Method for treating gas containing organohalogen compounds, and catalyst for decomposing the organohalogen compounds
US5877391A · kind A · utility
28Cited by
6References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 4, 1997 |
| Grant date | Mar 2, 1999 |
| Priority date | — |
| Expiry date | Mar 4, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2255/20776
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for treating a gas flow containing organohalogen compounds including the steps of contacting the gas flow with a catalyst at a temperature below 500.degree. C. in the presence of an effective amount of steam, wherein the catalyst contains titania, tungsten oxide, and silica, the Ti and W are present in the range of 20-95 mol % Ti and 5-80 mol % W based on Ti and W, and the amount of silica is in the range of 0.5-15% by weight silica to 100% by weight titania. Accordingly, the organohalogen compound can be decomposed effectively to carbon monoxide, carbon dioxide, and hydrogen halide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.