Thermal behavior of iron arsenides under non-oxidizing conditions
Fe2As has been studied in situ by synchrotron powder X-ray diffraction (PXRD) over the range of temperatures 25–850 °C and under a neutral atmosphere to understand its thermal behavior, which is potentially important for gold extraction. For the first time, incongruent high-temperature reactions of...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Online Access: | https://hdl.handle.net/10356/145599 |
| _version_ | 1811678481181835264 |
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| author | Seitkan, Ainur Lampronti, Giulio I. Widmer, Remo N. Casati, Nicola P. M. Redfern, Simon Anthony Turner |
| author2 | Asian School of the Environment |
| author_facet | Asian School of the Environment Seitkan, Ainur Lampronti, Giulio I. Widmer, Remo N. Casati, Nicola P. M. Redfern, Simon Anthony Turner |
| author_sort | Seitkan, Ainur |
| collection | NTU |
| description | Fe2As has been studied in situ by synchrotron powder X-ray diffraction (PXRD) over the range of temperatures 25–850 °C and under a neutral atmosphere to understand its thermal behavior, which is potentially important for gold extraction. For the first time, incongruent high-temperature reactions of Fe2As are observed as it breaks down and the existence of a previously undiscovered high-temperature FeAs phase with an NiAs-type structure has been determined experimentally. No evidence has been found for the existence of the high-temperature Fe3As2 phase. Hence, the previously published phase diagram for the Fe–As system has to be modified accordingly. |
| first_indexed | 2024-10-01T02:53:57Z |
| format | Journal Article |
| id | ntu-10356/145599 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:53:57Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1455992023-02-28T16:39:46Z Thermal behavior of iron arsenides under non-oxidizing conditions Seitkan, Ainur Lampronti, Giulio I. Widmer, Remo N. Casati, Nicola P. M. Redfern, Simon Anthony Turner Asian School of the Environment Science::Geology Iron Crystal Structure Fe2As has been studied in situ by synchrotron powder X-ray diffraction (PXRD) over the range of temperatures 25–850 °C and under a neutral atmosphere to understand its thermal behavior, which is potentially important for gold extraction. For the first time, incongruent high-temperature reactions of Fe2As are observed as it breaks down and the existence of a previously undiscovered high-temperature FeAs phase with an NiAs-type structure has been determined experimentally. No evidence has been found for the existence of the high-temperature Fe3As2 phase. Hence, the previously published phase diagram for the Fe–As system has to be modified accordingly. Published version 2020-12-30T02:18:21Z 2020-12-30T02:18:21Z 2020 Journal Article Seitkan, A., Lampronti, G. I., Widmer, R. N., Casati, N. P. M., & Redfern, S. A. T. (2020). Thermal behavior of iron arsenides under non-oxidizing conditions. ACS Omega, 5(12), 6423-6428. doi:10.1021/acsomega.9b03928 2470-1343 https://hdl.handle.net/10356/145599 10.1021/acsomega.9b03928 32258877 12 5 6423 6428 en ACS Omega © 2020 American Chemical Society. This is an open access article published under a Creative Commons Attribution (CC-BY)License, which permits unrestricted use, distribution and reproduction in any medium,provided the author and source are cited. application/pdf |
| spellingShingle | Science::Geology Iron Crystal Structure Seitkan, Ainur Lampronti, Giulio I. Widmer, Remo N. Casati, Nicola P. M. Redfern, Simon Anthony Turner Thermal behavior of iron arsenides under non-oxidizing conditions |
| title | Thermal behavior of iron arsenides under non-oxidizing conditions |
| title_full | Thermal behavior of iron arsenides under non-oxidizing conditions |
| title_fullStr | Thermal behavior of iron arsenides under non-oxidizing conditions |
| title_full_unstemmed | Thermal behavior of iron arsenides under non-oxidizing conditions |
| title_short | Thermal behavior of iron arsenides under non-oxidizing conditions |
| title_sort | thermal behavior of iron arsenides under non oxidizing conditions |
| topic | Science::Geology Iron Crystal Structure |
| url | https://hdl.handle.net/10356/145599 |
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