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  Synthesis and characterization of a new modification of PtAl

Weidenthaler, C., Brijoux, W., Ould-Ely, T., Spliethoff, B., & Bönnemann, H. (2003). Synthesis and characterization of a new modification of PtAl. Applied Organometallic Chemistry, 17(9), 701-705. doi:10.1002/aoc.487.

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 Creators:
Weidenthaler, Claudia1, Author           
Brijoux, Werner2, Author           
Ould-Ely, Teyeb2, Author           
Spliethoff, Bernd3, Author           
Bönnemann, Helmut2, Author           
Affiliations:
1Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              
2Research Group Bönnemann, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445600              
3Service Department Tesche (EM), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445631              

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Free keywords: Pt-Al phase; synthesis; X-ray
 Abstract: A new PtAl phase, which is stable at room temperature under oxidizing conditions, has been synthesized at 200 °C and 5 MPa. X‐ray studies reveal it to be different from the known polymorphs of PtAl, which crystallize in the FeSi and CsCl structure types. The crystal structure of the new PtAl modification is found to be isotypical with the low‐temperature modification of PdAl. In situ high‐temperature X‐ray diffraction experiments in air were performed to study the thermal behavior of the new PtAl alloy. In the temperature range between 400 and 700 °C, Pt5Al3 forms as an intermediate phase. At higher temperature the alloy decomposes, resulting in the formation of platinum and Al2O3. The thermodynamic instability at high temperatures explains why this new modification has not been observed using contemporary metallurgic processes.

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Language(s): eng - English
 Dates: 2003-01-082003-07-312003-09-01
 Publication Status: Published in print
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/aoc.487
 Degree: -

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Title: Applied Organometallic Chemistry
  Abbreviation : Appl. Organomet. Chem.
Source Genre: Journal
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Publ. Info: Harlow, Essex : Longman Group UK, Ltd.
Pages: - Volume / Issue: 17 (9) Sequence Number: - Start / End Page: 701 - 705 Identifier: ISSN: 0268-2605
CoNE: https://pure.mpg.de/cone/journals/resource/954925501150