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公开(公告)号：US20230201811A1
公开(公告)日：2023-06-29
申请号：US17866889
申请日：2022-07-18
Applicant: Suzhou University of Science and Technology
Inventor： Chengbao Liu , Fei Tang , Tao Jin , Feng Chen , Junchao Qian , Zhigang Chen
CPC classification number: B01J27/26 , B01J21/18 , B01J35/004 , B01J37/06 , B01J37/0203 , B01J37/0207 , B01J37/084 , C02F2305/10 , C02F2101/308
Abstract: The present disclosure provides a synthesis method of a g-C3N4/C composite material based on a hollyhock stalk, including the following steps: (1) pretreatment of hollyhock stalks; and (2) fabrication of the g-C3N4/C composite material. In this method, with the hollyhock stalk as a carbon skeleton, g-C3N4 is spread on a template surface to form a laminated layer, and a composite system with a special structure is constructed. Compared with pure phase g-C3N4, the composite material substantially increases specific surface area and has a clear interface; the carbon skeleton not only functions as a rigid support, but also increases the electron transfer efficiency of the composite material, thereby improving the separation efficiency of photogenerated carriers and the utilization rate of visible light. Raw materials used in the method are inexpensive and environmentally friendly, which can be used for industrial production and bulk production of eco-friendly materials for harnessing environmental organic pollutants.
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公开(公告)号：US11673127B2
公开(公告)日：2023-06-13
申请号：US16807500
申请日：2020-03-03
Inventor： Brandon J. O'Neill , Scott J. Weigel
CPC classification number: B01J29/703 , B01J21/04 , B01J37/0072 , B01J37/06 , C07C1/20 , B01J2229/38 , C07C2529/70
Abstract: Methods are provided for formulation of catalysts with improved catalyst exposure lifetimes under oxygenate conversion conditions. In various additional aspects, methods are described for performing oxygenate conversion reactions using such catalysts with improved catalyst exposure lifetimes. The catalyst formulation methods can include formulation of oxygenate conversion catalysts with binders that are selected from binders having a surface area of roughly 250 m2/g or less, or 200 m2/g or less. In various aspects, during formulation, a weak base can be added to the zeotype crystals, to the binder material, or to the mixture of the zeotype and the binder. It has been unexpectedly discovered that addition of a weak base, so that the weak base is present in at least one component of the binder mixture prior to formulation, can result in longer catalyst exposure lifetimes under methanol conversion conditions.
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公开(公告)号：US11666892B2
公开(公告)日：2023-06-06
申请号：US17265989
申请日：2020-09-07
Inventor： Changyong Wu , Yuexi Zhou , Liya Fu
IPC: B01J23/889 , B01J21/04 , B01J37/02 , B01J37/04 , B01J37/08 , B01J37/06 , B01J35/08 , B01J35/02 , C02F1/72 , C02F1/78 , C02F101/30 , C02F103/36
CPC classification number: B01J23/8892 , B01J21/04 , B01J35/023 , B01J35/08 , B01J37/0207 , B01J37/0213 , B01J37/04 , B01J37/06 , B01J37/08 , C02F1/725 , C02F1/78 , C02F2101/30 , C02F2103/365
Abstract: A method for preparing a supported two-component metal oxide ozone catalytic oxidation catalyst for an advanced treatment of a petrochemical wastewater is provided. The supported two-component metal-oxide ozone catalytic oxidation catalyst is prepared from commercially-available active alumina balls by the steps of carrier activation, impregnating liquid preparation, carrier impregnation, catalyst roasting, and catalyst cleaning. The supported two-component metal oxide ozone catalytic oxidation catalyst has product stability, is reusable, and is of significance in application of ozone catalytic oxidation technologies as well as energy conservation and consumption reduction for petrochemical wastewater treatment plants.
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34.发明公开公开(公告)号：US20230149906A1
公开(公告)日：2023-05-18
申请号：US17802783
申请日：2021-02-19
Inventor： Barry HUANG , Perlyn KOH , Szu Hwee NG , Jesline Tang
IPC: B01J23/10 , C01G25/00 , B01J35/02 , B01J35/10 , B01J37/04 , B01J37/03 , B01J37/08 , B01J37/06 , B01J37/00
CPC classification number: B01J23/10 , C01G25/006 , B01J35/026 , B01J35/1009 , B01J35/1014 , B01J35/1019 , B01J37/04 , B01J37/031 , B01J37/088 , B01J37/06 , B01J37/0036 , C01P2002/50 , C01P2004/61 , C01P2004/62 , C01P2006/13
Abstract: Disclosed herein are mixed oxide compositions comprising zirconium and cerium having a surprisingly small particle sizes. The compositions disclosed herein contain zirconium, cerium, optionally yttrium, and optionally one or more other rare earths other than cerium and yttrium. The compositions exhibit a particle size characterized by a D90 value of about 5 um to about 25 μm and a D99 value of about 5 μm to about 50 μm. Further disclosed are processes of producing these compositions using oxalic acid and an alcohol and heating in the process. The compositions can be used as a catalyst and/or part of an automobile exhaust system.
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35.发明授权公开(公告)号：US11648533B2
公开(公告)日：2023-05-16
申请号：US17119314
申请日：2020-12-11
Applicant: Marmon Water (Singapore) Pte. Ltd.
Inventor： Nabin Kumar Pal , Ramachandra S R Swamy , Sridhar Chowdasandra , Jola Solomon
IPC: B01J21/18 , B01J35/02 , B01J37/06 , B01J37/02 , B01J37/08 , B01J35/10 , B01J31/02 , C02F1/28 , C02F101/12 , C02F101/16
CPC classification number: B01J21/18 , B01J31/0244 , B01J35/026 , B01J35/1023 , B01J35/1028 , B01J37/0207 , B01J37/06 , B01J37/08 , C02F1/288 , C02F1/283 , C02F1/285 , C02F2101/12 , C02F2101/16
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.
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Patent Agency Ranking
公开(公告)号：US20190247830A1
公开(公告)日：2019-08-15
申请号：US16335020
申请日：2016-09-20
Applicant: HighChem Technology Co., LTD.
Inventor： Jianyu CHAI , Kennin SO , Huaduan ZHAN , Yongye LI
IPC: B01J21/04 , B01J23/89 , B01J37/02 , B01J37/06 , B01J37/18 , B01J35/08 , B01J37/10 , B01J35/10 , B01J35/00
CPC classification number: B01J21/04 , B01J23/8906 , B01J35/0026 , B01J35/08 , B01J35/1009 , B01J35/1076 , B01J37/0213 , B01J37/0236 , B01J37/06 , B01J37/10 , B01J37/18
Abstract: The present application relates to a catalyst carrier for use in the synthesis of dialkyl oxalates by gas-phase catalytic coupling of carbon monoxide comprising microscopic fine pores and one or more macroscopic large pores running through the catalyst carrier, wherein the ratio of the average pore diameter of each macroscopic large pore to the average diameter of the catalyst carrier is 0.2 or more. The present application also relates to a catalyst, comprising the catalyst carrier, an active component and an optional auxiliary, supported on the catalyst carrier. The catalyst according to the present invention not only catalyze effectively coupling of carbon monoxide in a gas phase to form dialkyl oxalate, but also improves heat dissipation, reduces pressure drop, reduces the amount applied of precious metal such as palladium, thereby reducing the use cost of the catalyst and production cost of dialkyl oxalate and then facilitating industrial mass production of dialkyl oxalate.
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37.发明申请公开(公告)号：US20190240646A1
公开(公告)日：2019-08-08
申请号：US16328266
申请日：2017-06-22
Applicant: Nanjing University
Inventor： Jinnan WANG , Suqian XU , Ning SHAO
CPC classification number: B01J23/8892 , B01J23/889 , B01J35/10 , B01J35/1019 , B01J35/1038 , B01J35/1061 , B01J37/0018 , B01J37/009 , B01J37/04 , B01J37/06 , B01J37/08 , C01G49/00 , C01G49/0072 , C01P2002/72 , C01P2004/03 , C01P2006/12 , C01P2006/14 , C01P2006/16 , C02F1/72 , C02F1/722 , C02F1/725 , C02F2101/38 , C02F2101/40 , C02F2305/026 , Y02P20/584
Abstract: The present invention discloses a mesoporous manganese ferrite Fenton-like catalyst and preparation method and application thereof and pertains to the field of preparation of Fenton-like catalysts. The present invention uses KIT-6 as a hard template agent to synthesize mesoporous manganese ferrite catalyst. The prepared mesoporous manganese ferrite and hydrogen peroxide constitute a Fenton-like system oxidation wastewater treatment system to carry out efficient removal and mineralization of organic pollutants in wastewater. The preparation method of the present invention is simple and efficient. The prepared Fenton-like catalyst has a mesoporous structure and a relatively large specific surface area. It can provide more adsorption sites and catalytic site and efficiently degrade pollutants in a wide pH range (acidic, neutral and even alkaline) and solves the problem that conventional Fenton reaction occurs only under an acidic condition and a large amount of iron sludge is generated during reaction, causing secondary pollution. Further, the catalyst can be used cyclically and easily separated from the water solution and recovered after use.
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38.发明申请公开(公告)号：US20190201870A1
公开(公告)日：2019-07-04
申请号：US16234053
申请日：2018-12-27
Applicant: Marmon Water (Singapore) Pte. Ltd.
Inventor： Nabin Kumar Pal , Ramachandra Swamy , Sridhar Chowdasandra , Jola Solomon
CPC classification number: B01J21/18 , B01J31/0244 , B01J35/026 , B01J35/1023 , B01J35/1028 , B01J37/0207 , B01J37/06 , B01J37/08 , C02F1/283 , C02F1/285 , C02F1/288 , C02F2101/12 , C02F2101/16
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.
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39.发明申请公开(公告)号：US20190118168A1
公开(公告)日：2019-04-25
申请号：US16091091
申请日：2017-08-01
Applicant: LG CHEM, LTD.
Inventor： Ji Yeon KIM , Jun Seon CHOI , Joo Young CHEON , Wang Rae JOE , Kyung Soo KIM
CPC classification number: B01J27/16 , B01J21/066 , B01J27/18 , B01J35/002 , B01J35/1009 , B01J35/1019 , B01J35/1061 , B01J37/00 , B01J37/03 , B01J37/031 , B01J37/04 , B01J37/06 , B01J37/08 , C07D207/444 , C07D207/448
Abstract: A dehydration catalyst for preparing N-substituted maleimide, which may minimize formation of by-products, is reusable because its activity is not reduced significantly even after being reused several times, and may maintain its reaction activity for a long time, a preparation method thereof, and a method of preparing N-substituted maleimide, are provided.
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公开(公告)号：US20190105645A1
公开(公告)日：2019-04-11
申请号：US16089513
申请日：2017-06-22
Applicant: SABIC GLOBAL TECHNOLOGIES B.V.
CPC classification number: B01J31/10 , B01J37/0217 , B01J37/0221 , B01J37/06 , B01J2231/347 , C07C37/20 , C07C39/16
Abstract: In an embodiment, a catalyst comprises a porous carrier having 5 to 200 pores per 2.54 centimeters and a pore volume of at least 90 vol % based on the total volume of the porous carrier; wherein the porous carrier comprises one or both of carbon and a metal; and a sulfonated, cross-linked polystyrene located on at least part of a surface of the porous carrier.
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