Method for cleaning gas containing toxic component
US4910001A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1988 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Aug 30, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/46
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for cleaning a gas containing at least one toxic component selected from the group consisting of arsine, phosphine, monosilane, diborane, and hydrogen selenide, which comprises contacting the gas with a cleaning agent containing a molded composition comprising (1) manganese dioxide and (2) cupric oxide, having deposited thereon (3) a silver compound, wherein the weight ratio of cupric oxide to manganese dioxide ranges from 0.2 to 1.2 and the amount of the deposited silver compound ranges from 0.01 to 10.5% by weight based on the cleaning agent. By the cleaning method, the toxic component can be removed from a gas, e.g., air, at high efficiency and at a high rate even in case of sudden leakage of the toxic component out of a bomb.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.