Purification catalyst, preparation process therefor and gas-purifying apparatus
US7223715B2 · kind B2 · utility
4Cited by
22References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2002 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | May 26, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J35/613
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A purification catalyst and a gas-purifying apparatus are provided which are capable of sufficiently purifying a gas subject to treatment at low temperatures. The purification catalyst includes ZrO2 having a specific surface area of 50 m2/g or less and a monoclinic crystal system. The gas-purifying apparatus includes the aforementioned purification catalyst as a first purification catalyst, and a second purification catalyst containing Mn as a major component and disposed upstream of the first purification catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.