Determination of Fe2+/Fe3+ mole ratio based on the change of precursor lattice parameters of wustite based iron catalysts for the ammonia synthesis
In the presented article, oxide forms of iron catalysts with the wustite structure and with a R = Fe2+/Fe3+ molar ratio in the range from 3.78 to 8.16 were investigated. The chemical composition of the tested catalyst precursors was determined by inductively coupled plasma optical emission spectrome...
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| Format: | Article |
| Language: | English |
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Sciendo
2019-09-01
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| Series: | Polish Journal of Chemical Technology |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/pjct-2019-0029 |
| _version_ | 1818666207519178752 |
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| author | Jurkowski Artur Lendzion-Bieluń Zofia |
| author_facet | Jurkowski Artur Lendzion-Bieluń Zofia |
| author_sort | Jurkowski Artur |
| collection | DOAJ |
| description | In the presented article, oxide forms of iron catalysts with the wustite structure and with a R = Fe2+/Fe3+ molar ratio in the range from 3.78 to 8.16 were investigated. The chemical composition of the tested catalyst precursors was determined by inductively coupled plasma optical emission spectrometry (ICP-OES). The X-ray diffraction (XRD) technique was used to determine the phase composition and location of reflections characteristic of the Fe1−xO phase. The molar ratio of iron ions R = Fe2+/Fe3+ was determined by manganometric titration. The distribution of promoters in the structure of iron catalyst precursors with different R = Fe2+/Fe3+ ratio was determined by a selective etching method. The dependence of the lattice parameter ao value in the crystal structure Fe1−xO on the molar ratio R = Fe2+/Fe3+ was determined. On the basis of the determined dependence, R can easily be calculated in catalyst precursors of the wustite structure. |
| first_indexed | 2024-12-17T06:00:52Z |
| format | Article |
| id | doaj.art-0bb096740eb6434b829ce3a2185f23ba |
| institution | Directory Open Access Journal |
| issn | 1899-4741 |
| language | English |
| last_indexed | 2024-12-17T06:00:52Z |
| publishDate | 2019-09-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Polish Journal of Chemical Technology |
| spelling | doaj.art-0bb096740eb6434b829ce3a2185f23ba2022-12-21T22:00:53ZengSciendoPolish Journal of Chemical Technology1899-47412019-09-01213485210.2478/pjct-2019-0029pjct-2019-0029Determination of Fe2+/Fe3+ mole ratio based on the change of precursor lattice parameters of wustite based iron catalysts for the ammonia synthesisJurkowski Artur0Lendzion-Bieluń Zofia1West Pomeranian University of Technology, Faculty of Chemical Technology and Engineering, Institute of Inorganic Chemical Technology and Environment Engineering, Szczecin, ul. Piastów Ave. 42, 71-065Szczecin, PolandWest Pomeranian University of Technology, Faculty of Chemical Technology and Engineering, Institute of Inorganic Chemical Technology and Environment Engineering, Szczecin, ul. Piastów Ave. 42, 71-065Szczecin, PolandIn the presented article, oxide forms of iron catalysts with the wustite structure and with a R = Fe2+/Fe3+ molar ratio in the range from 3.78 to 8.16 were investigated. The chemical composition of the tested catalyst precursors was determined by inductively coupled plasma optical emission spectrometry (ICP-OES). The X-ray diffraction (XRD) technique was used to determine the phase composition and location of reflections characteristic of the Fe1−xO phase. The molar ratio of iron ions R = Fe2+/Fe3+ was determined by manganometric titration. The distribution of promoters in the structure of iron catalyst precursors with different R = Fe2+/Fe3+ ratio was determined by a selective etching method. The dependence of the lattice parameter ao value in the crystal structure Fe1−xO on the molar ratio R = Fe2+/Fe3+ was determined. On the basis of the determined dependence, R can easily be calculated in catalyst precursors of the wustite structure.https://doi.org/10.2478/pjct-2019-0029wustite ammonia catalystxrd techniquemanganometrywustite lattice parameter |
| spellingShingle | Jurkowski Artur Lendzion-Bieluń Zofia Determination of Fe2+/Fe3+ mole ratio based on the change of precursor lattice parameters of wustite based iron catalysts for the ammonia synthesis Polish Journal of Chemical Technology wustite ammonia catalyst xrd technique manganometry wustite lattice parameter |
| title | Determination of Fe2+/Fe3+ mole ratio based on the change of precursor lattice parameters of wustite based iron catalysts for the ammonia synthesis |
| title_full | Determination of Fe2+/Fe3+ mole ratio based on the change of precursor lattice parameters of wustite based iron catalysts for the ammonia synthesis |
| title_fullStr | Determination of Fe2+/Fe3+ mole ratio based on the change of precursor lattice parameters of wustite based iron catalysts for the ammonia synthesis |
| title_full_unstemmed | Determination of Fe2+/Fe3+ mole ratio based on the change of precursor lattice parameters of wustite based iron catalysts for the ammonia synthesis |
| title_short | Determination of Fe2+/Fe3+ mole ratio based on the change of precursor lattice parameters of wustite based iron catalysts for the ammonia synthesis |
| title_sort | determination of fe2 fe3 mole ratio based on the change of precursor lattice parameters of wustite based iron catalysts for the ammonia synthesis |
| topic | wustite ammonia catalyst xrd technique manganometry wustite lattice parameter |
| url | https://doi.org/10.2478/pjct-2019-0029 |
| work_keys_str_mv | AT jurkowskiartur determinationoffe2fe3moleratiobasedonthechangeofprecursorlatticeparametersofwustitebasedironcatalystsfortheammoniasynthesis AT lendzionbielunzofia determinationoffe2fe3moleratiobasedonthechangeofprecursorlatticeparametersofwustitebasedironcatalystsfortheammoniasynthesis |