公开(公告)号：US20240253026A1

公开(公告)日：2024-08-01

申请号：US18412426

申请日：2024-01-12

Applicant: KOREA INSTITUTE OF ENERGY RESEARCH

Inventor： Gu-Gon PARK ,  Eunjik LEE ,  Sung-Dae YIM ,  Seok-Hee PARK ,  Minjin KIM ,  Young-Jun SOHN ,  Byungchan BAE ,  Seung-Gon KIM ,  Dongwon SHIN ,  Seung Wook CHOI ,  Hwangyeong OH ,  Seung Hee WOO ,  So Jeong LEE ,  Hyejin LEE ,  Yoon Young CHOI ,  Yun Sik KANG ,  Won-Yong LEE ,  Tae-Hyun YANG

IPC: B01J37/02 ,  B01J35/00 ,  B01J37/08 ,  B01J37/16 ,  B01J37/34

CPC classification number: B01J37/0221 ,  B01J35/19 ,  B01J37/08 ,  B01J37/16 ,  B01J37/343

Abstract: Provided are a core-shell catalyst with improved durability and a manufacturing method thereof including irradiating ultrasonic waves to a solution containing a reducing solvent, a noble metal precursor, a transition metal precursor, and a carbon support to form a cavity due to the irradiation of the ultra-waves and forming transition metal precursor core and noble metal precursor shell particles due to a difference in vapor pressure; and nitriding the transition metal precursor core and noble metal precursor shell particles at a temperature of 450 to 550° C. and a pressure condition of 60 to 100 bar under a gaseous nitrogen source, in which the transition metal may be any one selected from the group consisting of Y, La, Ce, Zn, and Mn or combinations thereof.