PRODUCTION OF LUMINESCENT FINE PARTICLES USING A LOW-PRESSURE SPRAY PYROLYSIS

使用低压喷雾热解生产发光细颗粒

• 批准号: 10650745
• 负责人: OKUYAMA Kikuo
• 金额: $ 2.05万
• 依托单位: Hiroshima University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650745/
• 关键词: SPRAY PYROLYSIS; PHOSPHORS; FINE PARTICLES; AEROSOLS; FUNCTIONAL MATERIALS; 液滴; 数値計算

In recent years, the development of the production process of submicron luminescent/phosphors fine particles (multicomponent oxide) with controlled in size and chemistry is become important. The particles is used in a various applications, for instance, at the plasma display panel (PDP). In general, luminescent particles are prepared using a solid-state method which necessary long-time synthesis process, a quite high temperature, milling, etc. These post-processing allow mixture of impurities, and this will lose the luminescent function of the particles prepared. The objective of our research is to investigate and apply a spray pyrolysis process with low-pressure system for preparation of particles. The atomizer used has a potential to generate droplet having size below I micrometer at a relatively high production rate. This research have been prepared the luminescent materials as multicomponent oxides particles using spray pyrolysis method. We have been investigated experimentally the … More influence of process parameters such as the droplet generation condition, size of the droplets, initial concentration and the other properties of the spraying solution, and heating rate, on morphology, chemistry and production yield of the final particles.The precursor of the multicomponent of the oxides included the dopants are prepared as spraying solutions. The solutions were converted into discrete droplets and introduced into a tubular electrical furnace with temperature gradient-controlled, then the final particles were collected at the outlet of the furnace. The application of spray pyrolysis process has been investigated on the preparation of a various luminescent particles such as YィイD22ィエD2SiOィイD25ィエD2 : Ce、YィイD23ィエD2AlィイD25ィエD2OィイD212ィエD2 : Tb、BaOィイD26ィエD2AlィイD22ィエD2OィイD23ィエD2 : Mn、YィイD22ィエD2OィイD23ィエD2 : Eu、CeィイD21-xィエD2TbィイD2xィエD2MgAlィイD211ィエD2OィイD219ィエD2. YィイD22ィエD2SiOィイD25ィエD2 : Tb、GdィイD22ィエD2OィイD23ィエD2 : Eu. As mentioned above, by using the traditional method, i e., solid-state synthesis, it is necessary, to operate long-time and a very high-temperature process to prepare materials having high luminescent intensity and crystallinity However a one-step process, i.e., spray pyrolysis could prepare non-agglomerate and high purity luminescent particles at a few seconds and at a relatively low temperature condition. By scaling-up, it is expectable in the near future to apply the proposed process in the industries. Less

近年来，具有可控尺寸和化学性质的亚微米发光/磷光体细颗粒（多组分氧化物）的生产工艺的发展变得重要。该颗粒用于各种应用中，例如用于等离子体显示面板（PDP）。一般来说，使用固态方法制备发光颗粒，其需要长时间的合成过程、相当高的温度、研磨等。这些后处理允许杂质的混合，并且这将失去所制备的颗粒的发光功能。本研究的目的是探讨及应用喷雾热解法低压系统来制备微粒。所使用的雾化器具有以相对高的生产率产生尺寸低于1微米的液滴的潜力。本研究采用喷雾热分解法制备了多组分氧化物发光材料.我们已经进行了实验研究， ...更多信息 工艺参数如液滴产生条件、液滴尺寸、喷涂溶液的初始浓度和其它性质以及加热速率对最终颗粒的形态、化学性质和生产产率的影响。将溶液转化为离散的液滴并引入温度梯度控制的管式电炉中，然后在炉出口收集最终颗粒。研究了喷雾热解法在制备各种发光颗粒如Y掺杂D22纳米D2 SiO掺杂D25纳米D2：Ce、Y掺杂D23纳米D2 Al掺杂D25纳米D2 O掺杂D212纳米D2：Tb、BaO掺杂D26纳米D2 Al掺杂D22纳米D2 O掺杂D23纳米D2：Mn、Y掺杂D22纳米D2 O掺杂D23纳米D2：Mn中的应用。Eu，Ce掺杂D21-x掺杂D2 Tb掺杂D2 x掺杂D2 MgAl掺杂D211掺杂D2 O掺杂D219掺杂D2。Y掺杂D22掺杂D2 SiO掺杂D25掺杂D2：Tb，Gd掺杂D22掺杂D2 O掺杂D23掺杂D2：Eu。如上所述，通过使用传统方法，即，固态合成需要长时间和非常高的温度来制备具有高发光强度和结晶度的材料。然而，一步法，即，喷雾热解可以在几秒钟内和在相对较低温度条件下制备非团聚和高纯度的发光颗粒。通过扩大规模，可以预期在不久的将来将所提出的方法应用于工业中。少

项目成果

Y. C. Kang, S.B. Park, I. W. Lenggoro and K. Okuyama: "Preparation of nonaggregated Y2O3 : Eu phosphor particles by a spray pyrolysis method"Journal of Materials Research. 14(6). 2611-2615 (1999)

Y.C.康，S.B.

Y.C.Kang: "Y_2SiO_5:Ce phosphor particles 0.5-1.4 μm in size spherical morphology"Journal of Solid State Chemistry. 146・1. 168-175 (1999)

Y.C.Kang：“Y_2SiO_5：尺寸为0.5-1.4μm的Ce磷光体颗粒”固体化学杂志146・1（1999）。

Y.C.Kang: "Luminescence characteristics of Y_2SiO_5:Tb phosphor particles directly prepared by the spray pylory's method"Journal of The Electrochemical Society. 146・3. 1227-1230 (1999)

Y.C.Kang：“喷雾幽门法直接制备的Y_2SiO_5:Tb荧光粉颗粒的发光特性”电化学会杂志146・3（1999）。

Y.C.Kang: "Photoluminescence properties of Ce_<1-x>Tb_xMgAl_<11>O_<19> phosphor particles prepared by spray pyrolysis" Japanese Journal of Applied Physics. (印刷中). (1999)

Y.C.Kang：“通过喷雾热解制备的Ce_<1-x>Tb_xMgAl_<11>O_<19>磷光体颗粒的光致发光特性”，《日本应用物理学杂志》（出版中）。

Y.C.Kang: "Photoluminescence properties of Ce_<1-x>Tb_x MgAl_<11>O_<19> phosphor particles prepared by spray pyrolysis"Japanese Journal of Applied Physics. 38. 2013-2016 (1999)

Y.C.Kang：“喷雾热解制备的Ce_<1-x>Tb_x MgAl_<11>O_<19>荧光粉颗粒的光致发光性能”日本应用物理学杂志。