Abstract: Methods of producing metal catalysts can include mixing two or more metal salts and an aluminum salt in water to produce a metal catalyst precursor solution; mixing the metal catalyst precursor solution and an alkali metal buffer solution to produce a precipitate; ion exchanging the alkali metal in the precipitate for a non-alkali cation to produce a low-alkali metal precipitate comprising 3 wt % or less alkali metal by weight of the precipitate on a dry basis; producing a powder from the low-alkali metal precipitate; and calcining the powder to produce a metal catalyst. Such metal catalysts may be useful in producing bifunctional catalyst systems that are useful in, among other things, converting syngas to dimethyl ether in a single reactor.
Type:
Grant
Filed:
August 13, 2020
Date of Patent:
May 23, 2023
Assignee:
EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY
Inventors:
Chuansheng Bai, Majosefina Cunningham, Jihad M. Dakka, Preeti Kamakoti, Aruna Ramkrishnan, Anjaneya S. Kovvali, Anita S. Lee
Abstract: Aspects of the present disclosure are directed towards a method of making a scandium metal-doped nanoparticle. The method includes mixing a cobalt salt, an iron salt, and an acid in water to form a solution including CoFe2O4; mixing a nickel-iron oxide solution and a scandium oxide solution to form a solution including NiSc0.03Fe1.97O4; mixing the cobalt iron oxide solution and the nickel scandium iron oxide solution to form a sol-gel mixture including CoFe2O4/(NiSc0.03Fe1.97O4)x (0?x?5); adjusting the pH of the sol-gel mixture 6 to 8 with a base to form a first mixture; heating the first mixture to form a powder, and calcining the powder to form the scandium metal-doped nanoparticle of formula CoFe2O4/(NiSc0.03Fe1.97O4)x (0?x?5). The present disclosure also describes an electrode including the scandium metal-doped nanoparticles. The electrode may be used in magnetic supercapacitors.
Type:
Grant
Filed:
June 3, 2022
Date of Patent:
May 16, 2023
Assignee:
KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
Abstract: An activated carbon-based media for efficient removal of chloramines as well as chlorine and ammonia from an aqueous stream is presented, and a method for making the same. The method involves preparing activated carbon that remove chloramines efficiently from chloramine-rich aqueous media. In particular, this application relates to the use of high performance catalytically active carbon for an efficient removal of chloramine from drinking water in the form of a solid carbon block or granular carbon media. The activated carbon is treated with a nitrogen-rich compound, such as, melamine.
Type:
Grant
Filed:
December 11, 2020
Date of Patent:
May 16, 2023
Assignee:
Mannon Water (Singapore) PTE. LTD.
Inventors:
Nabin Kumar Pal, Ramachandra S R Swamy, Sridhar Chowdasandra, Jola Solomon
Abstract: A magnesium halide-supported titanium procatalyst, a catalyst prepared therefrom, an enhanced catalyst consists essentially of a product of a reaction of the magnesium halide-supported titanium procatalyst and a hydrocarbylaluminoxane. Also methods of preparing the (pro)catalysts, a method of polymerizing an olefin, and a polyolefin made by the polymerization method.
Type:
Grant
Filed:
September 23, 2021
Date of Patent:
May 16, 2023
Assignee:
DOW GLOBAL TECHNOLOGIES LLC
Inventors:
Linfeng Chen, Marc A. Springs, Mehmet Demirors
Abstract: Disclosed are methods for preparing cannabigerol (CBG) or a CBG analog, embodiments of the method comprising providing a compound (I); combining the compound (I) with geraniol and a solvent to form a reaction mixture; and combining the reaction mixture with an acid catalyst to form a product mixture comprising the CBG or the CBG homolog. The method may further comprise separating the CBG or the CBG analog from the product mixture and may further comprise purifying the CBG or CBG analog. Methods for preparing cannabigerolic acid (CBGA) or a cannabigerolic acid analog are also disclosed. The present disclosure also provides highly purity CBG, CBGA, and analogs thereof.
Type:
Grant
Filed:
March 21, 2022
Date of Patent:
May 9, 2023
Inventors:
Daniel Brumar, Mahmood Azizpour Fard, Ben Geiling, Mohammadmehdi Haghdoost Manjili
Abstract: According to the present disclosure, a method of fabricating a metal-carbon fibrous structure is provided. The method comprises the steps of: (a) forming a fibrous support structure comprising composite nanocrystals and polymeric fibers, wherein each of the composite nanocrystals comprises metal ions connected by organic ligands; (b) growing the composite nanocrystals on the fibrous support structure; and (c) subjecting the fibrous support structure of step (b) to carbonization to form the metal-carbon fibrous structure, wherein the metal-carbon fibrous structure comprises metal nanoparticles derived from the composite nanocrystals. A metal-carbon fibrous structure comprising carbon based fibers arranged to form a porous network and the carbon based fibers are doped with metal nanoparticles, wherein the carbon based fibers have surfaces which comprise graphitic carbon, is also disclosed herein.
Type:
Grant
Filed:
April 6, 2021
Date of Patent:
May 9, 2023
Assignee:
Agency for Science, Technology and Research
Inventors:
Suxi Wang, Xu Li, Andy Hor, Zhongxing Zhang, Kia Jia Benny Chew
Abstract: The present invention provides a catalyst composition for the production of olefins from lighter alkanes by oxidative dehydrogenation route and methods of making the dehydrogenation catalyst composites.
Abstract: The present disclosure refers to increasing the catalytic efficiency of Weyl semimetals by subjecting Weyl semimetals to an external magnetic field of greater than 0 T, for example greater than 0.1 T. In a preferred embodiment of the present disclosure the Weyl semimetal is selected from the group consisting of NbP, TaP, NbAs and TaAs.
Type:
Grant
Filed:
February 6, 2019
Date of Patent:
May 2, 2023
Assignee:
MAX PLANCK GESELLSCHAFT ZUR FÖRDERUNG DER WISSENSCHAFTEN EV
Abstract: Methods of producing metal catalysts can include mixing two or more metal salts and an aluminum salt in water to produce a metal catalyst precursor solution having a pH of about 2.5 to about 4.0; mixing the metal catalyst precursor solution and a basic solution having a pH of about 10 to about 13 to produce a mixture with a pH of about 6 to about 7 and a precipitate; producing a powder from the precipitate; and calcining the powder to produce a metal catalyst. Such metal catalysts may be useful in producing bifunctional catalyst systems that are useful in, among other things, converting syngas to dimethyl ether in a single reactor.
Type:
Grant
Filed:
August 13, 2020
Date of Patent:
May 2, 2023
Assignee:
EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY
Abstract: A preparation method of a lanthanum-iron-loaded carbon nanotube film for environmental restoration is provided, it belongs to the technical field of composite materials. The preparation method includes: mixing carbon nanotubes with a lanthanum-iron mixed solution to obtain a suspension, then obtaining a first reaction solution by a constant temperature oscillation reaction; adding alkali liquor into the first reaction solution to obtain a second reaction solution by an oscillation reaction; carrying out a solid-liquid separation on the second reaction solution, adding the obtained solid after drying into an organic solution, and obtaining a third reaction solution by ultrasonic mixing; centrifuging the third reaction solution to obtain a supernatant; obtaining a lanthanum-iron-loaded carbon nanotube film by suction filtration.
Type:
Grant
Filed:
October 25, 2022
Date of Patent:
May 2, 2023
Assignee:
BEIJING NORMAL UNIVERSITY, ZHUHAI
Inventors:
Yi Yang, Yinuo Wang, Haowen Lin, Chenyang Zheng, Ruikun Xu, Huiqi Zhu, Xuhui Xu, Lulu Bao
Abstract: Methods for producing a carbon-free, PGM-free support for PGM catalyst. The catalytic material comprises PGM metals disposed on a carbon-free support which is catalytic but free of PGM.
Abstract: Described herein are methods of making the visible light photocatalysts without the use of templates that can comprise: (1) mixing a metal precursor, an alcohol, and a solvent to form a self assembled shapes at a temperature between the freezing point of the solvent and the boiling point of the solvent, (2) strengthening the shapes at a temperature of about 35° C. to about 300° C. for about 30 minutes to about 96 hours, and then (3) annealing the shapes at a temperature of between about 450° C. to about 750° C. for between about 4 hours to about 16 hours in a gaseous atmosphere. Also described are photocatalysts created by the described methods.
Type:
Grant
Filed:
April 22, 2020
Date of Patent:
April 11, 2023
Assignee:
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
Abstract: In various embodiments, an air purifier capable of destroying and deactivating airborne contaminants such as SARS-CoV-2 is described. The air purifier comprises a photocatalytic system comprising at least one photoactivated semiconductor photocatalyst and a lamp configured to irradiate and excite the at least one photoactivated semiconductor photocatalyst to generate reductive and/or oxidative reactive species from oxygen and/or water on the photocatalyst surface. In various embodiments, the photocatalytic system comprises a stack of PCB cards, each card having a photocatalytic layer disposed thereon, or a 3-dimensionally ordered macroporous (3-DOM) structure comprising an open cell lattice.
Type:
Grant
Filed:
April 1, 2021
Date of Patent:
April 11, 2023
Assignee:
PROMETHIUM LIMITED
Inventors:
Devon Paul Scheg, Xavier Isaiah Morgan-Lange
Abstract: In various embodiments, an air purifier capable of destroying and deactivating airborne contaminants such as SARS-CoV-2 is described. The air purifier comprises a photocatalytic system comprising at least one photoactivated semiconductor photocatalyst and a lamp configured to irradiate and excite the at least one photoactivated semiconductor photocatalyst to generate reductive and/or oxidative reactive species from oxygen and/or water on the photocatalyst surface. In various embodiments, the photocatalytic system comprises a stack of PCB cards, each card having a photocatalytic layer disposed thereon, or a 3-dimensionally ordered macroporous (3-DOM) structure comprising an open cell lattice.
Type:
Grant
Filed:
August 31, 2020
Date of Patent:
March 28, 2023
Assignee:
PROMETHIUM LIMITED
Inventors:
Xavier Isaiah Morgan-Lange, Devon Paul Scheg, Harry Larson
Abstract: A method of preparing a mesoporous carbon composite material having a mesoporous carbon phase and preformed metal nanoparticles located within the mesoporous carbon phase. The present invention also relates to a mesoporous carbon composite material and to a substrate having a film of such mesoporous carbon composite material.
Type:
Grant
Filed:
February 20, 2018
Date of Patent:
March 21, 2023
Assignee:
TECHNISCHE UNIVERSITÄT BERLIN
Inventors:
Denis Bernsmeier, Ralph Krähnert, René Sachse
Abstract: A superacid polymeric catalyst having both Lewis acidity and Brønsted acidity is described, along with methods of making and methods of using the same.
Type:
Grant
Filed:
October 29, 2018
Date of Patent:
March 21, 2023
Assignee:
TJie University of Toledo
Inventors:
Ana C. Alba Rubio, Maria R. Coleman, Subhash Kalidindi, Anup S. Joshi, Ibeh S. Omodolor
Abstract: A method for preparing a sulfur-carbon composite including: (a) stirring a porous carbon material in a solvent mixture including a carbonate-based compound and a volatile solvent and then drying; and (b) mixing the dried porous carbon material with sulfur and then depositing the sulfur in and on the porous carbon material by a heat melting method. A method for preparing a sulfur-carbon composite including: (a) mixing and stirring a porous carbon material and sulfur in a solvent mixture including a carbonate-based compound and a volatile solvent and then drying; and (b) depositing the sulfur in and on the porous carbon material by a heat melting method. In the sulfur-carbon composite, sulfur present in and on the porous carbon material, a proportion of ?-monoclinic sulfur phase to sulfur contained in the sulfur-carbon composite is 90% or more based on a total molar ratio of sulfur.
Type:
Grant
Filed:
October 29, 2018
Date of Patent:
March 21, 2023
Assignee:
LG ENERGY SOLUTION, LTD.
Inventors:
Soohyun Kim, Suenghoon Han, Kwonnam Sohn, Doo Kyung Yang
Abstract: In the present disclosure, a composite oxide catalyst capable of effectively suppressing side reactions at the time of dehydrogenation of C4 hydrocarbons having single bonds or one double bond and a process for preparing butadiene, in particular 1,3-butadiene, with a high selectivity and a high yield using the same are described.
Type:
Grant
Filed:
April 7, 2021
Date of Patent:
March 21, 2023
Assignees:
SK Innovation Co., Ltd., SK Geo Centric Co., Ltd.
Abstract: The disclosure relates to a method for making a photocatalytic structure, the method comprising: providing a carbon nanotube structure comprising a plurality of carbon nanotubes intersected with each other; a plurality of openings being defined by the plurality of carbon nanotubes; forming a photocatalytic active layer on the surface of the carbon nanotube structure; applying a metal layer pre-form on the surface of the photocatalytic active layer; and annealing the metal layer pre-form.
Type:
Grant
Filed:
August 10, 2021
Date of Patent:
March 14, 2023
Assignees:
Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.