| dc.contributor.author |
Gnanamani, Muthu Kumaran |
|
| dc.contributor.author |
Jacobs, Gary |
|
| dc.contributor.author |
Hamdeh, Hussein H. |
|
| dc.contributor.author |
Shafer, Wilson D. |
|
| dc.contributor.author |
Davis, Burtron H. |
|
| dc.date.accessioned |
2012-06-01T15:39:15Z |
|
| dc.date.available |
2012-06-01T15:39:15Z |
|
| dc.date.issued |
2012-05-25 |
|
| dc.identifier.citation |
Gnanamani, Muthu Kumaran; Jacobs, Gary; Hamdeh, Hussein H.; Shafer, Wilson D. & Burtron H., Davis.2012. Fischer–Tropsch synthesis: Mössbauer investigation of iron containing catalysts for hydrogenation of carbon dioxide. Catalysis Today, Available online 25 May 2012 |
en_US |
| dc.identifier.issn |
0920-5861 |
|
| dc.identifier.uri |
http://hdl.handle.net/10057/5110 |
|
| dc.identifier.uri |
http://dx.doi.org/10.1016/j.cattod.2012.02.059 |
|
| dc.description |
Click on the DOI link below to access the article (may not be free). |
en_US |
| dc.description.abstract |
CO2 hydrogenation was investigated with a doubly promoted (Cu, K) silica containing iron catalyst. Hägg carbide (χ-Fe5C2) is the dominant phase obtained under CO activation conditions at 543 K and 0.1 MPa and it was stable under FTS conditions typical for coal or biomass derived syngas using a H2/CO ratio of 1:1 for at least ∼100 h TOS. An Fe-phase change occurs (χ-Fe5C2 → Fe3O4) after switching from H2:CO:N2 (1:1:2) to H2:CO2 (3:1). The distribution of hydrocarbon products changes significantly after switching to H2:CO2 (3:1), but then it slowly transformed to normal FTS products, albeit with over 3 times higher methane selectivity compared to FTS using H2:CO:N2 (1:1:2). A correlation was obtained between the rate of FTS and the % of Fe carbide indicating that iron carbide is the active phase for CO2-based FT synthesis. Irrespective of conditions (i.e., either H2:CO:N2 = 1:1:2 or H2:CO2 = 3:1) and the Fe phase, the methane selectivity appears to primarily depend on the H2/CO ratio. |
en_US |
| dc.language.iso |
en_US |
en_US |
| dc.publisher |
Elsevier |
en_US |
| dc.relation.ispartofseries |
Catalysis Today |
|
| dc.subject |
Fischer–Tropsch synthesis |
en_US |
| dc.subject |
Iron catalysts |
en_US |
| dc.subject |
CO2 hydrogenation |
en_US |
| dc.subject |
Mössbauer |
en_US |
| dc.subject |
Hägg carbide |
en_US |
| dc.title |
Fischer–Tropsch synthesis: Mössbauer investigation of iron containing catalysts for hydrogenation of carbon dioxide |
en_US |
| dc.type |
Article |
en_US |
| dc.description.version |
Peer reviewed |
|
| dc.rights.holder |
Copyright © 2012 Elsevier |
|