Combination catalytic process for producing ethanol from synthesis gas
US7718832B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2007 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Feb 10, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A catalytic process selectively produces ethanol by contacting synthesis gas (syngas), composed primarily of hydrogen and carbon monoxide, with three catalysts within a reactor. The first catalyst is a hydrogenation promoter comprising Cu—Zn, Mo or Fe with an optional alkali metal additive and an optional support of aluminum oxide, silica, zeolite or clay. The second catalyst is a homologation promoter comprising one or more of the Group VIII metals in free or combined form with a co-catalyst metals consisting of Y or lanthanide or actinide series metals with optional additives and support. The third catalyst is a hydrogenation promoter. This series of catalysts improves the selectivity and yield for ethanol from syngas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.