Catalyst for treating an exhaust gas, an exhaust system and a method
US10882031B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Mar 28, 2018 |
| Grant date | Jan 5, 2021 |
| Priority date | — |
| Expiry date | Apr 3, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2523/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst for treating an exhaust gas comprising SO2, NOx and elemental mercury in the presence of a nitrogenous reductant comprises a composition containing oxides of: (i) Molybdenum (Mo) and optionally Tungsten (W); and (ii) Vanadium (V); and (iii) Titanium (Ti); and (iv) Phosphorus (P), wherein, with respect to the total metal atoms in the composition, the composition comprises: (i) Mo in an amount of less than 2 at. %, and optionally up to 9 at. % W; (ii) from 2.5 to 12 at. % V; (iii) from 85 to 96 at. % Ti, and wherein the composition comprises (iv) P in an atomic ratio to the sum of atoms of Mo, W and V of from 1:2 to 3:2. The values expressed must total 100%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.