-
公开(公告)号：US10040773B2
公开(公告)日：2018-08-07
申请号：US15054447
申请日：2016-02-26
摘要： A silver-based ethylene epoxidation catalyst is provided that exhibits improved performance, i.e., selectivity and activity decline. The catalyst that exhibits the improved performance includes greater than about 20% by weight of silver disposed on an alpha-alumina carrier, and a promoting amount of one or more promoters disposed on the alpha-alumina carrier. The silver is present on the alpha-alumina carrier as silver particles having a diameter of greater than about 150 nm and a distribution density of about 20 particles per 1 square micron or less.
-
公开(公告)号：US10029238B2
公开(公告)日：2018-07-24
申请号：US15343360
申请日：2016-11-04
发明人： Chang Hyun Ko , Gyeong Ju Seo , Min Su Jang , Seong Mi Ahn
IPC分类号： B01J23/48 , B01J23/50 , B01J23/75 , B01J21/04 , B01J37/34 , B01J35/00 , B01J37/02 , B01J35/02 , B01J35/08
摘要： A method for preparing a catalyst having catalytically active materials selectively impregnated or supported only in the surface region of the catalyst particle using the mutual repulsive force of a hydrophobic solution and a hydrophilic solution and the solubility difference to a metal salt precursor between the hydrophobic and hydrophilic solutions. The hydrophobic solvent is a C2-C6 alcohol. The hydrophobic solvent is introduced into the catalyst support and then removed of a part of the pores connected to the outer part of the catalyst particle by drying under appropriate conditions. Then, a hydrophilic solution containing a metal salt is introduced to occupy the void spaces removed of the hydrophobic solvent, and the catalyst particle is dried at a low rate to selectively support or impregnate the catalytically active material or the precursor of the catalytically active material only in the outer part of the catalyst particle.
-
公开(公告)号：US10003084B2
公开(公告)日：2018-06-19
申请号：US14413395
申请日：2013-06-28
IPC分类号： H01M4/92 , H01M4/90 , H01M8/1018 , B01J23/14 , B01J23/42 , B01J23/44 , B01J23/46 , B01J23/50 , B01J23/52 , B01J23/755 , B82Y40/00
CPC分类号： H01M4/926 , B01J23/14 , B01J23/42 , B01J23/44 , B01J23/462 , B01J23/50 , B01J23/52 , B01J23/755 , B82Y40/00 , H01M4/9041 , H01M4/9083 , H01M4/92 , H01M4/921 , H01M8/1018 , H01M2008/1095 , H01M2300/0082
摘要： Methods of forming metal nanoparticle-graphene composites are provided. The methods can include mixing a metal precursor with graphite oxide in the presence of a liquid medium to form a metal precursor-graphite oxide mixture, and exfoliating the graphite oxide and reducing the metal precursor in the metal precursor-graphite oxide mixture to deposit metal nanoparticles on a first major surface of a graphene sheet formed by exfoliation of the graphite oxide.
-
44.发明申请公开(公告)号：US20180154339A1
公开(公告)日：2018-06-07
申请号：US15653874
申请日：2017-07-19
发明人： Joze Bevk
IPC分类号： B01J23/50 , H01M4/92 , B01D53/86 , B01D53/88 , B01J23/40 , B01J23/52 , B01J23/89 , H01M4/90 , H01M4/88 , D01F8/18 , B21C37/04 , B01J35/06 , F01N3/28 , H01M4/86 , H01M4/02
CPC分类号： B01J23/50 , B01D53/8675 , B01D53/8678 , B01D53/88 , B01D2255/1021 , B01D2255/106 , B01D2255/20761 , B01J23/40 , B01J23/52 , B01J23/8906 , B01J23/8926 , B01J23/898 , B01J23/8993 , B01J35/06 , B21C37/042 , D01F8/18 , F01N3/2803 , H01M4/8605 , H01M4/8875 , H01M4/9041 , H01M4/92 , H01M2004/021
摘要： A method of fabricating composite filaments is provided. An initial composite filament including a core and a cladding (such as a Pt-group metal) is cut into smaller pieces (or is first mechanically reduced and then cut into smaller pieces). The smaller pieces of the filaments are inserted into a metal matrix, and the entire structure is then further reduced mechanically in a series of reduction steps. The process can be repeated until the desired cross sectional dimension of the filaments is achieved. The matrix can then be chemically removed to isolate the final composite filaments with the cladding thickness down to the nanometer range. The process allows the organization and integration of filaments of different sizes, compositions, and functionalities into arrays suitable for various applications. Materials and components made from such composite filaments and arrays of composite filaments are also disclosed.
-
公开(公告)号：US09982349B2
公开(公告)日：2018-05-29
申请号：US14708374
申请日：2015-05-11
发明人： Deepak Shukla , Kevin M. Donovan
CPC分类号： C23C18/30 , B01J23/50 , B01J35/0013 , B01J35/006 , C23C18/1608 , C23C18/1612 , C23C18/1651 , C23C18/36 , C23C18/38 , C23C18/405 , C23C18/44 , C25D5/02
摘要： A method for making electrically-conductive articles utilizes a non-aqueous metal catalytic composition that includes: (a) a silver complex comprising reducible silver ions, (b) a silver ion photoreducing composition, (c) a photocurable component, non-curable polymer, or combination of a photocurable component and a non-curable polymer, and (d) nanoparticles of a semi-conducting metal oxide in an amount of at least 0.1 weight %. This composition can be disposed on a substrate, uniformly or in a patternwise fashion. The composition can be dried and then exposed to suitable radiation to reduce the reducible silver ions to silver particles that can then be electrolessly plated with a metal to provide an electrically-conductive article.
-
公开(公告)号：US20180141025A1
公开(公告)日：2018-05-24
申请号：US15579419
申请日：2016-06-02
IPC分类号： B01J21/04 , B01J23/50 , B01J23/36 , B01J23/04 , B01J35/10 , B01J37/00 , C07D301/10 , B01J19/00
CPC分类号： B01J21/04 , B01J19/0013 , B01J23/04 , B01J23/36 , B01J23/50 , B01J35/04 , B01J35/1009 , B01J35/1038 , B01J35/1042 , B01J35/1047 , B01J35/108 , B01J37/0018 , B01J37/086 , B01J2219/00051 , C04B38/00 , C04B38/08 , C04B41/009 , C04B41/4535 , C04B41/5116 , C04B41/88 , C04B2111/0081 , C07D301/10 , C07D301/22 , C04B35/10 , C04B38/0096 , C04B41/455
摘要： A method is provided for improving the performance of a silver-based epoxidation catalyst comprising a carrier. The carrier includes at least 80 percent alpha alumina and has a pore volume from 0.3 mL/g to 1.2 mL/g, a surface area from 0.3 m2/g to 3.0 m2/g, and a pore architecture that provides at least one of a tortuosity of 7 or less, a constriction of 4 or less and a permeability of 30 mdarcys or greater. A catalytic amount of silver and a promoting amount of one or more promoters is disposed on and/or in said carrier. The method further includes the steps of initiating an epoxidation reaction by reacting a feed gas composition containing ethylene and oxygen present in a ratio of from about 3.5:1 to about 12:1, in the presence of the silver-based epoxidation catalyst at a temperature of about 200° C. to about 230° C., and subsequently increasing the temperature either stepwise or continuously.
-
47.发明申请公开(公告)号：US20180126016A1
公开(公告)日：2018-05-10
申请号：US15566938
申请日：2016-04-11
申请人： Skan AG
发明人： Scheuber Olivera , Volker Sigwarth
IPC分类号： A61L2/00 , A61L2/20 , B01D53/00 , B01D53/86 , B01J21/04 , B01J21/18 , B01J23/50 , B01J35/00 , B01J35/10 , B01J37/00
CPC分类号： A61L2/0094 , A61L2/208 , A61L2/22 , A61L2202/13 , B01D53/007 , B01D53/8671 , B01D2255/104 , B01D2255/904 , B01D2259/4533 , B01D2259/804 , B01J21/04 , B01J21/18 , B01J23/50 , B01J35/0013 , B01J35/004 , B01J35/1066 , B01J37/0009
摘要： The catalyst unit (1) for splitting a decontamination agent introduced into a containment for a decontamination process has at least one catalyst element (21). This catalyst element (21) first consists of a carrier material made of aluminum ceramics or activated carbon, and also of a catalytically active component in the form of nanoparticles, applied to the carrier material by means of chemical plating, and made of silver or silver oxide or of a silver and silver oxide mixture. The catalytically active component on the at least one catalyst element (21) is present in the range from 0.05 weight percent to 0.5 weight percent relative to the carrier material. The at least one catalyst element (21) has a catalytically effective surface in the range of up to 320 m2 per gram of used material, as a combination of carrier material plus applied catalytically active component. With the catalyst unit (1), an non-critical concentration of non-degraded decontamination agent of lower than 0.5 ppm, preferentially a maximum of 0.1 ppm can be achieved. The containment is configured in particular as an isolator, sluice or RABS (RestrictedAccess Barrier System), as well as being of a mobile and stationary type, such as means for transportation, and spaces for treatment, isolation and/or diagnosis of patients, as well as production spaces and laboratories.
-
公开(公告)号：US09962686B2
公开(公告)日：2018-05-08
申请号：US15428123
申请日：2017-02-08
发明人： Taekyung Yu , WooSik Kim , Aasim Shahzad , Minyoung Yi
IPC分类号： B01J27/10 , B01J35/00 , B01J23/50 , B01J27/08 , B01J31/26 , B01J31/06 , B01J35/08 , B01J37/04 , B01J37/03 , B01J37/02 , C02F1/32 , C02F1/74 , B01J31/02
CPC分类号： B01J27/10 , B01J23/50 , B01J27/08 , B01J31/0241 , B01J31/06 , B01J31/064 , B01J31/26 , B01J35/0006 , B01J35/0013 , B01J35/004 , B01J35/08 , B01J37/0221 , B01J37/031 , B01J37/04 , C02F1/325 , C02F1/725 , C02F1/74 , C02F2305/08 , C02F2305/10
摘要： The present invention relates to a hybrid nanostructured photocatalyst, comprising a first nanoparticle comprising silver halide (AgX); a second nanoparticle, which is formed on an outer surface of the first nanoparticle and comprises Ag; and a polymer formed on any one outer surface of the first nanoparticle and the second nanoparticle, and a preparation method thereof. Specifically, the present invention provides a hybrid nanostructured photocatalyst having a high photocatalytic activity in a visible light region and a preparation method thereof.
-
公开(公告)号：US09919295B2
公开(公告)日：2018-03-20
申请号：US15502036
申请日：2016-06-24
申请人： LG CHEM, LTD.
发明人： Byung Yul Choi , Hyun Jong Shin , Young Hyun Choe , Duk Ki Kim , Hyun Sub Lim , Hyo Sang You
IPC分类号： B01J27/199 , B01J27/14 , B01J27/057 , B01J23/755 , B01J23/75 , B01J23/745 , B01J23/72 , B01J23/50 , B01J23/46 , B01J23/34 , B01J23/30 , B01J23/28 , B01J23/26 , B01J23/22 , B01J23/20 , B01J23/18 , B01J23/14 , B01J23/10 , B01J23/04 , B01J23/02 , B01J21/10 , B01J21/06 , B01J21/02
CPC分类号： B01J27/199 , B01J21/02 , B01J21/06 , B01J21/063 , B01J21/066 , B01J21/10 , B01J23/02 , B01J23/04 , B01J23/10 , B01J23/14 , B01J23/18 , B01J23/20 , B01J23/22 , B01J23/26 , B01J23/28 , B01J23/30 , B01J23/34 , B01J23/464 , B01J23/50 , B01J23/6525 , B01J23/6527 , B01J23/6562 , B01J23/686 , B01J23/687 , B01J23/688 , B01J23/72 , B01J23/745 , B01J23/75 , B01J23/755 , B01J23/8878 , B01J23/8885 , B01J23/8898 , B01J23/8993 , B01J27/0576 , B01J27/14 , B01J35/08 , B01J37/0219 , B01J37/0221 , B01J37/0228 , B01J37/0232 , B01J2523/00 , C07C51/235 , B01J2523/17 , B01J2523/24 , B01J2523/55 , B01J2523/56 , B01J2523/68 , B01J2523/69 , B01J2523/72 , B01J2523/842 , C07C57/04
摘要： The present invention relates to a high-performance polyoxometalate catalyst and a method of preparing the same. More particularly, the present invention provides a high-performance polyoxometalate catalyst, the activity and selectivity of which may be improved by controlling the content of vanadium and the like and which has superior reproducibility and may unsaturated carboxylic acid from unsaturated aldehyde in a high yield for a long time, a method of preparing the same, and the like.
-
50.发明申请公开(公告)号：US20170369322A1
公开(公告)日：2017-12-28
申请号：US15631730
申请日：2017-06-23
IPC分类号： C01B32/215 , B01J21/18 , B01J23/44 , B01J23/50 , G03F7/20 , B01J37/34 , C08K3/04 , B01J35/00 , B01J23/52 , B01J37/16 , G03F7/004 , B82Y40/00 , B82Y30/00
摘要： Photoreduction of graphene oxide, by UV-generated ketyl radicals, to graphene. The photoreduction is versatile and can be carried out in solution, solid-state, and even in polymer composites. Reduction of graphene oxide can take place in various polymer matrixes. Methods for producing graphene-supported metal nanoparticles by photoreduction. Graphene oxide and a metal nanoparticle precursor are simultaneously reduced by the action of photogenerated ketyl radicals. Photoreduction is performed on polymer composite films in one embodiment.
-
-
-
-
-
-
-
-
-
搜索结果
1150 条记录 (耗时 0.029 秒)
