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Study on sublimation of solid electrolyte (AgI) 0.5‐ (AgPO 3 ) 0.5 with Knudsen effusion mass spectrometry
Author(s) -
Bardi Ugo,
Caporali Stefano,
Tolstogouzov Alexander
Publication year - 2009
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.3865
Subject(s) - chemistry , sublimation (psychology) , ion , analytical chemistry (journal) , mass spectrometry , dimer , mass spectrum , iodine , electrolyte , silver iodide , inorganic chemistry , chromatography , psychology , organic chemistry , electrode , layer (electronics) , psychotherapist , silver halide
Knudsen high‐temperature mass spectrometry was used to study the process of sublimation of a solid electrolyte (AgI) 0.5‐ (AgPO 3 ) 0.5 . Monoatomic iodine ions were found to be the dominant species in the electron ionization mass spectra below 600°C. With an increase in temperature, the relative content of phosphorus oxide ions, mainly [PO] + and [P 4 O 10 ] + , increased. Under further heating, we observed silver iodide and iodine dimer ions together with phosphorus dimer and tetramer ions and clusters [IPO 2 ] + , [IP 2 ] + , [I 3 P] + . Using the experimental logarithmic dependencies of ion signal intensities versus the reciprocal absolute temperature of the effusion cell, the apparent sublimation enthalpies Δ s H of the ions giving the most intense signals were estimated. Copyright © 2008 John Wiley & Sons, Ltd.