Method and apparatus for manufacturing core-shell catalyst

Patent metadata

Field	Value
Publication number	US-11658307-B2
Application number	US-202016738840-A
Country	US
Kind code	B2
Filing date	Jan 9, 2020
Priority date	Dec 7, 2016
Publication date	May 23, 2023
Grant date	May 23, 2023

Abstract

The present disclosure relates to a method and an apparatus for manufacturing a core-shell catalyst, and more particularly, to a method and an apparatus for manufacturing a core-shell catalyst, in which a particle in the form of a core-shell in which the metal nanoparticle is coated with platinum is manufactured by substituting copper and platinum through a method of manufacturing a metal nanoparticle by emitting a laser beam to a metal ingot, and providing a particular electric potential value, and as a result, it is possible to continuously produce nanoscale uniform core-shell catalysts in large quantities.

First claim

What is claimed is:

1. An apparatus for manufacturing a core-shell catalyst, the apparatus comprising:
a reaction chamber which is divided into a first region and a second region, in which a height and a diameter of the second region are greater than a height and a diameter of the first region so that a flow of a solvent caused by a laser emission is minimized and a height of the solvent measured at a focal point controlled in advance is constantly maintained, and the first region and the second region are connected in a streamlined shape;
a reaction solution which is accommodated in the reaction chamber;
a laser light source which emits energy to a metal ingot in the first region, wherein an output of the laser light source is 0.1 to 40 J/cm2;
a solution injecting unit which injects a mixture solution including a copper precursor and a platinum precursor into the second region;
a display unit which measures and displays, in real time, a copper precursor content and a platinum precursor content in the second region, a type of the reaction solution, applied voltage, and the output of the emitted laser source;
a particle diameter measuring device which measures a particle diameter of a metal nanoparticle manufactured in the second region;
a reference electrode and a counter electrode which are supported in the reaction solution in the second region;
a power source unit which applies voltage to electrodes; and
a pump which circulates a solution discharged from the second region to the first region,
wherein a part of an upper surface in the first region of the reaction chamber is made of a glass material, a metal ingot holder is accommodated in the reaction chamber, and a metal ingot capsule is accommodated on the metal ingot holder.

2. The apparatus according to claim 1 , wherein the metal ingot capsule has a capsule shape having a hermetic structure in which the metal ingot is impregnated in the reaction solution.

3. An apparatus for manufacturing a core-shell catalyst, the apparatus comprising:
a reaction chamber which is divided into a first region and a second region, in which a height and a diameter of the second region are greater than a height and a diameter of the first region so that a flow of a solvent caused by a laser emission is minimized and a height of the solvent measured at a focal point controlled in advance is constantly maintained, and a variable orifice, which has a central portion protruding in a streamlined shape, is provided at an end in the first region;
a reaction solution which is accommodated in the reaction chamber;
a laser light source which emits energy to a metal ingot in the first region, wherein an output of the laser light source is 0.1 to 40 J/cm2;
a solution injecting unit which injects a mixture solution including a copper precursor and a platinum precursor into the second region;
a display unit which measures and displays, in real time, a copper precursor content and a platinum precursor content in the second region, a type of the reaction solution, applied voltage, and the output of the emitted laser source;
a particle diameter measuring device which measures a particle diameter of a metal nanoparticle manufactured in the second region;
a reference electrode and a counter electrode which are supported in the reaction solution in the second region;
a power source unit which applies voltage to the electrodes; and
a pump which circulates a solution discharged from the second region to the first region,
wherein a part of an upper surface in the first region of the reaction chamber is made of a glass material, a metal ingot holder is accommodated in the reaction chamber, and a metal ingot capsule is accommodated on the metal ingot holder.

4. The apparatus according to claim 3 , wherein the metal ingot capsule has a capsule shape having a hermetic structure in which the metal ingot is impregnated in the reaction solution.

Assignees

• Korea Inst Energy Res

Inventors

• Park Gu-Gon
• Hwang Sun-Mi
• Yim Sung-Dae
• Kim Chang-Soo
• Lee Won-Yong
• Yang Tae-Hyun
• Park Seok-Hee
• Kim Minjin
• Sohn Young-Jun
• Bae Byungchan
• Kim Seung-Gon
• Shin Dongwon

Classifications

• B01J35/45

  Nanoparticles · CPC title

• B01J23/44

  Palladium · CPC title

• H01M4/8657 Primary

  layered · CPC title

• H01M4/925

  supported on carriers, e.g. powder carriers · CPC title

• H01M4/921

  Alloys or mixtures with metallic elements · CPC title