# US 7,611,650 B2 · Nanopowders synthesis apparatus

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 7,611,650 B2
- Document ID: US7611650B2
- Status: Granted
- Kind: B2
- Application number: 11/432,422
- Filed: 2006-05-10
- Published: 2007-03-15
- Granted: 2009-11-03
- Earliest claimed: 2005-09-14
- Assignees: Hon Hai Precision Industry Co., Ltd.
- Inventors: Chi-Chuang Ho; Chuan-De Huang; Bor-Yuan Hsiao
- Web page: https://patentgrep.com/patent/US7611650B2

## CPC

- B01J 14/00: Chemical processes in general for reacting liquids with liquids; Apparatus specially adapted therefor (B01J8/00, B01J19/08 take precedence)
- B22F 9/24: starting from liquid metal compounds, e.g. solutions
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- C01G 1/02: Oxides
- C01G 23/0536: {by hydrolysing chloride-containing salts}
- B01J 2208/00548: Flow
- B01J 2219/1923: square or square-derived
- B22F 2998/00: Supplementary information concerning processes or compositions relating to powder metallurgy
- C01P 2004/64: Nanometer sized, i.e. from 1-100 nanometer
- Y10S 977/896: Chemical synthesis, e.g. chemical bonding or breaking
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B22F: WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (making alloys by powder metallurgy C22C); APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- C01G: COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts or peroxyacids C01B15/00; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium, or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds containing nitrogen, other non-metals and metal C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; compounds having molecular sieve properties but not having base-exchange properties C01B37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B39/00; cyanides C01C3/08; salts of cyanamide C01C3/16; thiocyanates C01C3/20)
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A nanopowders synthesis apparatus includes a reaction chamber, the reaction chamber having a top portion, a bottom portion opposite to the top portion, a sidewall adjoining the top and the bottom portion, and an inlet and an outlet; a first sprayer formed in the sidewall configured for spraying a first reactant into the reaction chamber therefrom; and a second sprayer formed in the bottom portion configured for spraying a second reactant into the reaction chamber therefrom. The inlet formed in the top portion configured for injecting a liquid medium, and the outlet formed in the bottom portion configured for releasing the liquid medium. A nanopowders synthesis method is also provided.

## Claims

### Claim 1

A nanopowder synthesis apparatus comprising:
a reaction chamber, the reaction chamber having:
a top portion;
a bottom portion opposite to the top portion;
a sidewall adjoining the top and the bottom portion;
an inlet formed in the top portion configured for injecting a liquid medium; and
an outlet formed in the bottom portion configured for releasing the liquid medium;
a first sprayer formed in the sidewall configured for spraying a first reactant into the reaction chamber therefrom; and
a second sprayer formed in the bottom portion configured for spraying a second reactant into the reaction chamber therefrom.

### Claim 2 (depends on 1)

The nanopowder synthesis apparatus in accordance with claim 1, wherein the reaction chamber has an inverted-trapezoid-shaped cross-section.

### Claim 3 (depends on 2)

The nanopowder synthesis apparatus in accordance with claim 2, wherein the sidewall is perpendicular to the top portion and the bottom portion.

### Claim 4 (depends on 1)

The nanopowder synthesis apparatus in accordance with claim 1, wherein the inlet comprises a valve.

### Claim 5 (depends on 1)

The nanopowder synthesis apparatus in accordance with claim 1, wherein the outlet comprises a valve.

### Claim 6

A nanopowder synthesis method comprising the steps of:
providing a reaction chamber, the reaction chamber having a top portion, a bottom portion opposite to the top portion, a sidewall adjoining the top portion and the bottom portion, and an inlet and an outlet configured in the top portion and the bottom portion respectively;
providing a first sprayer and a second sprayer formed in the sidewall and the bottom portion respectively;
spraying a first reactant into the reaction chamber from the first sprayer;
spraying a second reactant into the reaction chamber from the second sprayer to react with the first reactant;
collecting products of reaction from the outlet by injecting a liquid medium via the inlet; and
separating the products from the liquid medium and forming nanopowders therefrom.

### Claim 7 (depends on 6)

The nanopowder synthesis method in accordance with claim 6, wherein the liquid medium is selected from group comprising water, ethanol, acetone, ether, chloroform, and ethyl acetate.

### Claim 8 (depends on 6)

The nanopowder synthesis method in accordance with claim 6, wherein the separating step is performed by filtering separation.

### Claim 9 (depends on 6)

The nanopowder synthesis method in accordance with claim 6, wherein the separating step is performed by centrifugal separation.

### Claim 10 (depends on 6)

The nanopowder synthesis method in accordance with claim 6, wherein the nanopowders have an average grain size in the range from 20 nanometers to 150 nanometers.