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.
https://hal-cea.archives-ouvertes.fr/cea-02339846
Contributor : Bibliothèque Cadarache <>
Submitted on : Tuesday, November 5, 2019 - 9:25:08 AM Last modification on : Wednesday, November 4, 2020 - 1:56:02 PM
B. Simon, C. Bouyer, S. de Sio, C. Berthon, N. Boubals, et al.. Characterization of palladium species after γ-irradiation of a TBP–alkane–Pd(NO3)2 system. RSC Advances, Royal Society of Chemistry, 2018, 8, pp.21513-21527. ⟨10.1039/c8ra02695e⟩. ⟨cea-02339846⟩