Sustainable Production of Green Feed from Carbon Dioxide and Hydrogen
Abstract
Carbon dioxide hydrogenation to form hydrocarbons was conducted on two iron-based catalysts, prepared according to procedures described in the literature, and on a new iron spinel catalyst. The CO2 conversion measured in a packed-bed reactor was limited to about 60 % because of excessive amounts of water produced in this process. Switching to a system of three packed-bed reactors in series with interim removal of water and condensed hydrocarbons increased CO2 conversion to as much as 89 %. The pure spinel catalyst displayed a significantly higher activity and selectivity than those of the other iron catalysts. This process produces a product called green feed, which is similar in composition to the product of a high-temperature, iron-based Fischer-Tropsch process from syngas. The green feed can be readily converted into renewable fuels by well-established technologies.
- Publication:
-
ChemSusChem
- Pub Date:
- March 2014
- DOI:
- 10.1002/cssc.201301181
- Bibcode:
- 2014ChSCh...7..785L