Catalytic dewaxing processes using alumina free coated catalyst
US5804058A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1996 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Jun 13, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/32
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is disclosed for the catalytic dewaxing of a hydrocarbon oil feed comprising waxy molecules, which process comprises: PA1 contacting a feed under catalytic dewaxing conditions with a catalyst composition comprising a molecular sieve containing crystallites covalently bound alumina moieties in its framework and having pores with a diameter in the range of from 0.35 to 0.80 nm and recovering a product having a reduced pour point, wherein the molecular sieve has been modified to reduce the mole percentage of alumina by coating the surface of the crystallites with a refractory inorganic oxide which is essentially free of alumina.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.