date: February 13, 2020Inventors: Sagar Sarsani, Wugeng Liang, Dick Nagaki, Krishnan Sankaranarayanan, David West, Aghaddin Mamedov
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Publication number: 20200017424Abstract: A mixed oxide catalyst for the oxidative coupling of methane can include a catalyst with the formula AaBbCcDdOx, wherein: element A is selected from alkaline earth metals; elements B and C are selected from rare earth metals, and wherein elements B and C are different rare earth metals; the oxide of at least one of A, B, C, and D has basic properties; the oxide of at least one of A, B, C, and D has redox properties; and elements A, B, C, and D are selected to create a synergistic effect whereby the catalytic material provides a methane conversion of greater than or equal to 15% and a C2+ selectivity of greater than or equal to 70%. Systems and methods can include contacting the catalyst with methane and oxygen and purifying or collecting C2| products.Type: ApplicationFiled: March 5, 2018Publication date: January 16, 2020Applicant: SABIC Global Technologies, B.V.Inventors: Wugeng LIANG, Sagar SARSANI, Aghaddin MAMEDOV, Hector PEREZ, David WEST, Istvan LENGYEL
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Publication number: 20190389788Abstract: A process for producing ethylene and syngas comprising reacting, via OCM, first reactant mixture (CH4&O2) in first reaction zone comprising OCM catalyst to produce first product mixture comprising ethylene, ethane, hydrogen, CO2, CO, and unreacted methane; introducing second reactant mixture comprising first product mixture to second reaction zone excluding catalyst to produce second product mixture comprising ethylene, ethane, hydrogen, CO, CO2, and unreacted methane, wherein a common reactor comprises both the first and second reaction zones, wherein ethane of second reactant mixture undergoes cracking to ethylene, wherein CO2 of second reactant mixture undergoes hydrogenation to CO, and wherein an amount of ethylene in the second product mixture is greater than in the first product mixture; recovering methane stream, ethane stream, CO2 stream, ethylene stream, and syngas stream (CO&H2) from the second product mixture; and recycling the ethane stream and the carbon dioxide stream to second reactionType: ApplicationFiled: January 29, 2018Publication date: December 26, 2019Inventors: Aghaddin MAMEDOV, David WEST, Vidya Sagar Reddy SARSANI, Wugeng LIANG
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Publication number: 20190359546Abstract: A process for producing ethylene comprising: (a) reacting a reactant mixture in a reactor to yield a product mixture, wherein the reactor comprises a catalyst, wherein the reactant mixture comprises ethane, oxygen, and a chlorine intermediate precursor, wherein the product mixture comprises ethylene, unreacted ethane, carbon monoxide, and carbon dioxide, wherein the catalyst comprises a redox agent, an alkali metal, and a rare earth element; and (b) recovering at least a portion of the ethylene from the product mixture. The reacting in step (a) further comprises (i) contacting at least a portion of the chlorine intermediate precursor with the catalyst to form a chlorinated catalyst; (ii) allowing at least a portion of the chlorinated catalyst to generate a chlorine intermediate; and (iii) allowing at least a portion of the reactant mixture to react via the chlorine intermediate.Type: ApplicationFiled: August 5, 2019Publication date: November 28, 2019Inventor: Aghaddin MAMEDOV
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Publication number: 20190275499Abstract: An oxidative coupling of methane (OCM) catalyst composition characterized by the overall general formula Sr1.0CeaYbbOc, wherein a is from about 0.01 to about 2.0, wherein b is from about 0.01 to about 2.0, wherein the sum (a+b) is not 1.0, and wherein c balances the oxidation states. A method of making an oxidative coupling of methane (OCM) catalyst composition comprising (a) forming an oxide precursor mixture, wherein the oxide precursor mixture comprises one or more compounds comprising a Sr cation, one or more compounds comprising a Ce cation, and one or more compounds comprising a Yb cation, and wherein the oxide precursor mixture is characterized by a molar ratio of Sr:(Ce+Yb) that is not about 1:1, and (b) calcining at least a portion of the oxide precursor mixture to form the OCM catalyst composition, wherein the OCM catalyst composition comprises Sr—Ce—Yb—O perovskite in an amount of less than about 75.0 wt. %.Type: ApplicationFiled: November 7, 2017Publication date: September 12, 2019Inventors: Wugeng LIANG, Vidya Sagar Reddy SARSANI, David WEST, Hector PEREZ, Aghaddin MAMEDOV
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Patent number: 10357759Abstract: Disclosed are metal oxide catalysts, and methods for their use, that includes a bulk metal oxide catalyst composed of at least two metals and nesosilicate. The catalyst is capable of catalyzing the carbon dioxide reforming of methane to produce hydrogen and carbon monoxide.Type: GrantFiled: July 16, 2015Date of Patent: July 23, 2019Assignee: SABIC GLOBAL TECHNOLOGIES B.V.Inventors: Lawrence D'Souza, Vinu Viswanath, Ugo Ravon, Aghaddin Mamedov
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Publication number: 20180362418Abstract: Methods and catalysts for producing ethylene and methanol from natural gas are presented. Methods include integration of oxidative conversion of methane to ethane, ethane in situ thermal cracking using the thermal heat generated thereby and direct hydrogenation of byproducts to methanol or oxidative CO2 autothermal reforming of methane to syngas.Type: ApplicationFiled: December 7, 2016Publication date: December 20, 2018Applicant: SABIC Global Technologies B.V.Inventors: Aghaddin MAMEDOV, David WEST, Wugeng LIANG, Sagar SARSANI
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Publication number: 20180353940Abstract: A metal oxide catalyst capable of catalyzing an oxidative coupling of methane reaction is described. The metal oxide catalyst includes a lanthanum (La) cerium (Ce) metal oxide and further including a lanthanum hydroxide (La(OH)3) crystalline phase. The catalyst is capable of catalyzing the production of C2+ hydrocarbons from methane and oxygen. Methods and systems of using the metal oxide catalyst to produce C2+ hydrocarbons from a reactant gas are also described.Type: ApplicationFiled: May 2, 2016Publication date: December 13, 2018Inventors: Wugeng Liang, Sagar Sarsani, David West, James Lowrey, Aghaddin Mamedov, Istvan Lengyel
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Publication number: 20180311658Abstract: Disclosed is a process to prepare a [MnNaW]On/SiO2 catalyst using manganese oxide (MnO2) and tungsten oxide (WO3) nanostructures. Also disclosed are methods and systems using the aforementioned catalyst having higher methane conversion and C2 to C4 selectivity compared to similar catalysts not prepared with MnO2 and WO3 nanostructures.Type: ApplicationFiled: September 14, 2016Publication date: November 1, 2018Inventors: Wugeng LIANG, Vidya Sagar Reddy SARSANI, David WEST, Aghaddin MAMEDOV, James LOWREY, Istvan LENGYEL
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Publication number: 20180162785Abstract: Disclosed is a process for producing C2+ hydrocarbons, and systems for implementing the process, that includes providing a reactant feed that includes methane and an oxygen containing gas to a first reaction zone, wherein the temperature of the reactant feed is less than 700° C. contacting the reactant feed with a first catalyst capable of catalyzing an oxidative coupling of methane reaction (OCM) to produce a first product stream that includes C2+ hydrocarbons and heat, and contacting the first product stream with a second catalyst capable of catalyzing an OCM reaction to produce a second product stream that includes C2+ hydrocarbons, wherein the produced heat is at least partially used to heat the first product stream prior to or during contact with the second catalyst, wherein the amount of C2+ hydrocarbons in the second product stream is greater than the amount of C2+ hydrocarbons in the first product stream.Type: ApplicationFiled: May 2, 2016Publication date: June 14, 2018Inventors: Wugeng Liang, Sagar Sarsani, David West, James Lowrey, Aghaddin Mamedov, Istvan Lengyel
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Publication number: 20180093888Abstract: Methods of preparing syngas are provided. An exemplary method can include hydrogenation of carbon dioxide (CO2) via a reverse water gas shift (RWGS) reaction. Catalysts that include Cu and/or Mn can be used, and the RWGS reaction can be conducted at a temperature greater than 600° C. The syngas produced from hydrogenation of CO2 can be used to generate light olefins via a Fischer-Tropsch synthesis (FT) reaction.Type: ApplicationFiled: April 21, 2016Publication date: April 5, 2018Inventors: Aghaddin MAMEDOV, Shahid SHAIKH, Clark REA
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Patent number: 9902665Abstract: A method for producing C2+ hydrocarbons and H2 comprising (a) introducing to a reactor a reactant mixture comprising methane, (b) heating the reactant mixture to a preheating temperature to yield a heated mixture, (c) generating free radicals in the heated mixture to form a primary effluent mixture comprising free radicals, C2+ hydrocarbons, H2, and unreacted methane, (d) reacting the primary effluent mixture in a secondary reaction zone to form a secondary effluent mixture comprising C2+ hydrocarbons, H2, free radicals, and unreacted methane, at a secondary reaction zone temperature that is greater than the preheating temperature, wherein a free radicals amount in the primary effluent mixture is greater than a free radicals amount in the secondary effluent mixture, (e) cooling the secondary effluent mixture to a quench temperature lower than the secondary reaction zone temperature to yield a product mixture comprising C2+ hydrocarbons and H2, and (f) recovering the product mixture.Type: GrantFiled: June 10, 2016Date of Patent: February 27, 2018Assignee: Sabic Global Technologies, B.V.Inventors: Dick A. Nagaki, Zhun Zhao, Myat Noe Zin Myint, Istvan Lengyel, Aghaddin Mamedov, C. William Gundlach, IV, Krishnan Sankaranarayanan, Derek Falcone