Methanation reaction methods utilizing enhanced catalyst formulations and methods of preparing enhanced methanation catalysts
US8754137B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2012 |
| Grant date | Jun 17, 2014 |
| Priority date | — |
| Expiry date | Feb 21, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2523/755
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Enhanced mixed metal catalysts are provided which allow high conversions of carbon dioxide to methane, in some cases up to about 100% conversion. Methods of preparing enhanced mixed metal catalysts comprise a series of steps involving combining nickel and chromium salts with a nucleation promoter in a base environment to form a gel, allowing the gel to digest to form a solid and a mother liquor, isolating the solid, washing the solid, drying the solid, and thermally treating the solid to form a nickel-chromium catalyst. Methanation processes using the catalysts are also provided. The enhanced mixed metal catalysts provide more efficient conversion and lower operating temperatures for carbon dioxide methanation when compared to conventional methanation catalysts. Additionally, these enhanced catalyst formulations allow realization of higher value product from captured carbon dioxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.