公开(公告)号：WO2003089374A1

公开(公告)日：2003-10-30

申请号：PCT/KR2003/000756

申请日：2003-04-14

Applicant: LG CHEM, LTD. ,  NOH, Jun-Seok ,  KWON, Tae-Hyun ,  CHO, Seung-Beom ,  HONG, Hye-Jeong ,  HAN, Dae-Gon

Inventor： NOH, Jun-Seok ,  KWON, Tae-Hyun ,  CHO, Seung-Beom ,  HONG, Hye-Jeong ,  HAN, Dae-Gon

IPC: C01F17/00

CPC classification number: B82Y30/00 ,  C01F17/0043 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/10 ,  C01P2004/30 ,  C01P2004/52 ,  C01P2004/62 ,  C01P2004/64

Abstract: The present invention relates to a method for preparing single crystalline cerium oxide nanopowder capable of easily controlling the shape and granularity of particles. The method includes preparing cerium hydroxide by precipitating a cerium salt in the presence of a solvent mixture of organic solvent and water and hydrothermally reacting the prepared cerium hydroxide. The prepared single crystalline cerium oxide has a particle size of not less than about 30 nm and an excellent degree of dispersion.

Abstract translation: 本发明涉及能够容易地控制粒子的形状和粒度的单晶二氧化铈纳米粉末的制备方法。 该方法包括通过在有机溶剂和水的溶剂混合物存在下沉淀铈盐来制备氢氧化铈，并使所制备的氢氧化铈水热反应。 所制备的单晶氧化铈具有不小于约30nm的粒度和优异的分散度。

公开(公告)号：WO2003059819A1

公开(公告)日：2003-07-24

申请号：PCT/KR2003/000009

申请日：2003-01-03

Applicant: LG CHEM, LTD. ,  HONG, Hye-Jeong ,  KWON, Tae-Hyun ,  CHO, Seung-Beom ,  NHO, Jun-Seok ,  HAN, Dae-Gon

Inventor： HONG, Hye-Jeong ,  KWON, Tae-Hyun ,  CHO, Seung-Beom ,  NHO, Jun-Seok ,  HAN, Dae-Gon

IPC: C01F7/00

CPC classification number: C01F7/448 ,  B82Y30/00 ,  C01F7/36 ,  C01P2004/03 ,  C01P2004/32 ,  C01P2004/52 ,  C01P2004/64 ,  C01P2006/80 ,  C09K3/1463 ,  Y10S977/775 ,  Y10S977/811

Abstract: The present invention relates to a preparation method of α-alumina nano powder, and more particularly to a preparation method of α-alumina nano powder that has a uniform particle shape and size distribution, is capable of being produced at a low temperature, and contains less than 20ppm of alkali metals such as Na and K. the α-alumina nano powder is prepared by glycolating aluminium alkoxide in glycol solution containing the α-iron oxide or α-alumina nucleation seed and carrying out glyco thermal reaction.

Abstract translation: 本发明涉及α-氧化铝纳米粉末的制备方法，更具体地说涉及具有均匀粒子形状和粒度分布的α-氧化铝纳米粉末的制备方法，其能够在低温下生产，并且含有 低于20ppm的碱金属如Na和K.通过将含有α-氧化铁或α-氧化铝成核种子的乙二醇溶液中的醇铝化物进行糖热反应来制备α-氧化铝纳米粉末。