公开(公告)号：US11608268B2

公开(公告)日：2023-03-21

申请号：US16763205

申请日：2018-11-08

申请人： JIANGXI YUEAN ADVANCED MATERIALS CO., LTD.

发明人： Shangkui Li ,  Bing Wang ,  Bo Li ,  Xianxin Li ,  Haiping Zou ,  Minfeng Zhu

IPC分类号： C01B32/162 ,  C01B32/164 ,  B01J8/18 ,  B01J8/42 ,  B01J23/755

摘要： A method and a device for preparing a carbon nanotube and a prepared carbon nanotube. The method includes: adding iron pentcarbonyl and nickel tetracarbonyl into a multi-stage series fluidized bed and performing decomposition to obtain a catalyst, and discharging the carbon monoxide generated; adding a carbon source and injecting an inert gas into the series fluidized bed for reaction under heating at 600-800° C. for 40-90 min, the ratio of the mass of carbon in the carbon source to the mass of the catalyst being 5-7:3-5. Further provided are a device for preparing a carbon nanotube according to the above method and a carbon nanotube prepared by the above method.

公开(公告)号：US11358867B2

公开(公告)日：2022-06-14

申请号：US16330650

申请日：2017-04-25

申请人： NAWATECHNOLOGIES

发明人： Jérémie Descarpentries

IPC分类号： C01B32/164 ,  B01J19/18 ,  B01J8/00 ,  B01J19/14

摘要： A facility for producing a composite material that includes carbon nanotubes. The facility includes a reaction chamber with an injection device for injecting an active gas mixture (for the growth of the carbon nanotubes) into the interior volume thereof. A transport device is to transport a substrate into the reaction chamber to form the composite material. The injection device may transport the active gas mixture in a first direction into the interior volume. A circulation device is to circulate the active gas mixture, and may transport the active gas mixture into the interior volume in a second direction that is different from the first direction. The circulation device may adopt a first configuration of injection of the active gas mixture into the interior volume of the chamber, and a second configuration of extraction of the active gas mixture from the interior volume.

公开(公告)号：US20190336948A1

公开(公告)日：2019-11-07

申请号：US16292968

申请日：2019-03-05

申请人： Massachusetts Institute of Technology

发明人： Anastasios John Hart ,  Brian L. Wardle ,  Enrique J. Garcia ,  Alexander H. Slocum

IPC分类号： B01J23/745 ,  C01B32/18 ,  B82B1/00 ,  C01B32/162 ,  C01B32/16 ,  C01B32/164 ,  B82Y30/00 ,  B82Y40/00 ,  D01F9/127 ,  D01F9/133 ,  D06M11/74 ,  B01J21/04 ,  D06M23/08

摘要： The present invention provides methods for uniform growth of nanostructures such as nanotubes (e.g., carbon nanotubes) on the surface of a substrate, wherein the long axes of the nanostructures may be substantially aligned. The nanostructures may be further processed for use in various applications, such as composite materials. For example, a set of aligned nanostructures may be formed and transferred, either in bulk or to another surface, to another material to enhance the properties of the material. In some cases, the nanostructures may enhance the mechanical properties of a material, for example, providing mechanical reinforcement at an interface between two materials or plies. In some cases, the nanostructures may enhance thermal and/or electronic properties of a material. The present invention also provides systems and methods for growth of nanostructures, including batch processes and continuous processes.

公开(公告)号：US10439229B2

公开(公告)日：2019-10-08

申请号：US15459202

申请日：2017-03-15

申请人： City University of Hong Kong

发明人： Jian Lu ,  Yang Yang Li ,  Shanshan Zeng

IPC分类号： H01M4/90 ,  H01M4/96 ,  C01B32/158 ,  B01J35/06 ,  C01B32/16 ,  C01B32/164 ,  C01B32/168 ,  B01J21/18 ,  B01J35/00 ,  H01M12/06

摘要： A method of making carbon nanotubes doped with iron, nitrogen and sulfur for an oxygen reduction reaction catalyst includes the steps of mixing an iron containing oxidizing agent with a sulfur-containing dye to form a fibrous fluctuate of reactive templates and using these for in-situ polymerization of an azo compound to form polymer-dye nanotubes, adding an alkali to precipitate magnetite, and subjecting the nanotubes to pyrolysis, acid leaching, and heat treatment.

公开(公告)号：US10195668B2

公开(公告)日：2019-02-05

申请号：US14794931

申请日：2015-07-09

申请人： Honda Motor Co., Ltd.

发明人： Avetik Harutyunyan ,  Rahul Rao ,  Nam Hawn Chou

IPC分类号： C01B32/162 ,  B22F9/24 ,  C01G15/00 ,  B01J23/08 ,  B01J23/46 ,  B01J35/00 ,  B01J37/00 ,  B01J37/18 ,  B22F1/00 ,  C01B32/164 ,  B82Y30/00 ,  B82Y40/00

摘要： The present disclosure is directed to methods for producing a single-walled carbon nanotube in a chemical vapor deposition (CVD) reactor. The methods comprise contacting liquid catalyst droplets and a carbon source in the reactor, and forming a single walled carbon nanotube at the surface of the liquid catalyst droplets.

公开(公告)号：US10179738B2

公开(公告)日：2019-01-15

申请号：US16109962

申请日：2018-08-23

申请人： KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

发明人： Zuhair Omar Malaibari ,  Muataz Ali Atieh ,  Fahad Ali Rabbani

IPC分类号： C01B32/16 ,  C01B32/162 ,  C01B32/164 ,  C23C16/44 ,  C23C16/452 ,  C23C16/26

摘要： A method for preparing multi-wall carbon nanotubes comprising atomizing a precursor solution comprising an aromatic hydrocarbon and a carrier gas. The mixture is then injected through an ultrasonic atomization system to form atomized precursor droplets. Then by injecting the atomized precursor droplets from the top of a vertical chemical vapor deposition reactor, the droplets can then react with a reaction gas in the reactor vessel to form a film that adsorbs to a growth surface in the reactor vessel. Layer by layer multi-wall carbon nanotubes are formed. This method is repeated to form layers of the multi-wall carbon nanotubes. The nanotubes formed have an outer diameter of 10 nm-51 nm and a length to diameter aspect ratio of 7200-13200.

公开(公告)号：US20190002283A1

公开(公告)日：2019-01-03

申请号：US15865459

申请日：2018-01-09

申请人： Board of Regents, The University of Texas System

发明人： Mei Zhang ,  Shaoli Fang ,  Ray H. Baughman ,  Anvar A. Zakhidov ,  Kenneth Ross Atkinson ,  Ali E. Aliev ,  Sergey Li ,  Chris Williams

IPC分类号： C01B32/158 ,  H01L51/44 ,  C01B32/164 ,  C01B32/154 ,  C01B32/36 ,  C01B32/15 ,  C01B32/17 ,  C01B32/168 ,  C01B32/16 ,  D02G3/28 ,  D01F9/127 ,  D02G3/44 ,  B32B18/00 ,  B29C47/00 ,  D01F9/12 ,  B32B5/12 ,  B32B5/02 ,  C01B32/18

摘要： A nanofiber forest on a substrate can be patterned to produce a patterned assembly of nanofibers that can be drawn to form nanofiber sheets, ribbons, or yarns.

公开(公告)号：US11617997B2

公开(公告)日：2023-04-04

申请号：US17108616

申请日：2020-12-01

申请人： IHI CORPORATION

发明人： Hiroyuki Kimura ,  Tomoya Muramoto ,  Satoshi Seo

IPC分类号： B01J10/00 ,  C01B32/164 ,  F24S20/30 ,  C01B3/38 ,  B82Y30/00 ,  B82Y40/00

摘要： A hydrogen production apparatus includes: a first furnace configured to heat a mixed gas of a raw material gas, which contains at least methane, and hydrogen to 1,000° C. or more and 2,000° C. or less; and a second furnace configured to accommodate a catalyst for accelerating a reaction of a first gas generated in the first furnace to a nanocarbon material, and to maintain the first gas at 500° C. or more and 1,200° C. or less.

公开(公告)号：US20210395090A1

公开(公告)日：2021-12-23

申请号：US16605834

申请日：2018-03-27

申请人： Shandong Dazhan Nano Materials Co., Ltd.

发明人： Yan LI ,  Lei GENG ,  Zhenhua LV ,  Longli LI ,  Zhongcun BAO

IPC分类号： C01B32/164 ,  B01J8/40 ,  B01J8/18 ,  B01J8/00 ,  B01J23/745 ,  B01J23/755 ,  B01J23/75

摘要： An apparatus for continuous preparation of carbon nanotubes, based on a fluidized bed reactor. The fluidized bed reactor comprises an annular varying diameter zone, a raw material gas inlet, a catalyst feeding port, a protective gas inlet, and a pulse gas controller. The annular varying diameter zone is located at a zone from a ¼ position starting from the bottom to the top. The pulse gas controller is disposed at the arc-shaped top portion of the annular varying diameter zone. The catalyst feeding port is located at the top of the fluidized bed reactor. The raw material gas inlet and the protective gas inlet are located at the bottom of the fluidized bed reactor. The device is also provided with a product outlet and a tail gas outlet. The device has a simple structure and low cost, is easy to operate, has a high raw material utilization rate, can effectively control the problem of carbon deposition on the inner wall of a primary reactor, can manufacture high-purity carbon nanotubes, and is suitable for large-scale industrial production.

公开(公告)号：US11117803B2

公开(公告)日：2021-09-14

申请号：US16490772

申请日：2018-03-02

申请人： KOREA KUMHO PETROCHEMICAL CO., LTD.

发明人： Sang Hyo Ryu ,  Hyun Kyung Sung ,  Chung Heon Jeong ,  Dong Hwan Kim

IPC分类号： C01B32/164 ,  C01B32/162 ,  B01J8/24 ,  B01J35/00 ,  B82Y30/00 ,  B82Y40/00

摘要： A method for manufacturing multi-wall carbon nanotubes, includes the steps of: (a) dissolving a metal precursor in a solvent to prepare a precursor solution; (b) perform thermal decomposition while spraying the precursor solution into a reactor, thereby forming a catalyst powder; and (c) introducing the catalyst powder into a fluidized-bed reactor heated to 600-900° C. and spraying a carbon-based gas and a carrier gas to synthesize multi-wall carbon nanotubes from the catalyst powder, wherein steps (a) to (c) are performed in a continuous type and wherein the catalyst powder contains metal components according to equation 1 below. Ma:Mb=x:y, wherein Ma represents at least two metals selected from Fe, Ni, Co, Mn, Cr, Mo, V, W, Sn, and Cu; Mb represents at least one metal selected from Mg, Al, Si, and Zr; x and y each represent the molar ratio of Ma and Mb; and x+y=10, 2.0≤x≤7.5, and 2.5≤y≤8.0.