Back to results
US 11,697,109 B2Granted
Catalyst particles for treating vehicle exhaust gas, preparation method therefor, and method for treating vehicle exhaust gas by using same
AssigneeLG Hausys, Ltd.
InventorsKyeong-Woo Choi, Dong-Il Lee, Won-Ji Hyun, Jong-Sik Choi
Life of this patent
Estimating the term…
Abstract
Provided are catalyst particles for treating vehicle exhaust gas, containing semiconductor nanoparticles supported by noble metals.
Claims12
A catalyst particle for treating vehicle exhaust gas, wherein the catalyst particle includes a semiconductor nanoparticle, and a noble metal supported on the semiconductor nanoparticle,
- wherein an average diameter of a particle made of the noble metal dispersed on the semiconductor nanoparticle is in a range of 1 nm to 30 nm, and
- wherein the catalyst particle further includes a porous ceramic carrier.
A method for preparing catalyst particle for treating vehicle exhaust gas, the method including:
- mixing a noble metal precursor with a suspension containing a semiconductor nanoparticle dispersed therein to form a mixture;
- irradiating light to the mixture to produce a semiconductor nanoparticle supporting a noble metal thereon;
- preparing the suspension, wherein the semiconductor nanoparticle in which the noble metal is dispersed and a porous ceramic carrier are dispersed in water;
- drying the suspension to produce a dried product;
- and
- after drying the suspension, firing the dried product under a temperature condition of 300° C. to 700° C.,
- wherein an average diameter of a particle made of the noble metal dispersed on the semiconductor nanoparticle is in a range of 1 nm to 30 nm.
4 more elements
Dependencies are inferred from the claim text.