Abstract
Quasi-equilibrium thermogravimetry (variant of CRTA) is utilized as a thermoanalytical screening method for volatile compounds, standard Q-derivatograph sample holders (platelike holder, open crucible, crucible with lid, and conical holder) were calibrated against the partial pressures of metal β-diketonate vapor (in sublimation and evaporation processes) in the range 0.0006–0.11 atm. The mathematical relationship between the vapor partial pressure, the holder construction, the vapor molecular mass, and the mutual diffusion coefficient of the gas was derived and considered. It is possible to obtain a roughp-T relationship for volatile compounds by using stabilized temperatures of sublimation (evaporation) processes in four pressure-calibrated sample holders.
Similar content being viewed by others
References
J. Paulik, F. Paulik, Simultaneous thermoanalytical examination by means of the derivatograph. Thermal Analysis. v.XII. Elsevier Sci. Publ. Co. 1981.
V. A. Logvinenko, F. Paulik, J. Paulik, Quasi-equilibrium thermogravimetry in the up-to-date inorganic chemistry. Novosibirsk, Nauka, 1989 (in Russian).
V. A. Bir and V. A. Logvinenko, J. Thermal Anal., 33 (1988) 237.
N. B. Vargaftik, A handbook of thermal properties of gases and liquids. Moskva, 1963 (in Russian).
I. K. Igumenov, Ju. V. Chumachenko, S. V. Zemskov; In: Problems of chemistry and application of beta-diketonates of metals. Nauka, 1982, p. 100 (in Russian).
H.-J. Cotze, K. Bloss and H. Molketin, Z. Phys. Chem. N. F., 73 (1970) 314.
I. K. Igumenov et al., Volatile compounds for chemical vapour deposition. New processes of films deposition and data bases of thermal parameters from Siberia. Novosibirsk.
Author information
Authors and Affiliations
Additional information
Support for this work was provided by the Russian Foundation of Fundamental Research under Grant N 94-03-09913.
Rights and permissions
About this article
Cite this article
Logvinenko, V.A., Gavrilova, G.V., Karpova, I.G. et al. CRTA for the thermoanalytical screening of volatile compounds. Journal of Thermal Analysis 50, 587–592 (1997). https://doi.org/10.1007/BF01979030
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01979030