Patents by Inventor Wugeng Liang
Wugeng Liang 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: 11969724Abstract: The invention relates to a reactor system for oxidative coupling of methane (OCM), comprising: reactor system for oxidative coupling of methane (OCM), comprising: (a) an inlet configured to receive a reactant mixture; (b) a reaction chamber having an upstream end and a downstream end such that the reaction chamber extends from the upstream end to the downstream end, and the reaction chamber comprises a catalyst bed having a catalyst composition having at least two catalyst components: (i) a low selectivity catalyst component; and (ii) a high selectivity catalyst component; and (c) an outlet configured to recover a C2+ hydrocarbon product mixture from the reactor system; wherein the reactor system is configured such that the reactant mixture substantially contacts the high selectivity catalyst component prior to contacting the low selectivity catalyst component. The invention further describes a process for the production of C2+ hydrocarbon product mixture using the present reactor system.Type: GrantFiled: December 7, 2021Date of Patent: April 30, 2024Assignee: SABIC Global Technologies B.V.Inventors: Wugeng Liang, Hector Perez, Pankaj Gautam Singh, David West
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Publication number: 20230347309Abstract: The invention relates to a reactor system for oxidative coupling of methane (OCM), comprising: reactor system for oxidative coupling of methane (OCM), comprising: (a) an inlet configured to receive a reactant mixture; (b) a reaction chamber having an upstream end and a downstream end such that the reaction chamber extends from the upstream end to the downstream end, and the reaction chamber comprises a catalyst bed having a catalyst composition having at least two catalyst components: (i) a low selectivity catalyst component; and (ii) a high selectivity catalyst component; and (c) an outlet configured to recover a C2+ hydrocarbon product mixture from the reactor system; wherein the reactor system is configured such that the reactant mixture substantially contacts the high selectivity catalyst component prior to contacting the low selectivity catalyst component. The invention further describes a process for the production of C2+ hydrocarbon product mixture using the present reactor system.Type: ApplicationFiled: December 7, 2021Publication date: November 2, 2023Inventors: Wugeng LIANG, Hector PEREZ, Pankaj Gautam SINGH, David WEST
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Patent number: 11753357Abstract: A multilayer supported oxidative coupling of methane (OCM) catalyst composition (alpha-Al2O3 support, first single oxide layer, one or more mixed oxide layers, optional second single oxide layer) characterized by formula AaZbEcDdOx/alpha-Al2O3; A is alkaline earth metal; Z is first rare earth element; E is second rare earth element; D is redox agent/third rare earth element; the first, second, third rare earth element are not the same; a=1.0; b=0.1-10.0; c=0.1-10.0; d=0-10.0; x balances oxidation states; first single oxide layer (Zb1Ox1, b1=0.1-10.0; x1 balances oxidation states) contacts alpha-Al2O3 support and one or more mixed oxide layers; one or more mixed oxide layers (Aa2Zb2Ec2Dd2Ox2, a2=1.0; b2=0.1-10.0; c2=0.1-10.0; d2=0-10.Type: GrantFiled: September 21, 2020Date of Patent: September 12, 2023Assignee: SABIC Global Technologies B.V.Inventors: Wugeng Liang, Azim Ali, Hector Perez, Jae Hyung Kim, Pankaj Gautam, David West
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Patent number: 11666879Abstract: Disclosed herein are systems and processes for the conversion of a methane feedstock to C2+ hydrocarbons.Type: GrantFiled: April 18, 2019Date of Patent: June 6, 2023Assignee: SABIC GLOBAL TECHNOLOGIES B.V.Inventors: Wugeng Liang, Sagar Sarsani, David West, James Kauffman, Jonathan Banke, Hector Perez, Robert C. Schucker, Tian Gu, Vemuri Balakotaiah
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Publication number: 20230166239Abstract: The invention relates to a composition containing an oxide supported oxidative coupling of methane catalyst having an excellent balance of catalytic activity and selectivity while retaining desired levels mechanical stability suitable for commercial reactor application. Particularly, the inventive catalyst is an oxide supported catalyst with the oxide catalyst support having a spherical diameter of less than 2 mm and a surface area of less than less than 9.5 m2/g while retaining a water sorption volume of at least 0.2 cc/g. The invention further provides a method for preparing such a composition containing an oxide supported catalyst, using a combination of thermal treatment of the oxide catalyst support, active component impregnation and followed up by calcination. Additionally, the invention also describes a process for producing C2+ hydrocarbons, using such a catalyst composition.Type: ApplicationFiled: February 22, 2021Publication date: June 1, 2023Inventors: Wugeng LIANG, Hector PEREZ, Pankaj Singh GAUTAM, David WEST
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Patent number: 11633721Abstract: A multilayer supported oxidative coupling of methane (OCM) catalyst composition (support, first single oxide layer, one or more mixed oxide layers, optional second single oxide layer) characterized by formula AaZbEcDdOx/support; A is alkaline earth metal; Z is first rare earth element; E is second rare earth element; D is redox agent/third rare earth element; the first, second, third rare earth element are not the same; a=1.0; b=0.1-10.0; c=0.1-10.0; d=0-10.0; x balances oxidation states; first single oxide layer (Zb1Ox1, b1=0.1-10.0; x1 balances oxidation states) contacts support and one or more mixed oxide layers; one or more mixed oxide layers (Aa2Zb2Ec2Dd2Ox2, a2=1.0; b2=0.1-10.0; c2=0.1-10.0; d2=0-10.0; x2 balances oxidation states; AaZbEcDdOx and Aa2Zb2Ec2Dd2Ox2 are different) contacts first single oxide layer and optionally second single oxide layer, and second single oxide layer (AO), when present, contacts one or more mixed oxide layers and optionally first single oxide layer.Type: GrantFiled: September 21, 2020Date of Patent: April 25, 2023Assignee: Sabic Global Technologies, B.V.Inventors: Wugeng Liang, Luanyi Li, Hector Perez, Pankaj Gautam, David West
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Publication number: 20230030055Abstract: The invention relates to a composition containing a catalyst having high catalytic stability for conducting oxidative coupling of methane (OCM) at high carbon efficiency, while improving both methane and oxygen conversion. Particularly, the inventive catalyst is a metal oxide supported catalyst, which contains an alkali metal promoter and a mixed metal oxide component having at least one alkali earth metal and at least one rare earth metal. The metal oxide support is selected in a manner, such that at least a portion of the metal oxide support is capable of reacting with at least a part or whole of the alkali metal promoter under conditions of calcination during catalyst preparation. The invention further provides a method for preparing such a metal oxide supported catalyst composition, using a calcination process. Additionally, the invention further describes a process for producing C2+ hydrocarbons, using such a catalyst composition.Type: ApplicationFiled: November 10, 2020Publication date: February 2, 2023Inventors: Wugeng LIANG, Dick NAGAKI, Yu-Lun FANG, David WEST
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Patent number: 11541375Abstract: The invention relates to a composition containing a catalyst suitable for producing ethylene and other C2+ hydrocarbons at high selectivity while improving both methane conversion and product yield. Particularly, the catalyst contains mixed metal oxides having at least one alkali earth metal and at least one rare earth metal along with an alkali metal promoter in the form of an alkali metal or in the form of an alkali metal tungstate. The invention further provides a method for preparing such a composition, using a calcination process to calcine the alkali metal promoters together with mixed metal oxides. Additionally, the invention further describes a process for producing C2+ hydrocarbons, using such a composition.Type: GrantFiled: July 27, 2020Date of Patent: January 3, 2023Assignee: Sabic Global Technologies, B.V.Inventors: Wugeng Liang, David West, Hector Perez, Vidya Sagar Reddy Sarsani, Luanyi Elizabeth Li
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Publication number: 20220387973Abstract: A multilayer supported oxidative coupling of methane (OCM) catalyst composition (support, first single oxide layer, one or more mixed oxide layers, optional second single oxide layer) characterized by formula AaZbEcDdOx/support; A is alkaline earth metal; Z is first rare earth element; E is second rare earth element; D is redox agent/third rare earth element; the first, second, third rare earth element are not the same; a=1.0; b=0.1-10.0; c=0.1-10.0; d=0-10.0; x balances oxidation states; first single oxide layer (Zb1Ox1, b1=0.1-10.0; x1 balances oxidation states) contacts support and one or more mixed oxide layers; one or more mixed oxide layers (Aa2Zb2Ec2Dd2Ox2, a2=1.0; b2=0.1-10.0; c2=0.1-10.0; d2=0-10.0; x2 balances oxidation states; AaZbEcDdOx and Aa2Zb2Ec2Dd2Ox2 are different) contacts first single oxide layer and optionally second single oxide layer, and second single oxide layer (AO), when present, contacts one or more mixed oxide layers and optionally first single oxide layer.Type: ApplicationFiled: September 21, 2020Publication date: December 8, 2022Inventors: Wugeng Liang, Luanyi Li, Hector Perez, Pankaj Gautam, David West
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Publication number: 20220380275Abstract: A multilayer supported oxidative coupling of methane (OCM) catalyst composition (alpha-Al2O3 support, first single oxide layer, one or more mixed oxide layers, optional second single oxide layer) characterized by formula AaZbEcDdOx/alpha-Al2O3; A is alkaline earth metal; Z is first rare earth element; E is second rare earth element; D is redox agent/third rare earth element; the first, second, third rare earth element are not the same; a=1.0; b=0.1-10.0; c=0.1-10.0; d=0-10.0; x balances oxidation states; first single oxide layer (Zb1Ox1, b1=0.1-10.0; x1 balances oxidation states) contacts alpha-Al2O3 support and one or more mixed oxide layers; one or more mixed oxide layers (Aa2Zb2Ec2Dd2Ox2, a2=1.0; b2=0.1-10.0; c2=0.1-10.0; d2=0-10.Type: ApplicationFiled: September 21, 2020Publication date: December 1, 2022Inventors: Wugeng Liang, Azim Ali, Hector Perez, Jae Hyung Kim, Pankaj Gautam, David West
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Patent number: 11458458Abstract: An OCM catalyst composition characterized by general formula AaLabEcDdOx; wherein A is an alkaline earth metal; wherein E is a first rare earth element; wherein D is a redox agent or a second rare earth element; wherein the first rare earth element and second rare earth element are different; wherein a is 1.0; wherein b is 0.01-10.0; wherein c is 0-10.0; wherein d is 0-10.0; and wherein x balances the oxidation states. The alkaline earth metal is selected from the group consisting of Mg, Ca, Sr, Ba, and combinations thereof. The first rare earth element and the second rare earth element can each independently be selected from the group consisting of Sc, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Y, Tb, Dy, Ho, Er, Tm, Yb, Lu, and combinations thereof. The redox agent is selected from the group consisting of Mn, W, Bi, Sb, Sn, Ce, Pr, and combinations thereof.Type: GrantFiled: March 21, 2018Date of Patent: October 4, 2022Assignee: Sabic Global Technologies, B.V.Inventors: Wugeng Liang, David West, Luanyi Li, Vidya Sagar Reddy Sarsani, Hector Perez, James W. Kauffman
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Patent number: 11439984Abstract: A supported oxidative coupling of methane (OCM) catalyst comprising a support and an OCM catalytic composition characterized by the general formula AaZbEcDdOx; wherein A is an alkaline earth metal; wherein Z is a first rare earth element; wherein E is a second rare earth element; wherein D is a redox agent or a third rare earth element; wherein the first rare earth element, the second rare earth element, and the third rare earth element, when present, are not the same; wherein a is 1.0; wherein b is from about 0.1 to about 10.0; wherein c is from about 0.1 to about 10.0; wherein d is from about 0 to about 10.0; and wherein x balances the oxidation states.Type: GrantFiled: March 17, 2020Date of Patent: September 13, 2022Assignee: Sabic Global Technologies, B.V.Inventors: Wugeng Liang, Luanyi Li, Hector Perez, Jae Hyung Kim, Pankaj Gautam, Vidya Sagar Reddy Sarsani, David West
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Publication number: 20220258134Abstract: The invention relates to a composition containing a catalyst suitable for producing ethylene and other C2+ hydrocarbons at high selectivity while improving both methane conversion and product yield. Particularly, the catalyst contains mixed metal oxides having at least one alkali earth metal and at least one rare earth metal along with an alkali metal promoter in the form of an alkali metal or in the form of an alkali metal tungstate. The invention further provides a method for preparing such a composition, using a calcination process to calcine the alkali metal promoters together with mixed metal oxides. Additionally, the invention further describes a process for producing C2+ hydrocarbons, using such a composition.Type: ApplicationFiled: July 27, 2020Publication date: August 18, 2022Inventors: Wugeng Liang, David West, Hector Perez, Vidya Sagar Reddy Sarsani, Luanyi Elizabeth Li
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Publication number: 20220008897Abstract: A catalyst composition, suitable for producing ethylene and other C2+ hydrocarbons, from methane. The composition comprises a blended product of two distinct catalyst components, blended at such synergistic proportions that results in a catalyst having high ethylene selectivity while maintaining low ethyne selectivity and sufficient catalytic activity rate. The invention further provides a method for preparing such a catalyst composition and a process for producing ethylene and other C2+ hydrocarbons, using such a catalyst composition.Type: ApplicationFiled: December 4, 2019Publication date: January 13, 2022Applicant: SABIC Global Technologies B.V.Inventors: Wugeng LIANG, David WEST, Hector PEREZ, Sagar SARSANI, Luanyi Elizabeth LI
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Patent number: 11154841Abstract: An OCM nanoplate catalyst comprising ?25 wt. % nanoplates; wherein a nanoplate is a three-dimensional object defined in accordance with ISO/TS 80004-2:2015; wherein a nanoplate is characterized by a first external dimension (thickness (t)?100 nm), a second external dimension (length (l)>t), and a third external dimension (width (w)>t); wherein l and w can be the same or different; and wherein l?5 t, w?5 t, or l?5 t and w?5 t; and wherein the OCM nanoplate catalyst has general formula AaZbEcDdOx; wherein A=alkaline earth metal; Z=first rare earth element; E=second rare earth element; D=redox agent/third rare earth element; wherein the first, second, and third rare earth element are not the same; wherein a=1.0; wherein b=1.0 to 3.0; wherein c=0 to 1.5; wherein d=0 to 1.5; wherein (b>(c+d)); and wherein x balances the oxidation states.Type: GrantFiled: August 7, 2019Date of Patent: October 26, 2021Assignee: Sabic Global Technologies, B.V.Inventors: Wugeng Liang, Luanyi Li, Vidya Sagar Reddy Sarsani, Hector Perez, David West
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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: 11090633Abstract: A catalyst composition, suitable for producing ethylene and other C2+ hydrocarbons from methane. The composition includes a blended product of two distinct catalyst components, blended at such synergistic proportions, that results in a catalyst having high C2+ hydrocarbon selectivity while maintaining an overall sufficient catalyst activity and low ethyne selectivity. Methods for preparing such a catalyst composition and a process for producing C2+ hydrocarbons using such a catalyst composition are provided.Type: GrantFiled: January 15, 2020Date of Patent: August 17, 2021Assignee: SABIC GLOBAL TECHNOLOGIES B.V.Inventors: Wugeng Liang, David West, Hector Perez, Sagar Sarsani, Luanyi Elizabeth Li, Pankaj Gautam
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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: 20210154644Abstract: An OCM nanoplate catalyst comprising >25 wt. % nanoplates; wherein a nanoplate is a three-dimensional object defined in accordance with ISO/TS 80004-2:2015; wherein a nanoplate is characterized by a first external dimension (thickness (t)>100 nm), a second external dimension (length (l)?t), and a third external dimension (width (w)?t); wherein l and w can be the same or different; and wherein l?5 t, w?5 t, or l?5 t and w?5 t; and wherein the OCM nanoplate catalyst has general formula AaZbEcDdOx; wherein A=alkaline earth metal; Z=first rare earth element; E=second rare earth element; D=redox agent/third rare earth element; wherein the first, second, and third rare earth element are not the same; wherein a=1.0; wherein b=1.0 to 3.0; wherein c=0 to 1.5; wherein d=0 to 1.5; wherein (b>(c+d)); and wherein x balances the oxidation states.Type: ApplicationFiled: August 7, 2019Publication date: May 27, 2021Inventors: Wugeng LIANG, Luanyi LI, Vidya Sagar Reddy SARSANI, Hector PEREZ, David WEST
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Patent number: 10995044Abstract: Methods of performing a startup of an oxidative coupling of methane reaction to produce C2+ hydrocarbons are described. The methods can include incrementally varying startup parameters of the oxidative methane reactor and using the feed gas as a coolant such that high C2+ hydrocarbon selectivity is achieved.Type: GrantFiled: July 1, 2020Date of Patent: May 4, 2021Assignee: SABIC GLOBAL TECHNOLOGIES B.V.Inventors: Sagar Sarsani, David West, Vemuri Balakotaiah, Wugeng Liang, Jonathan Banke