Characterization of palladium species after γ-irradiation of a TBP-alkane-Pd(NO 3 ) 2 system.
Bénédicte SimonChristine BouyerStéphanie De SioClaude BerthonNathalie BoubalsFrédéric MiserqueEmmanuelle BrackxNicole RaymondAlexandre ChagnesLaurence BerthonPublished in: RSC advances (2018)
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 .
Keyphrases
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- label free