Abstract
Processes and thermodynamic parameters of dehydration of transition metal (Ni, Co, and Fe) sulfate heptahydrate crystals grown in aqueous solutions have been investigated by optical thermomicroscopy, X-ray analysis, and differential scanning calorimetry. Values of temperature and specific heat of the first stage of dehydration have been determined, as well as the conditions under which the process was reversible. The morphology of the common topochemical reaction, as well as the mechanism of this reaction, has been characterized. The dehydration process has been shown to depend on multiple physical parameters and to consist in the growth of non-oriented crystals of the new phase with concomitant exudation of the water of crystallization.
Similar content being viewed by others
References
D. M. Reilly, D. T. Moriarty, and J. A. Maynard, Proc. SPIE, No. 5611, 244 (2004).
D. Caputo, G. Cesare, F. Irrera, and F. Palma, IEEE Trans. Electron Devices 43 (9), 1351 (2004).
W. E. Garner, in Chemistry of the Solid State, Ed. by W. E. Garner (Butterworth, London, 1955; IIL, Moscow, 1961), p. 292.
L. V. Soboleva and L. F. Kirpichnikova, Crystallogr. Rep. 46 (2), 306 (2001).
S. Sarig, Thermochim. Acta 7, 297 (1973).
D. Nicholls, Comprehensive Inorganic Chemistry (Pergamon, Oxford, 1973).
G. Rabbering, J. Wanrooy, and A. Schuijff, Thermochim. Acta 12, 57 (1975).
M. Friesen, H. M. Burt, and A. G. Mitchell, Thermochim. Acta 41, 167 (1980).
R. Wu, M. Oliazaden, and A. Alfantazi, Appl. Electrochem. 33, 1043 (2003).
S. Genbo, H. Youping, L. Zhengdong, and J. Rihong, J. Cryst. Growth 213, 99 (2000).
N. Z. Lyakhov, Izv. Sib. Otd. Akad. Nauk SSSR, Ser. Khim. 9 (4), 5 (1980).
A. A. Sidel’nikov, A. P. Chupakhin, N. Z. Lyakhov, and V. V. Boldyrev, Dokl. Akad. Nauk. SSSR 258 (1), 158 (1981).
A. P. Chupakhin, A. A. Sidel’nikov, V. V. Boldyrev, et al., Izv. Sib. Otd. Akad. Nauk SSSR, Ser. Khim. 12 (5), 3 (1981).
A. P. Chupakhin, A. A. Sidel’nikov, and V. V. Boldyrev, Izv. Sib. Otd. Akad. Nauk SSSR, Ser. Khim. 12 (5), 12 (1981).
N. N. Petropavlov, in Extended Abstr. 6th Int. Conf. on Crystal Growth (Moscow, 1980), Vol. 4, pp. 401–403 [in Russian].
N. N. Petropavlov, Zh. Fiz. Khim. 69 (1), 52 (1995).
N. N. Petropavlov, J. Crystal Growth 52, 889 (1981).
N. N. Petropavlov, I. G. Tsygankova, and L. A. Teslenko, Kristallografiya 33 (6), 1433 (1988).
Thermal Analysis. A Collection of Articles Reprinted from Perkin-Elmer,'s Intstrument News (Order No. MA-8a. 1975).
ASTM Diffraction Data Card.
A. I. Kitaigorodskii, Molecular Crystals (Nauka, Moscow, 1971) [in Russian].
V. N. Turlakov, L. I. D’yakonov, and A. I. Sheinkman, Zh. Prikl. Khim. 54 (3), 530 (1981).
B. H. O’Connor and D. H. Dale, Acta Cryst. 21, 705 (1966).
A. Zalkin, H. Ruben, and D. H. Templeton, Acta Cryst. 15, 1219 (1962).
W. H. Baur, Acta Cryst. 17, 1167 (1964).
S. Aslanian and Ch. Balarew, Kristall und Technik 12 (5), 435 (1977).
W. Mac-Crown, in Physics and Chemistry of the Organic Solid State, Ed. by D. Fox (Interscience Publ. New York, 1963; Mir, Moscow, 1968), p. 435.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © N.N. Petropavlov, G.M. Chalaya, I.G. Cygankova, A.L. Ilinskiy, E.L. Gagarinskiy, E.E. Fesenko, Jr., 2017, published in Biofizika, 2017, Vol. 62, No. 2, pp. 221–226.
Rights and permissions
About this article
Cite this article
Petropavlov, N.N., Chalaya, G.M., Cygankova, I.G. et al. Morphology and dehydration mechanism of transition metal sulfate heptahydrates. BIOPHYSICS 62, 158–163 (2017). https://doi.org/10.1134/S000635091702018X
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S000635091702018X