NOx reduction composition for use in FCC processes
US6800586B2 · kind B2 · utility
1Cited by
31References
16Claims
0Family size
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Key dates
| Filing date | Nov 23, 2001 |
| Grant date | Oct 5, 2004 |
| Priority date | — |
| Expiry date | Feb 4, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/515
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composition for controlling NOx emissions during FCC processes comprises (i) an acidic oxide support, (ii) cerium oxide, (iii) a lanthanide oxide other than ceria such as praseodymium oxide, and (iv), optionally, an oxide of a metal from Groups Ib and IIb such as copper, silver and zinc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.