公开(公告)号：KR1020030045499A

公开(公告)日：2003-06-11

申请号：KR1020010076238

申请日：2001-12-04

Applicant: 한국화학연구원

Inventor： 강윤찬 ,  박희동 ,  강희상

IPC: C01B33/12 ,  B82Y40/00

CPC classification number: C01B33/18 ,  B01J6/008 ,  C01P2004/32 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/12

Abstract: PURPOSE: A silica powder is provided which is economical by using fumed silica as silica raw material, and in which prepared silica powder has completely spherical shape and densified structure, and a method for preparing the silica powder is provided. CONSTITUTION: In a method for preparing silica by spray pyrolysis, the method for preparing spherical shaped silica powder comprises a process (a) of preparing a silica precursor solution of 0.02 to 3 M by dispersing or dissolving nano silica (fumed silica) and tetraethyl orthosilicate (TEOS) into water; a process (b) of producing droplet having a diameter of 0.1 to 100 μm by injecting the precursor solution into sprayer; and a process (c) of obtaining silica by drying and pyrolyzing the droplet in the tubular reactor or flame reactor after injecting the produced droplet into high temperature tubular reactor(200 to 1,500 deg.C) or flame reactor(1,000 to 2,500 deg.C), wherein the nano silica (fumed silica) and tetraethyl orthosilicate (TEOS) are added to water in a weight ratio of 99:1 to 1:99 in the process (a), wherein the method further comprises a posttreatment process of heat treating silica particles obtained from the third process at a temperature of 300 to 1,500 deg.C for 1 to 5 hours, and wherein the sprayer is ultrasonic sprayer, air nozzle sprayer or ultrasonic nozzle unit.

Abstract translation: 目的：提供通过使用气相二氧化硅作为二氧化硅原料经济的二氧化硅粉末，其中制备的二氧化硅粉末具有完全球形和致密结构，并提供了制备二氧化硅粉末的方法。 构成：在通过喷雾热解制备二氧化硅的方法中，制备球形二氧化硅粉末的方法包括通过分散或溶解纳米二氧化硅（热解法二氧化硅）和原硅酸四乙酯制备0.02至3M的二氧化硅前体溶液的方法（a） （TEOS）进入水中; 通过将前体溶液注入喷雾器来制造直径为0.1〜100μm的液滴的工序（b） 以及（c）通过在将所产生的液滴注入高温管式反应器（200-1500℃）或火焰反应器（1000-2,500℃）中之后，通过干燥和热解管式反应器或火焰反应器中的液滴来获得二氧化硅 ），其中在方法（a）中将纳米二氧化硅（热解法二氧化硅）和原硅酸四乙酯（TEOS）以99:1至1:99的重量比加入到水中，其中该方法还包括热处理的后处理过程 二氧化硅颗粒，其在300〜1500℃的温度下从第三工序获得1〜5小时，其中，喷雾器是超声波喷雾器，空气喷嘴喷雾器或超声波喷嘴单元。

公开(公告)号：KR100376277B1

公开(公告)日：2003-03-17

申请号：KR1020000048628

申请日：2000-08-22

Applicant: 한국화학연구원

Inventor： 박희동 ,  강윤찬 ,  박승빈 ,  서대종

IPC: C09K11/00

Abstract: PURPOSE: Provided is a preparation method of red fluorescent material with monoclinic and cubic phase by using flame spray pyrolysis, wherein sprayed droplet is an individual fluorescent material having perfect spherical shapes with the filled inside and is uniformly distributed without coagulation. The material is used in the plasma display, field emission display and for the lamp in the cathode-ray tube. CONSTITUTION: The above red fluorescent material is represented by the formula 1:(YxGd1-x)2O3:Eu, wherein 0

Abstract translation: 目的：提供一种利用火焰喷雾热解法制备单斜晶系和立方晶系红色荧光材料的方法，其中喷雾液滴为单个荧光材料，具有完美的球形，内部填充且均匀分布而不凝固。 该材料用于等离子显示器，场发射显示器和阴极射线管中的灯。 构成：上述红色荧光材料由式1表示：（YxGd1-x）2O3：Eu，其中0≤x≤1。 所述制备方法包括：通过将由Y和Gd或其混合物组成的荧光主体和Eu活化剂溶解在蒸馏水中制备0.02-3M前体溶液，其中Eu与1摩尔主体的掺杂浓度为0.5-15摩尔％ 并且主体和活化剂选自它们的硝酸盐，乙酸盐和氯化物; 添加1-30wt。％的选自LiCl，KCl，NaCl，Li 2 CO 3，Na 2 CO 3，H 3 BO 3或其混合物大于2的熔融剂; 通过将上述前体溶液引入喷雾机如微波炉，空气喷嘴，微波喷嘴和过滤膨胀气溶胶发生器中，使上述材料的液滴具有0.1-100微米的直径; 使上述液滴在1,500-3,000℃通过扩散火焰反应器; 并在600-1,500℃下热处理荧光液滴并使其变成单斜或立方形。

公开(公告)号：KR100376276B1

公开(公告)日：2003-03-17

申请号：KR1020000053182

申请日：2000-09-07

Applicant: 한국화학연구원 ,  한국과학기술원

Inventor： 강윤찬 ,  박희동 ,  김경화 ,  박승빈 ,  노현숙

IPC: C09K11/54 ,  B82B3/00

Abstract: PURPOSE: Provided is a process for producing spherical green phosphor powder for a plasma display or a lamp by a spray-pyrolysis method optimizing the composition of precursors. CONSTITUTION: The process for producing the spherical green phosphor powder(formula, Zn2-xSiO4:Mnx) comprises the steps of: preparing a precursor solution of the phosphor powder by dissolving a zinc precursor selected from zinc nitrate, zinc acetate, and zinc chloride and a manganese precursor selected from manganese sulfide, manganese chloride, manganese acetate, and manganese nitrate in distilled water and dissolving 105-125%(based on the zinc) of tetraethyl ortho-silicate(TEOS) in distilled water with a very small amount of nitric acid and alcohol or dispersing nano-sized SiO2 powder, produced by a gas or liquid phase method, in the solution, wherein the total concentration of the precursor solution is 0.02-3M; injecting the precursor solution into a sprayer to generate droplets having a diameter of 0.1-100 micrometer; injecting the droplets into a tube type reactor with a high temperature of 200-1500deg.C: additionally, oxidation- or oxidation/reduction-heating the obtained phosphor powder at 800-1350deg.C for 1-5hours. In the formula, 0.011

Abstract translation: 目的：提供一种通过优化前体组成的喷雾热解方法生产用于等离子显示器或灯的球形绿色荧光体粉末的方法。 构成：球形绿色荧光体粉末（式Zn2-xSiO4：Mnx）的制造方法包括以下步骤：通过溶解选自硝酸锌，乙酸锌和氯化锌的锌前体，制备荧光粉的前体溶液和 在蒸馏水中选择硫化锰，氯化锰，醋酸锰和硝酸锰的锰前体，并且在蒸馏水中溶解105-125％（以锌计）的原硅酸四乙酯（TEOS）和极少量的硝酸 酸和醇的溶液中，或者将通过气相或液相法生产的纳米尺寸的SiO 2粉末分散在溶液中，其中前体溶液的总浓度为0.02-3M; 将前体溶液注入喷雾器以产生直径为0.1-100微米的液滴; 将液滴注入200-1500℃高温的管式反应器中。C：另外，将得到的荧光粉粉末在800-1350℃氧化或氧化/还原 - 加热1-5小时。 在该公式中，0.011

公开(公告)号：KR1020020085265A

公开(公告)日：2002-11-16

申请号：KR1020010024669

申请日：2001-05-07

Applicant: 한국화학연구원

Inventor： 강윤찬 ,  박희동 ,  임미애

IPC: C09K11/79 ,  B82B3/00

CPC classification number: C09K11/7706 ,  C01P2004/03 ,  C01P2004/64 ,  C04B35/6267 ,  C09K11/7774 ,  Y02B20/181

Abstract: PURPOSE: A spherical silicate-based fluorescent substance and its preparation method are provided, which fluorescent substance is remarkably improved in the light-emitting characteristic and is useful to a display or a lamp. CONSTITUTION: The spherical silicate-based fluorescent substance is represented by QxSiOy:D, wherein Q is Zn or Y; D is Mn, Ce, Tb or Eu; and 0.001

Abstract translation: 目的：提供一种球状硅酸盐类荧光物质及其制备方法，其荧光物质在发光特性方面显着提高，对显示器或灯具有用。 构成：球状硅酸盐基荧光物质由QxSiOy：D表示，其中Q为Zn或Y; D是Mn，Ce，Tb或Eu; 当Q为Zn时为0.001

公开(公告)号：KR1020020046101A

公开(公告)日：2002-06-20

申请号：KR1020000075656

申请日：2000-12-12

Applicant: 한국화학연구원

Inventor： 박희동 ,  강윤찬

IPC: C09K11/08

CPC classification number: C09K11/7797 ,  C01P2004/03 ,  C04B35/6267 ,  H01J11/42 ,  H01J2211/42 ,  Y02B20/181

Abstract: PURPOSE: A method for preparing a red fluorescent substance for PDP by spray pyrolysis and a red fluorescent substance for PDP prepared by the method are provided, to improve the shape of fluorescent substance powder and the brightness. CONSTITUTION: The method comprises the steps of dissolving a precursor which composes a fluorescent body capable of being dissolved in an aqueous alcohol, an active precursor doping the body and flux whose ratio of metal halides to carbonates is 1:0.1-40 by weight, into distilled water, respectively, to prepare 0.02-2 M fluorescent substance particle precursor solution; injecting the fluorescent substance particle precursor solution into a spraying machine to generating a liquid drop with a diameter of 0.1-100 micrometers; and injecting the liquid drop into a reactor of 200-1,500 deg.C to prepare a powdered fluorescent substance. The fluorescent substance is represented by (YxGd(1-x-y))BO3:Euy, wherein 0

Abstract translation: 目的：提供通过喷雾热解制备用于PDP的红色荧光物质和通过该方法制备的用于PDP的红色荧光物质的方法，以改善荧光物质粉末的形状和亮度。 方案：该方法包括以下步骤：将构成能够溶解在含水醇中的荧光体的前体，掺杂体的活性前体和金属卤化物与碳酸酯的重量比为1：0.1-40重量的助熔剂， 蒸馏水分别制备0.02-2M荧光物质颗粒前体溶液; 将荧光物质颗粒前体溶液注入喷雾机中以产生直径为0.1-100微米的液滴; 并将液滴注入200-1,500℃的反应器中以制备粉末状荧光物质。 荧光物质由（YxGd（1-x-y））BO3：Euy表示，其中0 <= x <= 1，0.01 <= y <= 0.1。

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

Inventor： 류병환 ,  공기정 ,  장현주 ,  최영민 ,  이재도 ,  강윤찬 ,  정하균 ,  김창균 ,  박한성

IPC: B82B3/00 ,  B82Y40/00 ,  C01B31/02

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.

公开(公告)号：KR100616513B1

公开(公告)日：2006-08-29

申请号：KR1020030077185

申请日：2003-11-01

Applicant: 삼성전기주식회사 ,  한국화학연구원

Inventor： 강윤찬 ,  조제희 ,  손철수

IPC: G02F1/13357

CPC classification number: C09K11/7783 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48257 ,  H01L2224/48465 ,  H01L2924/181 ,  Y02B20/181 ,  H01L2924/00014 ,  H01L2924/00 ,  H01L2924/00012

Abstract: 적색형광체가 개시된다.
본 발명에 따른 적색형광체는 하기 식 (1)의 구조를 갖는다.
(Li
(2-z)-x M
x )(MoO
4 )
y :Eu
z ,Sm
q (1)
(상기 식에서, M=K, Mg, Na, Ca, Sr 또는 Ba이고, 0≤x≤2, 0.5≤y≤5, 0.01≤z≤1.5, 0.001≤q≤1.0 임)
본 발명에 따른 적색형광체는 특히 405 nm 근처의 여기 광원에 의해 고휘도의 발광특성을 가지며 기존의 형광체에 비해 휘도가 6배 이상 높기 때문에, UV 여기 광원을 갖는 적색 LED, 백색 LED 및 능동발광형 액정 디스플레이 소자에 사용될 수 있다. 또한 본 발명에 따라 제조된 백색 LED소자는 연색지수가 90이상으로서 색표현이 우수하다
적색형광체, 백색 LED

公开(公告)号：KR100534017B1

公开(公告)日：2005-12-07

申请号：KR1020040009012

申请日：2004-02-11

Applicant: 한국화학연구원

Inventor： 정하균 ,  강윤찬

IPC: C09K11/78

Abstract: 본 발명은 신규한 지르콘산염계 형광체 조성물에 관한 것으로서, 더욱 상세하게는 모체로 Ca와 Zr을 함유하는 페로브스카이트 구조의 지르콘산염과 활성제로 희토류 이온으로 구성되어, 상기 희토류 이온이 칼슘 자리를 치환하여 들어가 결정학적으로 상분리가 없는 완전한 고용체를 형성하고 또한 상기 페로브스카이트 구조에 의한 광학적 물성이 변화되는 특성으로 저전압에서 가속전자에 의한 음극선발광 특성을 모두 나타내고, 활성제에 따라 청색, 녹색 및 적색발광이 모두 가능하고, 발광강도가 우수한 신규한 지르콘산염계 형광체 조성물에 관한 것이다.