LA/ND-spinel compositions for metals passivation in FCC processes
US5603823A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 12, 1995 |
| Grant date | Feb 18, 1997 |
| Priority date | — |
| Expiry date | May 12, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G11/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Catalytic cracking catalysts and additives which comprise a metals passivation component containing: PA1 15-60 parts by weight MgO, PA1 30-60 parts by weight Al.sub.2 O.sub.3, and PA1 10-30 parts by weight rare earth compound selected from the group consisting of La oxide, Nd oxide, and mixtures thereof, wherein at least a portion of the MgO and Al.sub.2 O.sub.3 are in the form of an Mg--Al oxide spinel, are especially useful for catalytic cracking processes involving hydrocarbon feedstocks containing high metals (e.g. vanadium) content. The La/Nd compound may be one which forms La and/or Nd oxide during the FCC process cracking or regeneration step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.