Super-dry reforming of methane intensifies CO2 utilization via Le Chatelier's principle
Efficient CO transformation from a waste product to a carbon source for chemicals and fuels will require reaction conditions that effect its reduction. We developed a "super-dry" CH reforming reaction for enhanced CO production from CH and CO We used Ni/MgAl O as a CH -reforming catalyst,...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) Jg. 354; H. 6311; S. 449 |
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| Hauptverfasser: | , , , , |
| Format: | Journal Article |
| Sprache: | Englisch |
| Veröffentlicht: |
United States
28.10.2016
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| ISSN: | 1095-9203, 1095-9203 |
| Online-Zugang: | Weitere Angaben |
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| Zusammenfassung: | Efficient CO
transformation from a waste product to a carbon source for chemicals and fuels will require reaction conditions that effect its reduction. We developed a "super-dry" CH
reforming reaction for enhanced CO production from CH
and CO
We used Ni/MgAl
O
as a CH
-reforming catalyst, Fe
O
/MgAl
O
as a solid oxygen carrier, and CaO/Al
O
as a CO
sorbent. The isothermal coupling of these three different processes resulted in higher CO production as compared with that of conventional dry reforming, by avoiding back reactions with water. The reduction of iron oxide was intensified through CH
conversion to syngas over Ni and CO
extraction and storage as CaCO
CO
is then used for iron reoxidation and CO production, exploiting equilibrium shifts effected with inert gas sweeping (Le Chatelier's principle). Super-dry reforming uses up to three CO
molecules per CH
and offers a high CO space-time yield of 7.5 millimole CO per second per kilogram of iron at 1023 kelvin. |
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| Bibliographie: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
| ISSN: | 1095-9203 1095-9203 |
| DOI: | 10.1126/science.aah7161 |