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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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公开(公告)号：KR100405970B1
公开(公告)日：2003-11-14
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细粉的合成方法，通过在适当的温度和压力下引发有机溶剂的反应而直接制备铜粉而不进行还原处理。 构成：使用有机溶剂的铜细粉的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）的中和剂反应来制备氢氧化铜沉积物的方法， ; 并且在将沉淀物溶解于有机溶剂中之后，将混合溶液在200至300℃的温度下反应0.5至20小时，其中所述铜前体是至少一种或多种选自硝酸铜（Cu（NO 3） （CuCl 2·2H 2 O），硫化铜五水合物（CuSO 4·5H 2 O）和硫化氢铜（CuSO 4·xH 2 O），其中有机溶剂为至少一种或多种 选自乙二醇，二（乙二醇），聚乙二醇和丁二醇中的溶剂，并且其中使用离心法来回收所获得的铜细粉。
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公开(公告)号：KR100399382B1
公开(公告)日：2003-09-26
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。 组成：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＆amp; （CH3）2（CO）2CH | 2Cd→xH2O），碳酸镉（CdCO3），碳酸镉（CdCO3），乙酸镉水合物（CH3CO2）2Cd， ，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; 将选自辛胺，戊胺，癸胺，十一烷胺和十二烷胺的一种或多种有机溶剂加入到上述水溶液中; 通过提取和离心回收得到的血小板型不对称硫化镉（CdS）微粒; 用乙醇，丙酮，异丙醇，甲醇等溶剂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：KR100333497B1
公开(公告)日：2002-04-25
申请号：KR1019990043290
申请日：1999-10-07
Applicant: 한국과학기술연구원
IPC: C04B35/563 , C01F5/02 , C01B31/36
Abstract: 본 발명은 자전 고온 반응 합성법에 의해 B
2 O
3 , C, Mg의 혼합물로 부터 B
4 C 분말을 제조할 때 동반되는 과량의 MgO을 유용한 Mg화합물로 회수하는 방법에 관한 것으로, B
4 C분말을 B
2 O
3 (또는 H
3 BO
3 )와 탄소 분말에 Mg분말을 혼합하여 SHS 방법에 의하여 제조함에 있어서, 반응 생성물을 증류수 또는 알콜로 세척하여 미반응 B
2 O
3 (또는 H
3 BO
3 )을 제거하고, 미반응 B
2 O
3 (또는 H
3 BO
3 )이 제거된 반응 생성물을 묽은 황산에 분산시킨 후 일정 시간 교반하여 미반응 Mg와 반응 생성물의 MgO를 황산과 반응시킨 후 필터로 B
4 C를 분리하고, B
4 C가 분리된 여과액을 농축시켜 결정상의 MgSO
4 ·nH
2 O를 얻는 것으로 이루어지는 자전 고온반응 합성법에 의한 탄화붕소 분말 제조시 부산물 MgO의 환경 친화적 분리 방법을 제공한다. 본 발명에 의하면 비교적 간단한 공정에 의하여, 자전 고온 반응 합성법에 의해 B
2 O
3 , C, Mg의 혼합물로 부터 B
4 C 분말을 제조할 때 동반되는 과량의 MgO로부터 비료 성분인 결정상의 MgSO
4 을 얻을 수 있어 자원 재활용이 가능하고, 종래의 MgO 처리 방법인 폐산 처리에서 발생되는 환경 오염을 방지할 수 있게 된다.-
公开(公告)号：KR1020130104447A
公开(公告)日：2013-09-25
申请号：KR1020120025947
申请日：2012-03-14
Applicant: 한국과학기술연구원 , 엘지이노텍 주식회사
CPC classification number: C01B31/36 , C01B32/956 , C01B33/12
Abstract: PURPOSE: A production method of silicon carbide powder is provided to control the size and the crystalline of the silicon carbide powder by adjusting the heat processing temperature and time, and changing the composition of a gaseous silicon source and a solid carbon source. CONSTITUTION: A production method of silicon carbide powder comprises the following steps: mixing and drying metallic silicon, silica powder, and a thermoplastic resin to obtain a starting raw material for producing a gaseous silicon source; locating the starting raw material for producing the gaseous silicon source on the bottom of a graphite crucible, locating a graphite separator on the upper side of the starting raw material for producing the gaseous silicon source, and locating a solid carbon source on the upper side of the graphite separator before closing a lid of the graphite crucible to form a reaction system to produce the silicon carbide powder; and heat processing the reaction system under the argon atmosphere.
Abstract translation: 目的：提供碳化硅粉末的制造方法，通过调节热处理温度和时间，改变气态硅源和固体碳源的组成来控制碳化硅粉末的尺寸和结晶。 构成：碳化硅粉末的制造方法包括以下步骤：将金属硅，二氧化硅粉末和热塑性树脂混合干燥，得到气态硅源的制造原料， 将用于生产气态硅源的起始原料定位在石墨坩埚的底部，将石墨隔板定位在用于生产气态硅源的起始原料的上侧，并将固体碳源定位在 在石墨坩埚盖上关闭石墨隔板，形成碳化硅粉末的反应体系; 并在氩气氛下热处理反应体系。
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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：KR1019960037742A
公开(公告)日：1996-11-19
申请号：KR1019960011994
申请日：1996-04-19
Applicant: 한국과학기술연구원
Abstract: 본 발명은 진공 상태하에, 반응성 가스를 고분자, 세라믹, ITO 또는 유리 표면에 직접 불어 넣어주면서, 에너지를 가진 이온 입자를 고분자, 세라믹, ITO 또는 유리 표면에 조사하여 그 표면의 접촉각을 감소시켜 고분자, 세라믹, ITO 또는 유리 표면을 개질하는 방법에 관한 것이다. 본 발명에 따른 표면 개질 방법은 재료 표면의 접촉각을 크게 감소시킴으로서 수성 물감의 번집 증가, 다른 물질과의 접착력 증가 및 빛의 산란 방지 등을 가져올 수 있어 고분자, 세라믹, ITO 또는 유리의 응용 분야에서 널리 이용될 수 있다.
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公开(公告)号：KR1020050064697A
公开(公告)日：2005-06-29
申请号：KR1020030096274
申请日：2003-12-24
Applicant: 한국과학기술연구원
CPC classification number: B01J21/08 , A61K8/29 , A61Q17/04 , B01J35/004 , B01J35/023 , B01J37/0072 , B01J37/08 , B82Y30/00 , B82Y40/00
Abstract: 본 발명은 광 촉매 복합 나노 분말 및 이를 제조하는 방법에 관한 것으로, 복합 나노 분말이 각각 다른 밴드 갭 에너지를 갖는 이산화티타늄과 이산화규소 나노 분말로 구성된 것을 특징으로 하며, 가시광 및 태양광의 광 활용이 향상된 고효율 광촉매를 제공한다.
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