Apparatus and process for metal oxides and metal nanoparticles synthesis
AssigneeBeijing University of Technology
InventorsHong He, Hongxing Dai, Xuehong Zi
Life of this patent
Estimating the term…
Abstract
The present invention provides an approach to control the generation and grow of nanocrystal with membrane diffusion method and related apparatuses to produce inorganic oxide nanopowders and metal nanoparticles. With this method, the size and size distribution of inorganic oxide nanopowders and metal nanoparticles can be tuned. It overcomes the shortcomings possessed by the common chemical and physical method of preparing nanoparticles.
Claims17
An apparatus for producing inorganic metal oxide nanopowders and metal nanoparticles, comprising:
- a stirrer, a measuring pump, a reactor, a micro-membrane tube unit, a container, and an ultrasonic generator;
- wherein the micro-membrane tube unit is installed in the reactor, the reactor is coupled to the ultrasonic generator at a controlled temperature and frequency, the micro-membrane tube unit is connected via an inlet with the measuring pump that is linked to the container, the stirrer has an oar and is installed in the reactor, and wherein the micro-membrane tube unit comprises a plurality of micro-membrane tubes around a central axis of the reactor and are arranged along an axial direction of the central axis, micro-holes are formed on walls of the micro-membrane tubes, the size of the micro-holes on the walls of the micro-membrane tubes is ranged from 0.03 to 0.3 μm, and the oar of the stirrer is located within a space surrounded by the micro-membrane tubes.
An apparatus for producing inorganic metal oxide nanopowders and metal nanoparticles, comprising:
- a tubal reactor;
- a micro-membrane tube unit comprising a plurality of micro-membrane tubes arranged around a central axis of the tubal reactor;
- an ultrasonic generator coupled to the reactor;
- and
- a stirrer with an oar provided in the tubal reactor along the central axis of the tubal reactor and located within a space surrounded by the micro-membrane tubes;
- wherein the micro-membrane tubes comprise a closed end and an inlet, and the inlet is coupled to a measuring pump;
- micro-holes are formed on the walls of the micro-membrane tubes, the size of the micro-membrane holes is ranged from 0.03 to 0.3 μm.
An apparatus for producing inorganic metal oxide nanopowders and metal nanoparticles, comprising a plurality of tubal reactors arranged in parallel;
- wherein each of the tubal reactors is connected with an ultrasonic generator and contains therein a plurality of micro-membrane tubes arranged around a central axis of the tubal reactor, micro-holes are formed on walls of micro-holes are formed on the walls of the micro-membrane tubes, the size of the micro-membrane holes is ranged from 0.03 to 0.3 μm, and a stirrer with an oar is provided within a space surrounded by the micro-membrane tubes;
- wherein an inlet of each of the tubal reactors is connected to a common inlet and an outlet of each of the tubal reactors is connected to a common outlet;
- and
- wherein an inlet of the micro-membrane tubes in each of the tubal reactors is connected to another common inlet that is coupled to a measuring pump.
Dependencies are inferred from the claim text.