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Characterization of palladium species after γ-irradiation of a TBP–alkane–Pd(NO 3 ) 2 system

Abstract : The γ-irradiation of a biphasic system composed of tri-n-butylphosphate in tetrapropylene hydrogen (TPH) in contact with palladium(II) nitrate in nitric acid aqueous solution led to the formation of two precipitates. A thorough characterization of these solids was performed by means of various analytical techniques including X-Ray Diffraction (XRD), Thermal Gravimetric Analysis coupled with a Differential Scanning Calorimeter (TGA-DSC), X-ray Photoelectron Spectroscopy (XPS), InfraRed (IR), RAMAN and Nuclear Magnetic Resonance (NMR) Spectroscopy, and ElectroSpray Ionization Mass Spectrometry (ESI-MS). Investigations showed that the two precipitates exhibit quite similar structures. They are composed at least of two compounds: palladium cyanide and palladium species containing ammonium, phosphorous or carbonyl groups. Several mechanisms are proposed to explain the formation of Pd(CN)2.
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https://hal.univ-lorraine.fr/hal-02182974
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Submitted on : Thursday, August 8, 2019 - 9:00:41 AM
Last modification on : Tuesday, May 17, 2022 - 2:15:20 PM
Long-term archiving on: : Thursday, January 9, 2020 - 3:52:22 AM

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Bénédicte Simon, Christine Bouyer, Stéphanie de Sio, Claude Berthon, Nathalie Boubals, et al.. Characterization of palladium species after γ-irradiation of a TBP–alkane–Pd(NO 3 ) 2 system. RSC Advances, 2018, 8 (38), pp.21513-21527. ⟨10.1039/C8RA02695E⟩. ⟨hal-02182974⟩

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