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公开(公告)号：US11622559B2
公开(公告)日：2023-04-11
申请号：US17329987
申请日：2021-05-25
发明人： Mohammad Azam Ansari
摘要： A method of preparing iron oxide nanoparticles using an herbal mixture comprising Capparis spinosa, Cichorium intybus, Solanum nigrum, Cassia occidentalis, Terminalia arjuna, Achillea millefolium, and Tamarix gallica. The method produces crystalline γ-Fe2O3 nanoparticles which are superparamagnetic. The iron oxide nanoparticles are used in a method of killing or inhibiting the growth of a bacteria and/or fungus, particularly in the form of a biofilm. The nanoparticles are also used in a method of treating colon cancer.
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公开(公告)号：US11587705B2
公开(公告)日：2023-02-21
申请号：US16645547
申请日：2018-09-12
申请人： Maxell, Ltd.
发明人： Masao Fujita , Toshio Hiroi
摘要： Provided is an electromagnetic-wave absorber composition and an electromagnetic-wave absorber that can favorably absorb a plurality of electromagnetic waves of different frequencies in a high frequency band in or above the millimeter-wave band. The electromagnetic-wave absorber composition includes a magnetic iron oxide that magnetically resonates at a high frequency in or above the millimeter-wave band and a resin binder. The electromagnetic-wave absorber composition has two or more extrema separated from each other on a differential curve obtained by differentiating a magnetic property hysteresis loop at an applied magnetic field intensity of from 16 kOe to −16 kOe. The electromagnetic-wave absorber includes an electromagnetic-wave absorbing layer formed of the above-described electromagnetic-wave absorber composition.
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公开(公告)号：US20220341666A1
公开(公告)日：2022-10-27
申请号：US17763450
申请日：2020-09-11
IPC分类号： F27B1/00 , C01B33/18 , C01F7/021 , C01F5/02 , C01G49/06 , F23D14/02 , F23D14/70 , F27B1/06 , F27B1/08
摘要： One object of the present invention is to provide a burner for producing inorganic spheroidized particles which can efficiently melt and spheroidize even organic powder with a large particle size distribution. The present invention provides a burner for producing inorganic spheroidized particles, including; a raw material powder supply path configured to supply inorganic powder as raw material powder; a first fuel gas supply path (3A) configured to supply a first fuel gas; and a first combustion-supporting gas supply path (4A) configured to supply a first combustion-supporting gas; wherein the raw material powder supply path includes: a first supply path (2A) configured to extend in an axial direction of the burner (1); a first collision wall (2D) configured to be located at the top of the first supply path (2A); a plurality of second supply paths (2B) configured to be branched from the top of the first supply path (2A), and extend radially from the center of the burner (1); one or more dispersion chambers (2C) configured to be located at the top of the second supply path (2B), and have a space in which the cross-sectional area is larger than the cross-sectional area in the second supply path (2B); and one or more raw material ejection holes (2a) configured to communicate with the dispersion chamber (2C).
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公开(公告)号：US11348711B2
公开(公告)日：2022-05-31
申请号：US16132662
申请日：2018-09-17
申请人： FUJIFILM Corporation
发明人： Kenji Naoi , Masashi Shirata , Takashi Fujimoto
摘要： The invention provides a core-shell particle which can provide, by being calcinated, epsilon type iron oxide-based compound particles that have a small coefficient of variation of primary particle diameter and show excellent SNR and running durability when employed in a magnetic recording medium as well as applications thereof. The core-shell particle includes: a core including at least one iron oxide selected from Fe2O3 or Fe3O4, or iron oxyhydroxide; and a shell that coats the core, the shell including a polycondensate of a metal alkoxide and a metal element other than iron, as well as applications thereof.
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公开(公告)号：US20220111360A1
公开(公告)日：2022-04-14
申请号：US17264296
申请日：2020-07-10
申请人： FU ZHOU UNIVERSITY
发明人： Qingyan CUI , Xiubin HU , Xiaojun BAO , Yuanyuan YUE , Tinhai WANG , Haibo ZHU , Zhengshuai BAI
IPC分类号： B01J23/745 , B01J37/00 , B01J37/04 , B01J37/06 , B01J37/08 , B01J37/10 , B01J35/10 , C10G11/04 , B01J37/03 , B01J37/02 , C01G49/06
摘要： The present invention belongs to the technical field of petroleum processing, and specifically relates to a method for preparing a catalyst for inferior residual oil suspended bed hydrocracking. Using sol-gel method and hydrothermal method, a mesoporous γ-Fe2O3 catalyst suitable for inferior residual oil suspended bed hydrocracking with a high specific surface area was prepared, based on FeCl3.6H2O, Fe2(SO4)3.xH2O as inorganic iron source, and cheap sawdust powder as template. The present invention proposes to prepare a γ-Fe2O3 material with a mesoporous structure, a high specific surface area and a high pore volume using cheap raw materials and a simple and green synthesis process. The material as a catalyst has a good application effect in the heavy oil suspended bed hydrocracking reaction with a small amount, therefore having good commercial and industrial application value.
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公开(公告)号：US20220081319A1
公开(公告)日：2022-03-17
申请号：US17419346
申请日：2020-02-04
发明人： Shin-ichi OHKOSHI , Asuka NAMAI , Marie YOSHIKIYO , Daisuke KODAMA , Shiho OBATA , Masahiro GOTOH
摘要： An iron-based oxide magnetic powder has good thermal stability and a small change in coercive force even in a high-temperature environment and is one composed of particles of ε-iron oxide in which Fe sites are partially substituted by another metal element. A production method for such an iron-based oxide magnetic powder includes allowing a phosphorus-containing ion to coexist when a precipitate of an iron hydroxide containing a substituent metal element produced by neutralizing an acidic aqueous solution containing a trivalent iron ion and an ion of a metal that partially substitutes Fe sites is coated with silicon oxide using a silane compound.
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公开(公告)号：US11241683B2
公开(公告)日：2022-02-08
申请号：US15723685
申请日：2017-10-03
发明人： Luis Eduardo Terra De Almeida , Ludmila De Paula Cabral Silva , Ana Carla da Silveira Lomba Sant'ana Coutinho , Fabio Barboza Passos , Vivian Passos De Souza , Maira Andrade Rodrigues , Amanda De Almeida Dumani Dos Santos
摘要： The present invention relates to catalysts of iron and chromium with a platinum promoter for use in water-gas shift reactions, both at low temperatures (LTS) and at high temperatures (HTS). Their characteristics of higher activity due to the addition of Pt compared to the conventional catalysts make them superior to the commercial catalysts in the same operating conditions. Because precursors of the active phase (Fe3O4) are obtained in greater quantity per unit area, it was possible to prepare catalysts that are more promising with a smaller surface area.
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公开(公告)号：US20210300779A1
公开(公告)日：2021-09-30
申请号：US16979241
申请日：2019-03-26
发明人： Shin-ichi OHKOSHI , Asuka NAMAI , Kenji SAKANE , Tetsuya KAWAHITO
摘要： [Problem] To provide a method for producing iron based oxide magnetic powder that has a narrow particle size distribution and a small content of fine particles that do not contribute to the magnetic recording characteristics, and consequently has a narrow coercive force distribution and is suitable for the enhancement of the recording density of the magnetic recording medium. [Solution] ε-Type iron based oxide magnetic powder is obtained by a wet method, then a tetraalkylammonium salt as a surface modifier is added to a slurry containing the magnetic powder to make a concentration of 0.009 mol/kg or more and 1.0 mol/kg or less, and simultaneously to make pH of 11 or more and 14 or less, and the slurry is subjected to a dispersion treatment and then classified, so as to provide iron based oxide magnetic powder having a narrow particle size distribution and a narrow coercive force distribution.
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公开(公告)号：US11104807B2
公开(公告)日：2021-08-31
申请号：US16082651
申请日：2017-03-08
发明人： Waldemar Czaplik , Udo Holtmann
摘要： The present invention relates to an improved process for producing iron oxide red pigments by the Penniman process using nitrate (also referred to as nitrate process or direct red process) and apparatuses for carrying out the process.
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公开(公告)号：US20210252525A1
公开(公告)日：2021-08-19
申请号：US16973010
申请日：2019-06-05
摘要： This invention relates to use of a water-miscible polyhydric alcohol having two or three hydroxyl groups for improving the collector performance of a collector composition for the reverse iron ore flotation comprising at least one alkyl ether amine of formula (I) and/or alkyl ether diamine of formula (II) R1—(O-A)-NH2 (I) R2—(O-A)-NH—R3—NH2 (II) wherein R1 is a hydrocarbyl group with 6 to 24 carbon atoms, R2 is a hydrocarbyl group with 6 to 24 carbon atoms, R3 is an aliphatic hydrocarbyl group with 2 to 4 carbon atoms A is an alkylene group with 2 to 6 carbon atoms.
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