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Patent Agency Ranking
公开(公告)号：KR100746311B1
公开(公告)日：2007-08-06
申请号：KR1020030020858
申请日：2003-04-02
Applicant: 한국화학연구원
CPC classification number: B01J23/74 , B01J23/755 , B82Y30/00 , B82Y40/00 , C01B32/166 , C01B2202/36 , D01F9/12 , Y02P20/544
Abstract: This invention relates to a method to induce growth of carbon nanotubes using a liquid phased-hydrocarbon based material under a critical range of equilibrating between liquid and gas phases, thereby easily manipulating a required carbon source. This invention also relates to a method to facilitate easy generation of a carbon backbone of the carbon nanotube because the reaction is performed in the presence of a metal nanoparticle or a metal compound capable of spontaneously generating a seed catalyst which stimulates the growth of carbon nanotubes as well as secures safety enough for the industrial application by using a mild reaction condition within the critical range. Accordingly, this invention can produce the carbon nanotube with high transition efficiency under a mild condition with a relatively lower temperature and pressure than those in conventional gas phased-methods without using a costly equipment, thereby cost-effectively producing the carbon nanotube in large quantities.
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公开(公告)号：KR100678764B1
公开(公告)日：2007-02-06
申请号：KR1020060019631
申请日：2006-02-28
Applicant: 한국화학연구원
Abstract: A fabrication method of colloidal quantum dot nano-particle is provided to obtain the quantum dot having favorable concentration, particle size and bandgap energy without using expensive and toxic materials such as TOP or TOPO by adding bivalent anion type of sixth group metal(M2^2-) solution to second group metal(M1^2+) oleate. The method includes: first step of preparing second group metal oleate by reacting oleic acid in second group metal precursor solution of any one selected from Cd, Pb and Zn; second step of preparing a solution containing bivalance anionic sixth group metal by dissolving precursor of sixth group metal or cationic sixth group metal in a solvent with high boiling point of 200 to 350deg.C and proceeding reductive reaction of the solution at 100 to 200deg.C; and third step of producing colloidal quantum dot nano-particles by reacting the prepared oleate of second group metal and the prepared solution containing bivalance anionic sixth group metal at 100 to 250deg.C.
Abstract translation: 本发明提供一种胶体量子点纳米粒子的制备方法，通过添加二价阴离子型第六族金属（M2 ^ 2），不需要使用TOP或TOPO等昂贵有毒物质，获得具有良好浓度，粒径和带隙能量的量子点 - ）第二组金属（M1 ^ 2 +）油酸盐的溶液。 该方法包括：第一步，通过使油酸在选自Cd，Pb和Zn中任一种的第二族金属前体溶液中反应制备第二族金属油酸盐; 第二步，通过将第六族金属或阳离子第六族金属的前体溶解在高沸点为200-350℃的溶剂中并在100-200℃下进行该溶液的还原反应，制备含有双离子阴离子第六族金属的溶液.C ; 以及第三步，通过将所制备的第二组金属的油酸盐和所制备的含有双离子阴离子第六族金属的溶液在100至250℃下反应来制备胶体量子点纳米颗粒。
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公开(公告)号：KR100598082B1
公开(公告)日：2006-07-07
申请号：KR1020040053173
申请日：2004-07-08
Applicant: 한국화학연구원
IPC: C09D11/326 , C09D11/38
Abstract: 본 발명은 부분 소수화된 잉크젯용 수계 고농도 금속 나노 졸의 제조방법에 관한 것으로서, 더욱 상세하게는 금속염 수용액에 고분자 전해질을 첨가하여 고분자-금속염 착체를 형성시킨 후 이를 환원제로 처리하여 금속 나노 졸을 제조함에 있어서, 상기 고분자 전해질로서는 아크릴계 반복단위, 폴리에틸렌글리콜류가 결합된 아크릴레이트계 반복단위 및 아크릴아마이드 반복단위를 포함하여 구성되어, 친수부와 소수부가 함께 도입된 주쇄(main chain)와, 상기 주쇄의 일부분에 친수성이 강한 고분자 측쇄(side chain)가 결합되어 있는 그래프트(graft) 공중합체를 선택 사용함으로써, 생성된 금속 나노 졸의 입자크기가 100 ㎚ 이하로 작고 균일하면서도 잉크젯 기법으로 소수성 기판에 직접 인쇄가 가능하도록 부분 소수화된 잉크젯용 수계 고농도 금속 나노 졸의 제조방법에 관한 것이다.
고분자 전해질, 금속 나노 졸, 소수성 기판-
公开(公告)号：KR1020060004162A
公开(公告)日：2006-01-12
申请号：KR1020040053173
申请日：2004-07-08
Applicant: 한국화학연구원
IPC: C09D11/326 , C09D11/38
CPC classification number: C09D11/326 , C08L33/26 , C09D11/38
Abstract: 본 발명은 부분 소수화된 잉크젯용 수계 고농도 금속 나노 졸의 제조방법에 관한 것으로서, 더욱 상세하게는 금속염 수용액에 고분자 전해질을 첨가하여 고분자-금속염 착체를 형성시킨 후 이를 환원제로 처리하여 금속 나노 졸을 제조함에 있어서, 상기 고분자 전해질로서는 아크릴계 반복단위, 폴리에틸렌글리콜류가 결합된 아크릴레이트계 반복단위 및 아크릴아마이드 반복단위를 포함하여 구성되어, 친수부와 소수부가 함께 도입된 주쇄(main chain)와, 상기 주쇄의 일부분에 친수성이 강한 고분자 측쇄(side chain)가 결합되어 있는 그래프트(graft) 공중합체를 선택 사용함으로써, 생성된 금속 나노 졸의 입자크기가 100 ㎚ 이하로 작고 균일하면서도 잉크젯 기법으로 소수성 기판에 직접 인쇄가 가능하도록 부분 소수화된 잉크젯용 수계 고농도 금속 나노 졸의 제조방법에 관한 것이다.
고분자 전해질, 금속 나노 졸, 소수성 기판-
公开(公告)号：KR1020040085982A
公开(公告)日：2004-10-08
申请号：KR1020030020858
申请日：2003-04-02
Applicant: 한국화학연구원
CPC classification number: B01J23/74 , B01J23/755 , B82Y30/00 , B82Y40/00 , C01B32/166 , C01B2202/36 , D01F9/12 , Y02P20/544 , B82B3/00 , C01B32/05
Abstract: PURPOSE: Provided is a method for producing carbon nanotubes at low temperature and low costs in a large quantity through liquid-state reaction by treating liquid hydrocarbon materials as carbon sources under supercritical condition. CONSTITUTION: Carbon nanotubes are produced by the following steps of: (i) putting a mixture of 80-99.999wt.% of hydrocarbon materials, one or more of mixtures selected from saturated hydrocarbon, unsaturated carbon, aromatic hydrocarbon and derivatives thereof, and 0.001-20wt.% of nucleus materials in a high pressure vessel, wherein the nucleus materials are nano-sized metal particles or metal oxides enabling formation of seeds, and the metals are one or more of mixtures selected from transition metals comprising Co, Ni and Fe, precious metals(Pt, Pd), alkali metals and alkali earth metals; (ii) applying pressure of 1-400atm. and 200-800deg.C of temperature to liquid hydrocarbon materials for 1-600min to be in equilibrium between liquid state and vapor state; (iii) cooling reactants(supercritical fluid) at a rate of 0.01-50deg.C/min which is the same as a heating rate; (iv) separating carbon nanotubes from reactants. The resultant carbon nanotubes are applied to field emitters, nano-composites and nano devices.
Abstract translation: 目的：提供一种通过在超临界条件下处理液态烃材料作为碳源，通过液态反应在低温低成本生产碳纳米管的方法。 构成：碳纳米管通过以下步骤制备：（i）将80-99.999重量％的烃材料，一种或多种选自饱和烃，不饱和碳，芳族烃及其衍生物的混合物和0.001 -20重量％的核材料在高压容器中，其中核材料是能够形成种子的纳米尺寸金属颗粒或金属氧化物，并且金属是一种或多种选自包含Co，Ni和Fe的过渡金属的混合物 ，贵金属（Pt，Pd），碱金属和碱土金属; （ii）施加1-400atm的压力。 和200-800℃的温度对液态烃材料1-600min处于液态和蒸汽状态之间的平衡状态; （iii）以与加热速度相同的0.01-50℃/分钟的速度冷却反应物（超临界流体）; （iv）从反应物中分离碳纳米管。 所得碳纳米管应用于场发射体，纳米复合材料和纳米器件。
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