公开(公告)号：KR100503132B1

公开(公告)日：2005-07-22

申请号：KR1020020069146

申请日：2002-11-08

Applicant: 한국화학연구원

Inventor： 강윤찬 ,  김창해 ,  박승혁 ,  박희동

IPC: B22F9/08

Abstract: 본 발명은 구형 니켈 금속 미세분말의 제조방법에 관한 것으로서, 분무열분해 공정을 이용하여 니켈 금속 미세분말을 제조함에 있어서, 니켈 전구체 물질과 함께 첨가제로서 에틸렌디아민테트라아세트산계, 에탄올아민계 및 에틸렌디아민계 화합물 중에서 선택된 1종 이상의 킬레이트화제(chelating agent)를 첨가하는 것을 특징으로 하며, 본 발명의 방법에 따라 제조된 니켈 금속 미세분말은, 종래에 첨가제 없이 금속 전구체 물질만을 사용하여 제조하는 방법과 달리, 니켈 금속 미세분말의 형태, 평균 크기 및 크기 분포 특성이 개선되며 속이 차고 균일한 미세한 크기를 갖는 구형의 니켈 금속 미세분말을 제조할 수 있다.

公开(公告)号：KR100496051B1

公开(公告)日：2005-06-16

申请号：KR1020020062483

申请日：2002-10-14

Applicant: 한국화학연구원

Inventor： 강윤찬 ,  김은정 ,  이동열 ,  박희동

IPC: C09K11/77

Abstract: 본 발명은 하기 화학식 1로 표시된, 유로피움으로 활성화된 이트륨 가돌리늄 보레이트계 적색 형광체 및 그의 제조방법에 관한 것으로서, 본 발명에 따른 이트륨 가돌리늄 보레이트계 형광체는 전구체 용액 제조시 형광체 모체로서 이트륨(Y), 가돌리늄(Gd) 및 붕소(B)를 사용하고 상기 모체를 도핑하기 위한 활성제로서 유로피움(Eu)을 사용하며, 특히 전구체 용액의 수소이온 농도를 특정 범위로 제어함에 따라, 발광 특성이 우수하고 입자 형태 및 분포가 크게 향상되며, 박형화 및 경량화가 용이하여 평판디스플레이 형광체로서 유용하게 사용될 수 있다:

(Y
1-xy Gd
x )BO
3 :Eu
y


상기 식에서,
0〈x〈1이고, 0

公开(公告)号：KR100458126B1

公开(公告)日：2004-11-20

申请号：KR1020020001626

申请日：2002-01-11

Applicant: 한국화학연구원

Inventor： 박희동 ,  강윤찬 ,  김창해 ,  강희상

IPC: C09K11/59 ,  B82B3/00

Abstract: PURPOSE: Provided are a high efficiency green phosphor which is suitable for long length UV light emitting diode(LE) and actively light emitting liquid crystal display, and a method for producing the same. CONSTITUTION: The green phosphor based on barium strontium silicate, is represented by formula 1: (Ba1-xSrx)2SiO4:Eu2+yMz(wherein M is Ho, Er, Ce, Y or Gd, 0

Abstract translation: 目的：提供一种适用于长尺寸紫外发光二极管（LE）和有源发光液晶显示器的高效绿色荧光粉及其制备方法。 构成：基于硅酸钡锶的绿色磷光体由式1表示：（Ba1-xSrx）2SiO4：Eu2 + yMz（其中M是Ho，Er，Ce，Y或Gd，0

公开(公告)号：KR1020040085039A

公开(公告)日：2004-10-07

申请号：KR1020040020932

申请日：2004-03-26

Applicant: 한국화학연구원

Inventor： 김창해 ,  박정규 ,  박희동

IPC: C09K11/71

CPC classification number: C09K11/7734 ,  H01L33/502

Abstract: PURPOSE: Provided is a strontium silicate-based phosphor, which shows a broad spectrum of wavelengths of between 500 and 700 nm, has improved color purity and gives stable light-emitting characteristics for a long time even under high temperature. CONSTITUTION: The strontium silicate-based phosphor is represented by the formula of Sr3-xSiO5:Eu2+, wherein x ranges from 0 to 1 (excluding 0). The strontium silicate-based phosphor is prepared by the method comprising the steps of: forming a mixture containing strontium carbonate(SrCO3), silica(SiO2) and europium oxide(Eu2O3); drying the mixture; and heat-treating the dried mixture under reductive atmosphere. A light-emitting diode includes a light-emitting chip(104), and the strontium silicate-based phosphor(108) excited by the light emitted from the light-emitting diode chip(104).

Abstract translation: 目的：提供一种硅酸锶基荧光体，其表现出广泛的波长范围在500和700nm之间，即使在高温下也能长时间提供稳定的发光特性。 构成：硅酸锶基荧光体由Sr3-xSiO5：Eu2 +的式表示，其中x的范围为0至1（不包括0）。 通过包括以下步骤的方法制备硅酸锶基荧光体：形成含有碳酸锶（SrCO 3），二氧化硅（SiO 2）和氧化铕（Eu 2 O 3）的混合物; 干燥混合物; 并在还原气氛下对干燥的混合物进行热处理。 发光二极管包括发光芯片（104）和由发光二极管芯片（104）发射的光激发的硅酸锶基荧光体（108）。

公开(公告)号：KR1020040078759A

公开(公告)日：2004-09-13

申请号：KR1020030013603

申请日：2003-03-05

Applicant: 한국화학연구원

Inventor： 강윤찬 ,  이교광 ,  박희동

IPC: C01G23/00 ,  B82B3/00

CPC classification number: C01G23/003 ,  C01P2004/64

Abstract: PURPOSE: A method for preparing a nano-sized titanate-based powder and a nano-sized titanate-based powder prepared by the method are provided, to produce a non-cohesive nano-sized titanate-based powder massively. CONSTITUTION: The method comprises the steps of dissolving a titanate-based precursor material, an organic carboxylic acid and an additive selected from a glycol and polyvalent alcohols in a solvent to prepare a titanate-based precursor solution; generating a liquid drop from the titanate-based precursor solution; and drying the liquid drop, sintering the dried one and milling the sintered one to prepare a titanate-based powder. Preferably the titanate-based precursor material is at least one selected from the group consisting of a titanium alkoxide, a titanium chloride, a titanium hydroxide and a titanium oxide; the solvent is water, an alcohol or a weak acid aqueous solution; the glycol is at least one selected from the group consisting of ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, polyethylene glycol, polypropylene glycol, triethylene glycol, tetraethylene glycol and butanediol-1,4-hexylene glycol oxylene glycol; the organic carboxylic acid is at least one selected from the group consisting of citric acid, malic acid, mesotartaric acid, pyruvic acid and meconic acid.

Abstract translation: 目的：提供一种制备纳米尺寸钛酸酯基粉末和通过该方法制备的纳米尺寸钛酸酯基粉末的方法，以大量生产非粘性纳米尺寸的钛酸酯基粉末。 方案：该方法包括将钛酸酯基前体材料，有机羧酸和选自二元醇和多元醇的添加剂溶解在溶剂中以制备钛酸酯基前体溶液的步骤; 从钛酸盐前体溶液中产生液滴; 干燥液滴，烧结干燥后的粉末，研磨烧结后的粉末。 钛酸酯类前体材料优选为选自钛醇盐，氯化钛，氢氧化钛和氧化钛中的至少一种; 溶剂为水，醇或弱酸水溶液; 二醇是选自乙二醇，丙二醇，二甘醇，二丙二醇，聚乙二醇，聚丙二醇，三甘醇，四甘醇和丁二醇-1,4-亚己基二醇二醇的至少一种; 有机羧酸是选自柠檬酸，苹果酸，间酒石酸，丙酮酸和肉豆蔻酸中的至少一种。

公开(公告)号：KR100447947B1

公开(公告)日：2004-09-08

申请号：KR1020010075490

申请日：2001-11-30

Applicant: 한국화학연구원

Inventor： 박희동 ,  김창해 ,  박정규 ,  박상미 ,  정양선

IPC: C09K11/80

Abstract: PURPOSE: A terbium activated CaO-Gd2O3-Al2O3 three-component green fluorescent substance composition for VUV excitation is provided, which composition has a short afterglow time in VUV and an excellent emission luminance and is suitable for a plasma display panel. CONSTITUTION: The CaO-Gd2O3-Al2O3 three-component green fluorescent substance composition is represented by CakGdlTbmAlnO£k+3/2(l+m+n)|, wherein 0.20

Abstract translation: 目的：提供一种用于VUV激发的铽活化的CaO-Gd 2 O 3 -Al 2 O 3三组分绿色荧光物质组合物，该组合物在VUV中具有短的余辉时间和优异的发光亮度，并且适用于等离子体显示面板。 构成：CaO-Gd 2 O 3 -Al 2 O 3三组分绿色荧光物质组合物用CakGdlTbmAlnO·k + 3/2（1 + m + n）1表示，其中0.20≤k≤0.31,0.20≤l≤ ; =0.31,0.001≤m≤0.1,0.45≤n≤0.55和k + 1 + m + 1 = 1。 组合物由CakGdlTbmAlnO + k + 3/2（1 + m + n）|表示，其中0.20≤k≤0.40,0.05≤l≤0.40,0.001≤m≤0.30,0.30 ＆lt; = n <= 0.65，并且k + 1 + m + 1 = 1。 该组合物用CakGdlTbmAlnO·k + 3/2（1 + m + n）1表示，其中0.60≤k≤0.7,0.0≤l≤0.1,0.001≤m≤0.1,0.25 ＆lt; = n <= 0.35，并且k + 1 + m + 1 = 1。 该组合物用CakGdlTbmAlnO + k + 3/2（1 + m + n）|表示，其中0.05≤k≤0.12，l =0,0.001≤m≤0.11,0.85≤n≤1。 = 0.95，并且k + 1 + m + 1 = 1。 该组合物用CakGdlTbmAlnO·k + 3/2（1 + m + n）|表示，其中k =0,0.35≤1≤0.55,0.001≤m≤0.17,0.40≤n≤1。 = 0.60，并且k + 1 + m + 1 = 1。 组合物由CakGdlTbmAlnO·k + 3/2（1 + m + n）1表示，其中k = 0,0.20 <=1≤0.35,0.001≤m≤0.17,0.60≤n< = 0.70，并且k + 1 + m + 1 = 1。 此外，组合物由CakGd1TbmAlnO3 + k + 3/2（1 + m + n）|表示，其中k =0,0.65≤1≤0.75,0.001≤m≤0.23,0.25≤n< ; = 0.30，并且k + 1 + m + 1 = 1。

公开(公告)号：KR1020040072871A

公开(公告)日：2004-08-19

申请号：KR1020030008527

申请日：2003-02-11

Applicant: 한국화학연구원

Inventor： 강윤찬 ,  정경열 ,  이동열 ,  박희동

IPC: C09K11/64

CPC classification number: C09K11/7734 ,  C04B35/6267 ,  C04B2235/3217 ,  C09K11/7731 ,  H01J2211/42 ,  Y02B20/181

Abstract: PURPOSE: Provided is a process for producing a blue phosphor for a plasma display panel, which keeps a spherical shape and improves a thermal property, an optical property, and the brightness and lifetime of goods. CONSTITUTION: The process comprises the steps of: spraying a precursor solution containing an aluminum(Al) compound, a barium(Ba) compound, a magnesium(Mg) compound, and an europium(Eu) compound and drying and heat-decomposing at 200-1600deg.C to obtain phosphor particles, wherein the total concentration of the precursor solution is 0.02-3M; heat-treating the phosphor particles under a vacuum of 10¬-1 to 10¬-3mmHg at 200-1000deg.C; reduction heat-treating the heat-treated phosphor particles under an atmospheric pressure at 1300-1500deg.C by using a hydrogen/nitrogen mixture gas.

Abstract translation: 目的：提供一种制造用于等离子体显示面板的蓝色荧光体的方法，其保持球形并提高了热性能，光学性能以及商品的亮度和寿命。 方法：该方法包括以下步骤：喷涂含有铝（Al）化合物，钡（Ba）化合物，镁（Mg）化合物和铕（Eu）化合物的前体溶液，并在200℃下干燥和热分解 -1600℃以获得荧光体颗粒，其中前体溶液的总浓度为0.02-3M; 在200-1000℃的10〜1〜10〜3mmHg的真空下热处理荧光体粒子; 通过使用氢/氮混合气体在1300-1500℃的大气压下还原热处理的荧光体颗粒进行热处理。

公开(公告)号：KR1020040069404A

公开(公告)日：2004-08-06

申请号：KR1020030005760

申请日：2003-01-29

Applicant: 한국화학연구원

Inventor： 강윤찬 ,  손종락 ,  박희동

IPC: C01F17/00 ,  B82Y40/00

CPC classification number: C01F17/0043 ,  C01P2004/64

Abstract: PURPOSE: Provided is a preparation method of nano-sized ceria powder(CeO2) with no agglomeration by forming hollow or porous ceria precursor powder by thermal spraying ceria precursor solution containing organic materials. CONSTITUTION: The CeO2 powder is prepared by the following steps of: (i) preparing ceria precursor solution, having 0.02-3M of Ce, by dissolving cerium salt selected from acetate, nitrate, chloride or hydroxide of cerium and organic additives comprising carboxylic acid and glycol(or multivalent alcohol) into water or alcohol, wherein cerium salt and organic additives are mixed in a molar ratio of 1 : 0.001-2, and 0.1-0.3M of ethylenediaminetetraacetic acid(EDTA) is optionally added to form polymeric materials. The organic additives are carboxylic acid(citric acid, malic acid or pyruvic acid), and glycol(ethylene glycol, propylene glycol or polyethylene glycol) or multivalent alcohol(trivalent alcohol or tetravalent alcohol), wherein carboxylic acid and glycol or multivalent alcohol are mixed in a weight ratio of 1 : 0.1-10; (ii) thermal spraying precursor solution to form liquid drops(0.01-100micrometer size); (iii) thermal drying liquid drops at 200-1500deg.C for 0.1-10sec to form hollow or porous ceria precursor powder by decomposing organic or polymeric precursors; (iv) sintering ceria precursor powder at 500-1200deg.C for 10-600min and milling. Also, 1-50mol% of at least one metal selected from Y, Gd, Sm, Zr, Zn, Sc, Yb, etc. is optionally added to the step(i) for the preparation of metal-doped ceria powder.

Abstract translation: 目的：提供一种纳米二氧化铈粉末（CeO2）的制备方法，通过热喷涂含有机材料的二氧化铈前体溶液，通过形成中空或多孔二氧化铈前体粉末而不凝聚。 构成：通过以下步骤制备CeO 2粉末：（i）通过溶解选自乙酸盐，硝酸盐，氯化物或铈的氢氧化物的铈盐和包含羧酸的有机添加剂，制备具有0.02-3M Ce的二氧化铈前体溶液， 乙二醇（或多元醇）转化成水或醇，其中铈盐和有机添加剂以1:0.002-2的摩尔比混合，并且任选地加入0.1-0.3M的乙二胺四乙酸（EDTA）以形成聚合物。 有机添加剂是羧酸（柠檬酸，苹果酸或丙酮酸）和二醇（乙二醇，丙二醇或聚乙二醇）或多元醇（三价醇或四价醇），其中羧酸和二醇或多价醇混合 重量比为1：0.1-10; （ii）热喷雾前体溶液以形成液滴（0.01-100微米尺寸）; （iii）热干燥液体在200-1500℃下滴加0.1-10秒，通过分解有机或聚合物前体形成中空或多孔二氧化铈前体粉末; （iv）在500-1200℃烧结二氧化铈前体粉末10-600分钟并研磨。 此外，为了制备金属掺杂的二氧化铈粉末，任选地在步骤（i）中加入1-50mol％的选自Y，Gd，Sm，Zr，Zn，Sc，Yb等的至少一种金属。

公开(公告)号：KR1020040040833A

公开(公告)日：2004-05-13

申请号：KR1020020069146

申请日：2002-11-08

Applicant: 한국화학연구원

Inventor： 강윤찬 ,  김창해 ,  박승혁 ,  박희동

IPC: B22F9/08

Abstract: PURPOSE: A method for preparing spherical fine nickel metal powder is provided to prepare spherical nickel metal powder an inner part of which is filled with the additives by adding additives capable of reacting with nickel when preparing a precursor spray solution in manufacturing of fine nickel metal powder using spray pyrolysis. CONSTITUTION: The method for preparing spherical fine nickel metal powder comprises a first step of preparing a precursor solution by dissolving one or more of additives selected from a nickel compound selected from nitrate, acetate, chloride, hydrate and sulfate of nickel, 0.01 to 1 mole of ethylenediaminetetraacetic acid based compound on the basis of mole of nickel, 0.01 to 1 mole of ethanolamine based compound and 0.001 to 15 mole of ethylenediamine based compound into distilled water or alcohol; a second step of generating droplets having diameter of 0.1 to 100 μm by injecting the precursor solution into a droplet sprayer; and a third step of drying and pyrolyzing the generated droplets in the reactor temperature range of 600 to 1,500 deg.C, wherein the precursor solution is in the metal concentration range of 0.005 to 2 M, wherein the method further comprises a step of heat treating powder produced when drying and heat treating the generated droplets at an oxidation atmosphere in the third step again at a reduction atmosphere.

Abstract translation: 目的：提供一种制备球形镍镍金属粉末的方法，制备球形镍金属粉末，其内部填充有添加剂，当制备细镍金属粉末时制备前体喷雾溶液时，加入能与镍反应的添加剂 使用喷雾热解。 构成：制备球形细镍金属粉末的方法包括：通过将一种或多种选自硝酸盐，乙酸盐，氯化物，水合物和硫酸镍的镍化合物中选出的一种或多种添加剂溶解在0.01至1摩尔中来制备前体溶液的第一步骤 的乙二胺四乙酸基化合物为基于镍的摩尔数，0.01〜1摩尔乙醇胺系化合物和0.001〜15摩尔乙二胺系化合物为蒸馏水或醇; 通过将前体溶液注入到液滴喷雾器中产生直径为0.1至100μm的液滴的第二步骤; 以及在600至1500℃的反应器温度范围内干燥和热解所产生的液滴的第三步骤，其中前体溶液的金属浓度范围为0.005至2M，其中该方法还包括热处理步骤 在还原气氛下再次在第三步骤中在氧化气氛下干燥和热处理生成的液滴时产生的粉末。

公开(公告)号：KR1020040033407A

公开(公告)日：2004-04-28

申请号：KR1020020062483

申请日：2002-10-14

Applicant: 한국화학연구원

Inventor： 강윤찬 ,  김은정 ,  이동열 ,  박희동

IPC: C09K11/77

CPC classification number: C09K11/7797 ,  C01P2004/03 ,  C04B35/6261 ,  C04B35/6267 ,  C04B2235/3224 ,  H01J31/123 ,  Y02B20/181

Abstract: PURPOSE: An yttrium gadolinium borate-based fluorescent substance activated with europium and its preparation method are provided, to improve a luminous characteristic and the shape and distribution of particles by control the pH of a precursor solution. CONSTITUTION: The yttrium gadolinium borate-based fluorescent substance is represented by (Y(1-x-y)Gdx)BO3:Euy, wherein 0

Abstract translation: 目的：提供用铕活化的钇钆硼酸盐荧光物质及其制备方法，通过控制前体溶液的pH来提高颗粒的发光特性和形状和分布。 构成：由（Y（1-x-y）Gd x）BO 3：Eu y表示的硼酸钇基荧光物质，其中0