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公开(公告)号：KR100375000B1
公开(公告)日：2003-03-06
申请号：KR1020010008521
申请日：2001-02-20
Applicant: 한국과학기술연구원
IPC: B22F9/24
Abstract: PURPOSE: A method for manufacturing fine powder of core shell structure is provided to manufacture spherical nano powder of core shell structure that a functional metal element is located at the center thereof by virtue of a micro emulsion method using reverse micelle. CONSTITUTION: The method for manufacturing fine powder of core shell structure is comprised of steps; preparing a transition metal solution; attaining a transition metal organic solution by mixing the transition metal solution with surfactant and a certain organic solvent; adding a deoxidation agent to the organic solution; and causing a hydrosis reaction and a condensation reaction by adding TEOS(tetraethoxysilane) to the organic solution.
Abstract translation: 目的：提供一种制造核壳结构细粉末的方法，以通过使用反胶束的微乳液法制造功能性金属元素位于其中心的核壳结构球形纳米粉末。 构成：核壳结构细粉的制造方法由步骤组成， 制备过渡金属溶液; 通过将过渡金属溶液与表面活性剂和某种有机溶剂混合获得过渡金属有机溶液; 向有机溶液中加入脱氧剂; 并通过向有机溶液中加入TEOS（四乙氧基硅烷）引起水合反应和缩合反应。
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公开(公告)号：KR1020020082587A
公开(公告)日：2002-10-31
申请号：KR1020010022113
申请日：2001-04-24
Applicant: 한국과학기술연구원
IPC: B22F9/24
Abstract: PURPOSE: A method of synthesizing platelet-type asymmetric cadmium sulfide (CdS) fine particles by self assembly process is provided. CONSTITUTION: The synthesis method of platelet-type asymmetric cadmium sulfide comprises the steps of mixing an aqueous solution of cadmium compound with an aqueous solution of sulfur compound wherein the cadmium compound is selected from the group consisting of (Cd(NO3)2·4H2O), (Na2S·9H2O), cadmium acetate hydrate (CH3CO2)2Cd·xH2O, cadmium acetylacetonate hydrate (£(CH3)2(CO)2CH|2Cd·xH2O), cadmium carbonate (CdCO3), cadmium chloride hydrate (CdCl2·xH2O), cadmium sulfate hydrate (CdSO4·xH2O), and sulfur compound is selected from Na2S·9H2O and CaS and Li2S; adding one or more organic solvents selected from octylamine, amylamine, decylamine, undecylamine and dodecylamine to above aqueous solution; recovering obtained platelet-type asymmetric cadmium sulfide (CdS) fine particles by extraction and centrifugation; and washing the recovered platelet-type asymmetric cadmium sulfide (CdS) fine particles with solvents such as ethanol, acetone, isopropanol and methanol.
Abstract translation: 目的：提供一种通过自组装方法合成血小板型不对称硫化镉（CdS）微粒的方法。 构成：血小板型不对称硫化镉的合成方法包括以下步骤：将镉化合物的水溶液与硫化合物的水溶液混合，其中镉化合物选自（Cd（NO 3）2·4H 2 O） ，（Na2S·9H2O），乙酸镉水合物（CH3CO2）2Cd·xH2O，乙酰丙酮酸镉水合物（£（CH3）2（CO）2CH | 2Cd·xH2O），碳酸镉（CdCO3），氯化镉水合物（CdCl2·xH2O） ，硫酸镉水合物（CdSO4·xH2O）和硫化合物选自Na2S·9H2O和CaS和Li2S; 向上述水溶液中加入一种或多种选自辛胺，戊胺，癸胺，十一胺和十二烷胺的有机溶剂; 通过提取和离心回收获得的血小板型不对称硫化镉（CdS）微粒; 并用溶剂如乙醇，丙酮，异丙醇和甲醇洗涤回收的血小板型不对称硫化镉（CdS）微粒。
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公开(公告)号：KR1020020068223A
公开(公告)日：2002-08-27
申请号：KR1020010008521
申请日：2001-02-20
Applicant: 한국과학기술연구원
IPC: B22F9/24
Abstract: PURPOSE: A method for manufacturing fine powder of core shell structure is provided to manufacture spherical nano powder of core shell structure that a functional metal element is located at the center thereof by virtue of a micro emulsion method using reverse micelle. CONSTITUTION: The method for manufacturing fine powder of core shell structure is comprised of steps; preparing a transition metal solution; attaining a transition metal organic solution by mixing the transition metal solution with surfactant and a certain organic solvent; adding a deoxidation agent to the organic solution; and causing a hydrosis reaction and a condensation reaction by adding TEOS(tetraethoxysilane) to the organic solution.
Abstract translation: 目的：提供一种制造核心壳结构细粉的方法，通过使用反胶束的微乳液法制造核心壳结构的球形纳米粉末，功能性金属元素位于其中心。 构成：核壳结构细粉的制造方法包括： 制备过渡金属溶液; 通过将过渡金属溶液与表面活性剂和某些有机溶剂混合来获得过渡金属有机溶液; 向该有机溶液中加入脱氧剂; 并通过向有机溶液中加入TEOS（四乙氧基硅烷）引起水解反应和缩合反应。
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公开(公告)号：KR1020000026019A
公开(公告)日：2000-05-06
申请号：KR1019980043371
申请日：1998-10-16
Applicant: 한국과학기술연구원
IPC: C01G49/00
CPC classification number: C01G49/08 , C01P2002/72 , C01P2004/04 , C01P2004/32 , C01P2004/41 , C01P2004/61 , C01P2004/62
Abstract: PURPOSE: Provided are methods for synthesizing iron oxide powder in which the shapes and sizes of particles can be easily regulated. CONSTITUTION: Dried α-FeOOH precursor with final concentration of 0.1-0.5 mol per liter is added to reactor containing glycol solvent such as ethylene glycol, propylene glycol, or mixture of them, which regulators for shape and size of particles, while H2O, itaconic acid, or HNO3 are used as regulators; the mixture is blended by ultrasonic disperser at 150-300°C and with pressure of 3-30 kg per centimeter square for 1-48 hours; then, recrystallized particles are gained by centrifugation. The shape and size of particles are controlled by what kind and what concentration of a regulator is used. Produced iron oxide particles have spherical, octahedral, tetradecahedral, or intermediary polygonal shape and 0.05-5.0 micrometer particle size.
Abstract translation: 目的：提供合成氧化铁粉末的方法，其中可以容易地调节颗粒的形状和尺寸。 构成：将最终浓度为0.1-0.5mol / l的干燥的α-FeOOH前体加入到含有二醇溶剂如乙二醇，丙二醇或它们的混合物的反应器中，这些调节剂用于形成和尺寸的颗粒，而H 2 O，衣康酸 酸或HNO 3用作调节剂; 该混合物通过超声波分散机在150-300℃和3-30kg / cm 2的压力下共混1-48小时; 然后通过离心获得重结晶的颗粒。 颗粒的形状和尺寸由使用什么样的浓度的调节剂控制。 产生的氧化铁颗粒具有球形，八面体，十四面体或中间多边形，粒径为0.05-5.0微米。
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Patent Agency Ranking
公开(公告)号：KR1020030024381A
公开(公告)日：2003-03-26
申请号：KR1020010057507
申请日：2001-09-18
Applicant: 한국과학기술연구원
IPC: B22F1/00
Abstract: PURPOSE: A synthesizing method of fine powder of copper using organic solvent is provided to directly prepare copper powder without reduction treatment by inducing reaction of organic solvent at proper temperature and pressure. CONSTITUTION: The synthesizing method of fine powder of copper using organic solvent comprises the processes of preparing copper hydroxide sediment by reacting a copper precursor aqueous solution with a neutralizer selected from calcium hydroxide (KOH), sodium hydroxide (NaOH) and ammonium hydroxide (NH4OH); and reacting the mixed solution at a temperature of 200 to 300 deg.C for 0.5 to 20 hours after dissolving the sediment into an organic solvent, wherein the copper precursor is at least one or more precursors selected from copper nitrate hydride (Cu(NO3)2·xH2O), copper chloride dehydride (CuCl2·2H2O), copper sulfide pentahydride (CuSO4·5H2O) and copper sulfide hydride (CuSO4·xH2O), wherein the organic solvent is at least one or more solvents selected from ethylene glycol, di(ethylene glycol), polyethylene glycol and butanediol, and wherein centrifuge method is used to recover the obtained copper fine powder.
Abstract translation: 目的：提供使用有机溶剂的铜精细合成方法，通过在适当的温度和压力下引发有机溶剂的反应直接制备铜粉而不进行还原处理。 构成：使用有机溶剂的铜精细合成方法包括通过使铜前体水溶液与选自氢氧化钙（KOH），氢氧化钠（NaOH）和氢氧化铵（NH 4 OH）的中和剂反应制备氢氧化铜沉淀物的方法， ; 在将沉淀物溶解在有机溶剂中后，在200〜300℃的温度下使混合溶液反应0.5〜20小时，其中铜前体是至少一种或多种选自硝酸铜（Cu（NO 3） 2·xH2O），氯化铜酐（CuCl2·2H2O），硫化铜五氢化物（CuSO4·5H2O）和硫化铜氢化物（CuSO4·xH2O），其中有机溶剂为选自乙二醇，二 乙二醇），聚乙二醇和丁二醇，其中使用离心法回收得到的铜精细粉末。
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公开(公告)号：KR1020020094069A
公开(公告)日：2002-12-18
申请号：KR1020010031770
申请日：2001-06-07
Applicant: 한국과학기술연구원
IPC: B22F9/16
Abstract: PURPOSE: A method for manufacturing fine nickel powder with a particle size distribution of 100 to 1000 nm using liquid reaction method is provided. CONSTITUTION: The method includes the steps of reacting a neutralizing agent with one metal precursor selected from (Ni(NO3)2·6H2O), (NiCl2x·H2O) and (NiSO4·6H2O) in aqueous solution to obtain precipitates; solving the precipitates in an organic solvent; treating above slurry at 200 to 300 deg.C under a pressure of 0.1 to 4 MPa to obtain fine metal powder; and extracting the organic solvent from the obtained fine metal powder by using solvents such as ethanol, acetone, isopropyl alcohol a methanol. The method is characterized in that the neutralizing agent is selected from KOH, NaOH and NH4OH; the organic solvent is selected from ethylene glycol, polyethylene glycol and butanediol.
Abstract translation: 目的：提供使用液体反应法制造粒度分布为100〜1000nm的细镍粉的方法。 方法：该方法包括将中和剂与选自（Ni（NO 3）2·6H 2 O），（NiCl 2·H 2 O）和（NiSO 4·6H 2 O）的金属前体在水溶液中反应以获得沉淀物的步骤; 在有机溶剂中溶解沉淀物; 在0.1〜4MPa的压力下，在200〜300℃下处理上述浆料，得到细小的金属粉末; 用乙醇，丙酮，异丙醇，甲醇等溶剂从得到的金属粉末中提取有机溶剂。 该方法的特征在于中和剂选自KOH，NaOH和NH 4 OH; 有机溶剂选自乙二醇，聚乙二醇和丁二醇。
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公开(公告)号：KR1020020073849A
公开(公告)日：2002-09-28
申请号：KR1020010013733
申请日：2001-03-16
Applicant: 한국과학기술연구원
CPC classification number: C01B33/18 , C01P2004/32 , C01P2004/64
Abstract: PURPOSE: A method for synthesizing nanosized SiO2 particles with a particle size distribution of 10 to 75 nm by reverse micelle and sol-gel process is provided. CONSTITUTION: The method for synthesizing nanosized SiO2 particles includes the steps of adding (a) one or more surfactants selected from polyoxyethlene nonylphenyl ether and sodium bis(2-ethylhexyl) sulfonate and (b) one or more organic solvents selected from cyclohexane and isooctane into water to prepare an organic solution; reacting the organic solution with tetraethoxysilane (TEOS) in the presence of NH4OH for the promotion of hydrolysis and condensation so that nanosized SiO2 particles are obtained; and rinsing the nanosized SiO2 particles with at least one solvents selected from the group consisting of ethanol, acetone, isopropanol, methanol, toluene and methoxy ethanol. In the above reaction, mole ratio of water/surfactant is 2 to 50, water/TEOS is 5 to 400 and NH4OH/TEOS is 0.1 to 5.
Abstract translation: 目的：提供一种通过反胶束和溶胶 - 凝胶法合成粒径分布为10〜75nm的纳米SiO2颗粒的方法。 构成：合成纳米SiO 2颗粒的方法包括以下步骤：（a）一种或多种选自聚氧乙烯壬基苯基醚和双（2-乙基己基）磺酸钠的表面活性剂和（b）一种或多种选自环己烷和异辛烷的有机溶剂， 水制备有机溶液; 在NH 4 OH存在下使有机溶液与四乙氧基硅烷（TEOS）反应，以促进水解和缩合，从而获得纳米SiO 2颗粒; 并用至少一种选自乙醇，丙酮，异丙醇，甲醇，甲苯和甲氧基乙醇的溶剂冲洗纳米尺度的二氧化硅颗粒。 在上述反应中，水/表面活性剂的摩尔比为2〜50，水/ TEOS为5〜400，NH 4 OH / TEOS为0.1〜5。
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公开(公告)号：KR1020040093911A
公开(公告)日：2004-11-09
申请号：KR1020030027780
申请日：2003-04-30
Applicant: 한국과학기술연구원
CPC classification number: B22F9/24 , B22F1/0044 , B82Y40/00
Abstract: PURPOSE: Provided is a method for preparing silver nano-sized powder having controlled particle size distribution of up to 100 nm by using micro-emulsion process. CONSTITUTION: The method for preparing Ag nano-sized powders comprises the steps of: mixing an aqueous solution of silver with a surfactant in an organic solvent to obtain a reverse micelle micro-emulsion; reducing silver by adding a reducing agent to the emulsion and agglutinating to obtain silver powder; and washing the powder to isolate from the organic solvent. Particularly, the organic solvent is at least one selected from cyclohexane and isooctane, and the surfactant is at least one selected from polyoxyethylene nonylphenyl ether and sodium bis(2-ethylhexyl) sulfonate. Further, the reducing agent may be 0.1-2 wt% of N2H4.xH2O.
Abstract translation: 目的：提供一种通过使用微乳液法制备具有高达100nm的可控粒度分布的银纳米尺寸粉末的方法。 构成：制备Ag纳米尺寸粉末的方法包括以下步骤：将银水溶液与表面活性剂在有机溶剂中混合，得到反胶束微乳液; 通过向乳液中加入还原剂并凝集得到银粉来还原银; 并洗涤粉末与有机溶剂分离。 特别地，有机溶剂是选自环己烷和异辛烷中的至少一种，表面活性剂是选自聚氧乙烯壬基苯基醚和双（2-乙基己基）磺酸钠中的至少一种。 此外，还原剂可以为0.1〜2重量％的N 2 H 4·xH 2 O.
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公开(公告)号：KR1020040044024A
公开(公告)日：2004-05-27
申请号：KR1020020072520
申请日：2002-11-20
Applicant: 한국과학기술연구원
CPC classification number: C01G25/02 , C01F17/0043 , C01P2004/64
Abstract: PURPOSE: Provided is a preparation method of nanosize Y2O3-added ZrO2 powder with 5-50nm size and spherical shape by coprecipitation and mechanical mixing. CONSTITUTION: The Y2O3-added ZrO2 powder is prepared by the following steps of: preparing an aqueous precursor solution with Y and Zr, wherein the Zr-source is zirconyl chloride octahydrate(ZrOCl3·8H2O) or zirconyl nitrate hydrate(ZrO(NO3)2·xH2O), and the Y-source is yttrium nitrate hexahydrate(Y(NO3)3·6H2O) or yttrium chloride hexahydrate(YCl3·6H2O); adding an neutralizer such as NH4OH, NaOH or KOH until the pH of the solution is 7 or more to form precipitates; ball milling or attrition milling the solution containing precipitates; washing the solution with water, filtering and drying at 100deg.C; and thermal-treating precipitates at 400-1000deg.C for 0.1-50hrs.
Abstract translation: 目的：提供一种通过共沉淀和机械混合制备具有5-50nm尺寸和球形的纳米尺寸的Y 2 O 3添加的ZrO 2粉末的制备方法。 构成：通过以下步骤制备添加Y2O3的ZrO 2粉末：用Y和Zr制备前体水溶液，其中Zr源是氧化锆八水合物（ZrOCl 3·8H 2 O）或硝酸氧锆水合物（ZrO（NO 3）2） ·xH2O），Y-源是硝酸钇六水合物（Y（NO 3）3·6H 2 O）或氯化钇六水合物（YCl 3·6H 2 O）; 加入中和剂如NH 4 OH，NaOH或KOH直至溶液的pH为7以上以形成沉淀物; 球磨或磨碎含有沉淀物的溶液; 用水洗涤溶液，过滤并干燥至100℃; 并在400-1000℃热处理沉淀0.1-50小时。
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