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1. CN101346305 - Methods for production of metal oxide nano particles, and nano particles and preparations produced thereby

Office
China
Application Number 200680049325.2
Application Date 21.12.2006
Publication Number 101346305
Publication Date 14.01.2009
Publication Kind A
IPC
C01B 13/36
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
13Oxygen; Ozone; Oxides or hydroxides in general
14Methods for preparing oxides or hydroxides in general
36by precipitation reactions in solutions
CPC
C01B 13/36
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
13Oxygen; Ozone; Oxides or hydroxides in general
14Methods for preparing oxides or hydroxides in general
36by precipitation reactions in ; aqueous; solutions
B01J 23/16
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
23Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
16of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
B01J 35/0013
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35Catalysts, in general, characterised by their form or physical properties
0013Colloids
B01J 37/03
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
37Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
02Impregnation, coating or precipitation
03Precipitation; Co-precipitation
B82Y 30/00
BPERFORMING OPERATIONS; TRANSPORTING
82NANOTECHNOLOGY
YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
30Nanotechnology for materials or surface science, e.g. nanocomposites
C01G 1/02
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
1Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, or C01F, in general
02Oxides
Applicants Joma Internat AS
朱马国际公司
Inventors Vitner Asher
A·维特纳
Eyal Aharon
A·埃亚尔
Agents li fan
中国国际贸易促进委员会专利商标事务所
Priority Data 172837 27.12.2005 IL
Title
(EN) Methods for production of metal oxide nano particles, and nano particles and preparations produced thereby
(ZH) 制造金属氧化物纳米颗粒的方法以及由此制备的纳米颗粒和制品
Abstract
(EN)
The invention provides a method for the formation of small-size metal oxide particles, comprising the steps of: a) preparing a starting aqueous solution comprising at least one of metallic ion and complexes thereof, at a concentration of at least 0.1 % w/w of the metal component; b) preparing a modifying aqueous solution having a temperature greater than 5O0C; c) contacting the modifying aqueous solution with the starting aqueous solution in a continuous mode in a mixing chamber to form a modified system; d) removing the modified system from the mixing chamber in a plug-flow mode; wherein the method is characterized in that: i) the residence time in the mixing chamber is less than about 5 minutes; and iii) there are formed particles or aggregates thereof, wherein the majority of the particles formed are between about 2nm and about 500nm in size.

(ZH)

本发明提供用于形成小尺寸金属氧化物颗粒的方法,该方法包括以下步骤:a)制备起始水溶液,该溶液包括金属离子及其络合物中的至少一种,浓度为至少0.1%w/w的所述金属组分;b)制备温度高于50℃的调整水溶液;c)使调整水溶液在混合室中以连续方式与起始水溶液接触以便形成调整体系;d)以活塞流方式从混合室中移出调整体系;其中该方法的特征在于:i)在混合室中的停留时间少于约5分钟;和ii)存在形成的颗粒或其团聚物,其中大多数形成的颗粒的尺寸在约2nm与约500nm之间。

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