Thermal Method for Testing Small Chemisorbents Samples on the Base of Potassium Superoxide
The increase of technogenic and natural accidents,
accompanied by air pollution, for example, by combustion products,
leads to the necessity of respiratory protection. This work is devoted to the development of a calorimetric method
and a device which allows investigating quickly the kinetics of
carbon dioxide sorption by chemisorbents on the base of potassium
superoxide in order to assess the protective properties of respiratory
protective closed circuit apparatus. The features of the traditional approach for determining the
sorption properties in a thin layer of chemisorbent are described, as
well as methods and devices, which can be used for the sorption
kinetics study. The authors developed an approach (as opposed to the traditional
approach) based on the power measurement of internal heat sources
in the chemisorbent layer. The emergence of the heat sources is a
result of exothermic reaction of carbon dioxide sorption. This
approach eliminates the necessity of chemical analysis of samples
and can significantly reduce the time and material expenses during
chemisorbents testing. Error of determining the volume fraction of adsorbed carbon
dioxide by the developed method does not exceed 12%. Taking into
account the efficiency of the method, we consider that it is a good
alternative to traditional methods of chemical analysis under the
assessment of the protection sorbents quality.
 P. C. Wood, T. Wydeven “Improved Oxygen Sources for Breathing
Apparatus: report NASA”, NASA Ames research. Moffett field. Calif., 61
 P. C. Wood, T. Wydeven, “The use of superoxide mixtures as airrevitalization
chemicals in hyperbaric, self contained, closed circuit
breathing apparatus”, NASA Ames research. Moffett field. Calif., 61 p.,
 Lee D. Hansen “Calorimetric Measurement of the Kinetics of Slow
Reactions”. Ind. Eng. Chem. Res, no. 39, pp. 3541-3549, 2000.
 V. Hemminger, G. Khene “Calorimetry. Theory and practice”. Moscow,
Chemistry, 176 p., 1990.
 R. E. Tapscott, L. D. Hansen, E. A. Lewis “Calorimetric Studies of
Stereoselective Vanadyl (IV) Tartrate Reactions”. J. Inorg. Nucl. Chem.,
№. 37, pp. 2517-2519, 1975.
 O. Sohnel, M. Kroupa, G. Frankova´, V. Velich “Calcium Oxalate
Crystallization Kinetics from Calorimetric Measurements”.
Thermochimica Acta, vol.306, Issues 1–2, 17, pp. 7-12, November 1997.
 V. P. Lehto, E. A. Laine “Kinetic Study of Polymorphic Transition of
Anhydrous Caffeine with Microcalorimeter”. Thermochimica Acta, vol.
317, Issue 1, 6, pp. 47-58, July 1998.
 P. V. Balabanov, S. V. Ponomarev “The use of the theory of the twoalpha
method to investigate the thermophysical characteristics of
regenerative products and chemical absorbents”. Measurement
Techniques, vol. 53, no. 11, pp. 1256-1263, February 2011.
 P. V. Balabanov “A thermal method of measuring the chemisorption
characteristics of regenerative products”. Measurement Techniques, vol.
55, no. 5, pp. 589-594, August 2012.
 A. A. Krimshteyn, S. V. Plotnikov, V. I. Konovalov, B. V. Putin
“Simulation of isolating devices chemical oxygen” Journal of Applied
Chemistry, vol. 65, no. 11, pp. 2463-2469, November 1992.