Abstract

The thermal degradation of calcium oxalate monohydrate is studied by using diffuse reflectance Fourier transform infrared spectroscopy combined with quadrupole mass spectrometry (DRIFTS/MS). DRIFTS/MS results are correlated with thermogravimetric analyses to verify the thermal properties of samples studied. Infrared spectral evidence for CaC₂O₄·H₂O dehydration and infrared spectra for three different CaC₂O₄ phases are given. In addition, the significance of a band at 1085 cm⁻¹ assigned to CO₂^2- which appears during the decomposition of CaC₂O₄ to CaCO₃ is discussed.

Quantification of solid-phase chemical reactions using the temperature-dependent terahertz pulsed spectroscopy, sum rule, and Arrhenius theory: thermal decomposition of α-lactose monohydrate

G. A. Komandin, K. I. Zaytsev, I. N. Dolganova, V. S. Nozdrin, S. V. Chuchupal, V. B. Anzin, and I. E. Spektor
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Paul W. Yang and Henry H. Mantsch
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