Effect of thermal annealing on synthetic sodium oxalate crystals

✍ Scribed by J. Garcia-Guinea; V. Correcher; E. Lozano-Diz; M.A. Bañares; P. Lopez-Arce; A.M. García; D.A. Moreno

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 743 KB
• Volume: 91
• Category: Article
• ISSN: 0165-2370
• DOI: 10.1016/j.jaap.2011.03.011

✦ Synopsis

The thermal stability of sodium oxalate (Na 2 C 2 O 4 ) has been analyzed in the range of room temperature and 900 • C by different techniques. All of them, namely (i) environmental scanning electron microscopy (ESEM); (ii) differential-thermal analysis with simultaneous thermo-gravimetry (DTA-TG); (iii) temperature programmed decomposition mass spectrometry (TDP-MS); (iv) X-ray diffraction with heating stage (HS-XRD); (v) temperature programmed Raman spectroscopy (TP-Raman); and (vi) thermoluminescence (TL), provide information about the changes induced by thermal treatments. Thus, dehydration, decomposition, phase transition, decarbonylation, dissociation or lattice stress are some of the processes here described.