Process for producing a catalyst by depositing molybdenum removed from a waste catalyst
US4350609A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1981 |
| Grant date | Sep 21, 1982 |
| Priority date | — |
| Expiry date | Feb 26, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J23/28
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention relates to a method for selectively removing molybdenum values from a spent catalyst and producing a fresh molybdenum-containing catalyst. Such a method preferably contacts anhydrous gaseous hydrogen chloride at an elevated temperature with the metal containing catalyst which is substantially free of carbonaceous material to selectively remove molybdenum therefrom, and producing a fresh molybdenum-containing catalyst by depositing molybdenum from the vapor phase onto a fresh support in the presence of air. At least 50 weight percent and generally as much as 95 weight percent of the molybdenum is removed while other metals such as iron, titanium, cobalt and nickel along with the supporting alumina or silica are not affected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.