<abstract xmlns="http://www.w3.org/1999/xhtml">The iron catalyst precursor promoted with Al2O3, CaO, and Li2O was obtained applying the fusing method. Lithium oxide forms two phases in this iron catalyst: a chemical compound with iron oxide (Li2Fe3O4) and a solid solution with magnetite. The catalyst promoted with lithium oxide was not fully reduced at 773 K, while the catalyst containing potassium was easily reducible at the same conditions. After reduction at 873 K the activity of the catalyst promoted with lithium oxide was 41% higher per surface than the activity of the catalyst promoted with potassium oxide. The concentration of free active sites on the surface of the catalyst containing lithium oxide after full reduction was greater than the concentration of free active sites on the surface of the catalyst promoted with potassium oxide.</abstract>

The iron catalyst precursor promoted with Al2O3, CaO, and Li2O was obtained applying the fusing method. Lithium oxide forms two phases in this iron catalyst: a chemical compound with iron oxide (Li2Fe3O4) and a solid solution with magnetite. The catalyst promoted with lithium oxide was not fully reduced at 773 K, while the catalyst containing potassium was easily reducible at the same conditions. After reduction at 873 K the activity of the catalyst promoted with lithium oxide was 41% higher per surface than the activity of the catalyst promoted with potassium oxide. The concentration of free active sites on the surface of the catalyst containing lithium oxide after full reduction was greater than the concentration of free active sites on the surface of the catalyst promoted with potassium oxide.

The activity of fused-iron catalyst doped with lithium oxide for ammonia synthesis

West Pomeranian University of Technology, Szczecin, Institute of Materials Science and Engineering, Piastów 19, 70-310 Szczecin, Poland

West Pomeranian University of Technology, Szczecin, Institute of Inorganic Chemical Technology and Environmental Engineering, Pułaskiego 10, 70-322 Szczecin, Poland

Polish Journal of Chemical Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The iron catalyst precursor promoted with Al2O3, CaO, and Li2O was obtained applying the fusing method. Lithium oxide forms two phases in this iron catalyst: a...

The activity of fused-iron catalyst doped with lithium oxide for ammonia synthesis

Pubblicato online: 30 giu 2016

Pagine: 78 - 83

DOI: https://doi.org/10.1515/pjct-2016-0032

Parole chiave
iron catalyst, ammonia synthesis, lithium oxide

© 2016 Roman Jedrzejewski et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The activity of fused-iron catalyst doped with lithium oxide for ammonia synthesis

Pubblicato online: 30 giu 2016

Pagine: 78 - 83

DOI: https://doi.org/10.1515/pjct-2016-0032

Parole chiaveiron catalyst, ammonia synthesis, lithium oxide

© 2016 Roman Jedrzejewski et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Parole chiave
iron catalyst, ammonia synthesis, lithium oxide