Abstract
This paper summarizes data on new approaches to the detection, identification, and quantitative determination of manifestations of spatial inhomogeneities in the chemical composition and structure of mixtures of inorganic solid phases by a standardless differential dissolution (DD) stoichiographic method. We present mathematical modeling results for DD processes in different models for mixtures of solid phases. Based on the modeling results, we formulate rules of stoichiographic calculations for DD results, which are confirmed in identifying manifestations of spatial inhomogeneities in the phase composition of real systems, including fanlike separation of phase mixtures, without their selective separation.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Malakhov, V.V., Vlasov, A.A., Boldyreva, N.N., Dovlitova, L.S., Elagin, A.S., and Parmon, V.N., RF Patent 2 075 338, Byull. Izobret., 1997, no. 8, p. 136.
Malakhov, V.V., Specific features of the dynamic mode of differential dissolution as of a method of phase analysis, J. Anal. Chem., 2009, vol. 64, no. 11, pp. 1097–1107.
Malakhov, V.V. and Vasil’eva, I.G., Stoichiography and phase analysis of multielemental and multiphase substances and materials by chemical methods, Usp. Khim., 2008, vol. 77, no. 4, pp. 370–391.
Vlasov, A.A. and Malakhov, V.V., Mathematical modeling of differential dissolution process, Int. Congr. on Analytical Chemistry, 1997, vol. 1, B–12.
Malakhov, V.V. and Parmon, V.N., Stoichiography and fanlike separation of substances in dynamic masstransfer processes, Dokl. Phys. Chem., 2016, vol. 466, no. 1, pp. 8–11.
Elumeeva, K.V., Ishchenko, A.V., Plyasova, L.M., Molina, I.Yu., Shmakov, A.N., Kalinkin, A.V., and Kuznetsov, V.L., Formation of active-component particles in Fe–Co catalysts for the synthesis of multiwalled carbon nanotubes, Trudy Vtorogo seminara po problemam khimicheskogo osazhdeniya iz gazovoi fazy (Proc. 2nd Seminar on Priority Issues in Chemical Vapor Deposition), Novosibirsk, 2011, p. 47.
Komova, O.V., Mukha, S.A., Netskina, O.V., Odegova, G.V., Pochtar, A.A., Ishchenko, A.V., and Simagina, V.I., A solid glycine-based precursor for the preparation of La2CuO4 by combustion method, Ceram. Int., 2015, vol. 41, no. 1, pp. 1869–1878.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © A.A. Pochtar’, V.V. Malakhov, 2018, published in Neorganicheskie Materialy, 2018, Vol. 54, No. 7, pp. 789–795.
Rights and permissions
About this article
Cite this article
Pochtar’, A.A., Malakhov, V.V. New Stoichiographic Methods for Assessing Spatial Inhomogeneities in the Composition and Structure of Solid Substances and Materials. Inorg Mater 54, 749–755 (2018). https://doi.org/10.1134/S0020168518070130
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0020168518070130