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Thermal Behavior of Iron Arsenides Under Non-Oxidizing Conditions.

Accepted version
Peer-reviewed

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Authors

Seitkan, Ainur 
Lampronti, Giulio I 
Widmer, Remo N 
Casati, Nicola PM 
Redfern, Simon AT 

Abstract

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.

Description

Keywords

3402 Inorganic Chemistry, 34 Chemical Sciences

Journal Title

ACS Omega

Conference Name

Journal ISSN

2470-1343
2470-1343

Volume Title

5

Publisher

American Chemical Society (ACS)

Rights

All rights reserved
Sponsorship
British Council (172724105)