Core-shell structured catalyst, preparation method thereof and method for treating industrial tail gas
US11247197B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2020 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | Dec 29, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/32
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.