公开(公告)号：US11247197B1

公开(公告)日：2022-02-15

申请号：US17137028

申请日：2020-12-29

Applicant: Kunming University of Science and Technology

Inventor： Kai Li ,  Yaxi Zhang ,  Ping Ning ,  Chi Wang ,  Fei Wang ,  Xin Sun ,  Yixing Ma ,  Xin Song ,  Qian Li

IPC: B01D53/86 ,  B01J21/08 ,  B01J29/46 ,  B01J35/02 ,  B01J37/02 ,  B01J37/08

Abstract: The present disclosure relates to the technical field of industrial waste gas purification, in particular to a core-shell structured catalyst, a preparation method and use thereof. The present disclosure provides a core-shell structured catalyst including a metal oxide-molecular sieve as a core and porous silica (SiO2) as a shell, where the metal oxide-molecular sieve includes a molecular sieve and a metal oxide loaded on the molecular sieve, the metal oxide includes an oxide of a first metal and an oxide of a second metal, the first metal is Fe, Cu, Ti, Ni or Mn, and the second metal is Ce or La. The core-shell structured catalyst of the present disclosure can enable effective removal of HCN and AsH3 at the same time with a stable effect, and no secondary pollution.