Process for making 1, 2-propane diol from hydrogenation of glycerol
US8735635B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 23, 2010 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | May 31, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/60
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention is a process for making 1,2-propane diol from glycerol. The process comprises subjecting a glycerol stream to hydrogenation conditions in the presence of a transition metal promoted skeletal copper catalyst to enhance selective production of 1,2-propane diol product. Chromium promoted catalyst is preferred for this invention, and moreover, it is preferred that the skeletal copper catalyst is prepared from copper aluminum alloys that have been subjected to leaching conditions selected to achieve at least 40% leaching of aluminum from the alloy. This process is particularly conducive to conducting the hydrogenation with reactant mixture in the liquid phase. The catalysts used in this invention are particularly suitable for use in a fixed catalyst bed, but can be activated and sized so that the catalyst is also suitable for use in slurry based reactions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.