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    • 2. 发明授权
    • Process for producing weakly agglomerated nanoscalar particles
    • 生产弱聚集的纳米级颗粒的方法
    • US5935275A
    • 1999-08-10
    • US945411
    • 1997-10-29
    • Detlef BurgardRudiger NassHelmut Schmidt
    • Detlef BurgardRudiger NassHelmut Schmidt
    • C01B13/32B01J2/00B01J19/00C01F7/02C01G1/02C01G23/053C01G25/02C04B35/626B05D7/00B01D9/00
    • B82Y30/00B01J2/00C01G1/02C01G23/053C01G25/02C04B35/626C01P2004/64Y10T428/2991
    • A description is given of a process for producing weakly agglomerated, densified and/or crystallized nanosize particles which is characterized in that either(a) a suspension containing amorphous or partially crystalline nanosize particles is produced in a conventional manner from precursors for the nanosize particles, where the nanosize particles are produced in a solvent which has no solvent capability, or only a low solvent capability, for the particles and in the presence of at least one surface-blocking substance, or(b) an already formed powder comprising amorphous or partially crystalline nanosize particles is suspended in the solvent specified under (a) in the presence of the surface-blocking substance or substances specified under (a), or(c) a sol containing amorphous or partially crystalline nanosize particles is suspended in the solvent specified under (a) in the presence of the surface-blocking substance or substances specified under (a); andthe suspension thus produced is subjected to conditions which lead to a densification and/or crystallization of the nanosize particles.
    • PCT No.PCT / EP96 / 01756 Sec。 371日期1997年10月29日第 102(e)1997年10月29日PCT PCT 1996年4月26日PCT公布。 第WO96 / 34829号公报 日本1996年11月7日描述了一种生产弱聚集,致密化和/或结晶的纳米尺寸颗粒的方法,其特征在于(a)含有无定形或部分结晶的纳米尺寸颗粒的悬浮液以常规方式从前体制备 对于纳米尺寸颗粒,其中纳米尺寸颗粒在对于颗粒和至少一种表面阻挡物质存在下不具有溶剂能力或仅具有低溶剂能力的溶剂中制备,或(b)已经形成的纳米尺寸颗粒 包含无定形或部分结晶的纳米尺寸颗粒的粉末悬浮在(a)中指定的溶剂中,在表面阻挡物质或(a)或(c)所指定的物质的存在下,含有无定形或部分结晶的纳米尺寸颗粒的溶胶被悬浮 在(a)中规定的溶剂中,在表面阻挡物质或(a)规定的物质的存在下; 并且由此产生的悬浮液经受导致纳米尺寸颗粒的致密化和/或结晶的条件。