Catalyst reprocessing
US7754635B2 · kind B2 · utility
1Cited by
2References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 20, 2007 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Feb 20, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for re-processing of a Fischer-Tropsch catalyst is described comprising the steps of; (i) de-waxing the Fischer-Tropsch catalyst, (ii) subjecting the de-waxed catalyst to hydrometallurgical leaching or extraction to separate catalyst metal or metals from catalyst support material, and (iii) recovering the separated catalyst metal or metals, wherein the de-waxing step is performed using a pressurised near-critical or supercritical fluid under conditions that minimise catalyst metal spinel formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.