Thermodynamic and kinetic investigation of phase, membrane, reaction-mass transfer non-equilibrium processes and critical states

Main research areas

General, non-equilibrium and chemical thermodynamics. Experimental studies of phase transitions, transmembrane processes, sorption, and thermal effects. Experimental investigation of critical phenomena in multicomponent systems with chemical interactions of substances. Thermodynamic and structural features of multicomponent critical phases in the course of equilibrium and nonequilibrium chemical reaction (critical surfaces and hypersurfaces). Kinetics of chemical reactions in the near-critical region of liquid-phase systems. Coupled reaction - mass transfer processes, kinetics of chemical processes in heterogeneous media. The evolution of thermodynamic properties in the course of coupled processes. Deep eutectic solvents and processes involving them. Thermodynamic properties of natural gas and gas mixtures, including for industrial applications. Development of new promising membrane polymer and composite materials (inclusion of modifiers into the polymer matrix), their structural (SEM, AFM, X-Ray) and thermochemical studies, thermodynamic properties.

The theory of thermodynamic stability, its development and application for the analysis and modeling of chemical and phase processes in equilibrium and non-equilibrium systems. Application of non-equilibrium thermodynamics methods to solve theoretical problems and tasks of chemical technology: stability of multicomponent systems, phase and membrane separation, reaction-mass transfer processes. Analysis of thermodynamic stability of multicomponent systems (spinodal curves, surfaces and hypersurfaces) and features of critical states using methods of non-equilibrium thermodynamics, quantum chemistry, classical and non-empirical molecular dynamics. Application of the artificial neural network method to the problems of thermodynamic analysis of multicomponent systems. Modeling of transmembrane processes based on non-equilibrium thermodynamics approach.

Additional (applied) activity profile: organization of phase and membrane separation processes, including combined processes (reaction distillation and extraction, synthesis in a membrane reactor, behavior of mixtures in the near-critical region). New practically important and promising membrane materials (for pervaporation, gas separation, ultrafiltration). The study of processes related to the production of biofuels.

Selected journals in which the results of the scientific group are published

Grants

Current main projects

• "Deep eutectic solvents in the processes of production and purification of biodiesel", prolongation, Russian Science Foundation, 20-73-10007. Head of the project — M.A. Toikka. 2023–2025.
• "Development of fundamental aspects of energy-efficient technology of ethyl acetate synthesis", Russian Science Foundation, 23-23-00227. Head of the project — M.A. Trofimova. 2023–2024.
• "Heat effects of phase and chemical processes in a multicomponent systems with chemical interaction", Russian Science Foundation, 22-73-00159. Head of the project — A.D. Golikova. 2022–2023.
• "Critical states in multicomponent fluid systems with chemical interaction of components", Russian Science Foundation, 21-13-00038. Head of the project — A.M. Toikka. 2021–2023.
• "Novel membrane materials for bioalcohol concentration, purification and regeneration of industrially significant solvents", Russian Science Foundation, 21-79-03042. Head of the project — A.Y. Pulyalina. 2021–2022.
• "Deep Eutectic Solvents in Extraction Processes: An Experimental Study and Thermodynamic Modeling", Russian Science Foundation, 24-23-00054. Head of the project — A.A. Samarov. 2024–2025.
• "Deep eutectic solvents. A new approach to the separation and purification of substances for introduction into technological schemes of the food and cosmetic industry of the Russian Federation", Grants of President of the Russian Federation for State support of young Russian scientists (candidates of sciences). Head of the project — A.D. Golikova. 2022-2023.
• Grants/subsidies of the Committee on Science and Higher Education of the Government of St. Petersburg for young scientists, young candidates of sciences and grants in the field of scientific and scientific-technical activities.

Selected Main Publications

2024 (beginning)

1. Toikka A.M., Petrov A.V. Alternativeness of ester synthesis reaction mechanism: a case study of propyl acetate. // Mendeleev Commun. 2024. 34(1). P. 134–136. DOI: 10.1016/j.mencom.2024.01.041.
2. Misikov G., Zolotovsky, K., Samarov, A., Prikhodko I., Toikka, M., Toikka, A. Chemical Equilibrium in the System Acetic acid-n-Amyl Alcohol-n-Amyl Acetate-Water at 323.15 K and Atmospheric Pressure: Experimental Data and Equilibrium Constant Estimation. // Journal of Chemical and Engineering Data. 2024. 69(3). P. 1169–1177. DOI: 10.1021/acs.jced.3c00744.
3. Golikova A., Shasherina A., Anufrikov Y., Misikov G., Kuzmenko P., Smirnov A., Toikka M., Toikka A. // Excess Enthalpies Analysis of Biofuel Components: Sunflower Oil–Alcohols. // Int. J. Mol. Sci. 2024, 25(6), 3244; DOI: 10.3390/ijms25063244.
4. Golikova A.D., Anufrikov Y.A., Shasherina A.Y., Misikov G.H., Toikka M.A., Samarov A.A., Toikka A.M. Excess Enthalpies and Heat of Esterification Reaction in Acetic Acid–n-Butanol–n-Butyl Acetate–Water System at 313.15 K. // Russian Journal of General Chemistry, 2024, 94(Suppl 1), P. S177–S183. DOI: 10.1134/S1070363224140184.
5. Golikova A., Smirnov A., Toikka A., Samarov A., Toikka M. New Experimental Results and Comparative Analysis of the Efficiency of Separation of Propyl Propionate and Propyl Formate from Propanol Using Deep Eutectic Solvents Based on Choline Chloride. // Journal of Chemical & Engineering Data. 2024 (ASAP). DOI: 10.1021/acs.jced.3c00782.

2023

1. A. Smirnov, A. Golikova, A. Toikka, A. Samarov, M. Toikka. Study of the Liquid-Liquid Equilibrium and Extraction Properties of Deep Eutectic Solvents Based on Choline Chloride for the Separation of the Ethanol-Ethyl Formate System for Potential Use in Biofuel Production // Industrial and Engineering Chemistry Research. 2023. V. 62(1). P. 586–597. DOI: 10.1021/acs.iecr.2c02911..
2. A. Golikova, A. Shasherina, Y. Anufrikov, G. Misikov, M. Toikka, I. Zvereva, A. Toikka. Excess Enthalpies for Binary Mixtures of the Reactive System Acetic Acid + n-Butanol + n-Butyl Acetate + Water: Brief Data Review and Results at 313.15 K and Atmospheric Pressure // International Journal of Molecular Sciences. 2023. V. 24(6). Article 5137. DOI: 10.3390/ijms24065137 .
3. M. Toikka, A. Smirnov, M. Trofimova, A. Golikova, I. Prikhodko, A. Samarov, A. Toikka. Peculiarities of Chemical Equilibria in Acetic Acid−n‑Butyl Alcohol−n‑Butyl Acetate−Water System at 318.15 K and 101.3 kPa // J. Chem. Eng. Data. 2023. V. 68(5). P. 1145–1153. DOI: 10.1021/acs.jced.3c00009 .
4. A.M. Toikka, G.Kh. Misikov, M.A. Toikka. On the Thermodynamic Stability of Multicomponent Reactive Systems // Russian Journal of Physical Chemistry A. 2023. V. 97 (6). P. 1098–1101. DOI: 10.1134/S0036024423060262.
5. A. Toikka, G. Misikov, M. Toikka. Some Remarks on the Boundary of Thermodynamic Stability // Entropy. 2023. 7. Article 969. DOI: 10.3390/e25070969.
6. A.M. Toikka, A.V. Petrov. Comparative analysis of molecular interactions in quaternary fluid system performed by classical and ab initio molecular dynamics // Mendeleev Commun. 2023. V. 33(3). P. 413-415. DOI: 10.1016/j.mencom.2023.04.036
7. G. Polotskaya, N. Tian, I. Faykov, M. Goikhman, I. Podeshvo, N. Loretsyan, I. Gofman, K. Zolotovsky, A. Pulyalina, Novel Design of Co-Poly(Hydrazide Imide) and Its Complex with Cu(I) for Membrane Separation of Methanol/Dimethyl Carbonate Mixture. // Membranes. 2023. V. 13(2), 160. DOI: 10.3390/membranes13020160
8. A. Pulyalina, V. Rostovtseva, I. Faykov, N. Saprykina, A. Golikova, A. Fedorova, G. Polotskaya, A. Novikov. Impact of Layered Perovskite Oxide La0.85Yb0.15AlO3 on Structure and Transport Properties of Polyetherimide. // Int. J. Mol. Sci. 2023. V. 24(1), 715. DOI:10.3390/ijms24010715.

2022

1. G. Misikov, M. Toikka, A. Samarov, A. Toikka. Phase equilibria liquid-liquid for ternary systems n-amyl alcohol – water – (acetic acid, n-amyl acetate), n-amyl acetate – water – acetic acid at 293.15 K, 303.15 K, 313.15 K and 323.15 K. // Fluid Phase Equilibria, 2022, V. 552, Article 113265. DOI: https://doi.org/10.1016/j.fluid.2021.113265.
2. A. Senina, A. Samarov, M. Toikka, A. Toikka. Chemical equilibria in the quaternary reactive mixtures and liquid phase splitting: a system with n-amyl acetate synthesis reactions at 318.15 K and 101.3 kPa // J. Molecular Liquids, 2022. V. 345. Article 118246. DOI: 10.1016/j.molliq.2021.118246
3. G.K. Misikov, A.V. Petrov, A.M. Toikka. Application of Artificial Neural Networks for the Analysis of Data on Liquid–Liquid Equilibrium in Three-Component Systems // Theoretical Foundations of Chemical Engineering. 2022. 56(2). P. 200–207. DOI: 10.1134/S0040579522020129.
4. A. M. Toikka, B. I. Gorovits, M. A. Toikka. Thermodynamic Analysis of Peculiarities of the State Diagrams of Chemically Reacting Systems in the Vicinity of Critical Points // Russian Journal of Physical Chemistry A. 2022. V. 96. No. 3. P. 478–484. DOI: 10.1134/S0036024422030244.
5. M. Toikka, P. Kuzmenko, A. Samarov, M. Trofimova. Phase behavior of the oleic acid – methanol – methyl oleate – water mixture as a promising model system for biodiesel production: Brief data review and new results at 303.15 K and atmospheric pressure. // Fuel. 2022 V. 319. 123730. DOI: 10.1016/j.fuel.2022.123730.
6. A. Samarov, I. Prikhodko, D. Liubichev, M. Toikka. Liquid−Liquid Equilibrium of Alcohol−Ester Systems with Deep Eutectic Solvents Based on Choline Chloride and Alkanediols (Ethylene Glycol or Propylene Glycol) // Journal of Chemical & Engineering Data. 2022. V. 67 (3). P. 707-716. DOI: 10.1021/acs.jced.1c00913.
7. A. Pulyalina, K. Grekov, Татаурова В., A. Senchukova, A. Novikov, I. Faykov, G. Polotskaya. Effect of ionic liquid on formation of copolyimide ultrafiltration membranes with improved rejection of ­La3+. // Scientific Reports. 2022. V. 12(1). 8200. DOI 10.1038/s41598-022-12377-0
8. A. Pulyalina, N. Tian, A. Senchukova, I. Faykov, M. Ryabikova М., A. Novikov, N. Saprykina, G. Polotskaya. Application of Cyclized Polyacrylonitrile for Ultrafiltration Membrane Fouling Mitigation // Membranes. 2022. V. 12(5), 489. DOI:10.3390/membranes12050489
9. V. Rostovtseva, I. Faykov, A. Pulyalina, A Review of Recent Developments of Pervaporation Membranes for Ethylene Glycol Purification. // Membranes. 2022. V. 12(3), 312. DOI: 10.3390/membranes12030312

2021

1. D. Gromov, A. Toikka. Geometric Analysis of a System with Chemical Interactions // Entropy. 2021. V. 23, 1548. DOI: 10.3390/e23111548.
2. A. V. Petrov and A. M. Toikka. Comparative Atomic-level Analysis of Sorption and Diffusion Properties of Membrane Materials on the Base of Polymer and its Prepolymer // Membranes. 2021. V. 11. Article 925. DOI: 10.3390/membranes11120925.
3. A.M. Toikka, G.K. Misikov, A.V. Petrov. Analysis of Data on Vapor–Liquid Equilibrium in Multicomponent Systems Using Artificial Neural Networks // Theoretical Foundations of Chemical Engineering. 2021. V. 55(3). P. 403–409. DOI: 10.1134/S004057952103026X.
4. M. Farzaneh-Gord, H. R. Rahbari, B. Mohseni-Gharesafa, A. Toikka, I. Zvereva. Accurate determination of natural gas compressibility factor by measuring temperature, pressure and Joule-Thomson coefficient: Artificial neural network approach // Journal of Petroleum Science and Engineering. 2021. V. 202. 108427. DOI: 10.1016/j.petrol.2021.108427.
5. A.M. Toikka, A.Y. Pulyalina, A.V. Petrov. Mobility of small molecules in membrane materials based on copolyimide P84 // Mendeleev Communications. 2021. V. 31(1). P. 79–80. DOI: 10.1016/j.mencom.2021.01.024.
6. V. Rostovtseva, A. Pulyalina, R. Dubovenko, I. Faykov, K. Subbotina, K. Novikov, N. Saprykina, L. Vinogradova, G. Polotskaya. Enhancing pervaporation membrane selectivity by incorporating star macromolecules modified with ionic liquid for intensification of lactic acid dehydration // Polymers. 2021. V. 13(11). 1811. DOI: 10.3390/polym13111811.
7. I.I. Faykov, V.A. Rostovtseva, N.S. Tyan, A.Y. Pulyalina. A Deep Eutectic Solvent as a Modifier of Polyphenylene Oxide Membranes for Acetic Acid Dehydration // Membranes and Membrane Technologies. 2021. V. 3(2). P. 124–130. DOI:10.1134/S2517751621020037.
8. A.A. Samarov, M.A. Toikka, A.M. Toikka. Phase Equilibria in Alcohol–Ester Systems with Deep Eutectic Solvents Based on Choline Chloride at 293.15 and 313.15 K // Theoretical Foundations of Chemical Engineering. 2021. V. 55(2). P. 290–300. DOI: 10.1134/S004057952102010X.
9. A. Smirnov, A. Samarov, M. Toikka. Liquid−Liquid Equilibrium, Solubility, and Critical States in an Acetic Acid−n Butyl Alcohol−n Butyl Acetate−Water System at 328.15 K and 101.3 kPa: Topology of Phase Diagrams and NRTL Modeling. // J. Chem. Eng. Data. 2021. V. 66 (3). P. 1466-1474. DOI: 10.1021/acs.jced.0c01066. Q1
10. M. Trofimova, G. Misikov, A. Samarov, I. Prikhodko, M. Toikka. Solubility in the system acetic acid – n-amyl alcohol – n-amyl acetate – water at 293.15 K, 303.15 K, 313.15 K and 323.15 K and atmospheric pressure. The Journal of Chemical Thermodynamics. 2021. V. 161. 106515. DOI: 10.1016/j.jct.2021.106515.

2020

1. D. Gromov, A. Toikka. Toward Formal Analysis of Thermodynamic Stability: Le Chatelier—Brown Principle // Entropy. 2020. 22. Article 1113. DOI:10.3390/e22101113
2. D. Gromov, A. Toikka. On an alternative formulation of the thermodynamic stability condition // Journal of Mathematical Chemistry. 2020. V. 58(6). P. 1219–1229. DOI: 10.1007/s10910-020-01126-1
3. M. Farzaneh‑Gord, H. R. Rahbari, B. Mohseni‑Gharyehsafa, A. Toikka, I. Zvereva. Machine learning methods for precise calculation of temperature drop during a throttling process // J. Thermal Analysis and Calorimetry. 2020. V. 140(6). P. 2765–2778. DOI: 10.1007/s10973-019-09029-3
4. A.V. Petrov, A.M. Toikka. Charge States of Sorption Centers in Matrimid // Glass Physics and Chemistry. 2020. V. 46(2). P. 186–188. DOI: 10.1134/S1087659620020091
5. M. Trofimova, A. Sadaev, A. Samarov, A. Golikova, N. Tsvetov, M. Toikka, A. Toikka. Liquid-liquid equilibrium of acetic acid – ethanol – ethyl acetate – water quaternary system: Data review and new results at 323.15 K and 333.15 K // Fluid Phase Equilibria. 2020. V. 503. Article 112321. DOI: 10.1016/j.fluid.2019.112321
6. A. Golikova, N. Tsvetov, A. Samarov, M. Toikka, I. Zvereva, M. Trofimova, A. Toikka. Excess enthalpies and heat of esterification reaction in ethanol + acetic acid + ethyl acetate + water system at 313.15 K // J. Thermal Analysis and Calorimetry. 2020. V. 139. P. 1301–1307. DOI:10.1007/s10973-019-08488-yvol(V0)
7. A. Samarov, M. Trofimova, M. Toikka, A. Toikka. Experimental Data on Chemical Equilibrium in the System with Ethyl Formate Synthesis Reaction at 298.15 K // J. Chemical and Engineering Data. 2020. V. 65. Issue 5. P. 2578–2582. DOI: 10.1021/acs.jced.9b01205
8. A. Pulyalina, I. Faykov, V. Nesterova, M. Goikhman, I. Podeshvo, N. Loretsyan, A. Novikov, I. Gofman, A. Toikka, G. Polotskaya. Novel Polyester Amide Membranes Containing Biquinoline Units and Complex with Cu(I): Synthesis, Characterization, and Approbation for n-Heptane Isolation from Organic Mixtures // Polymers. 2020. 12. Article 645. DOI:10.3390/polym12030645
9. N. Tsvetov, A. Sadaeva, M. Toikka, A. Toikka. Excess molar heat capacity for the binary system n-propyl alcohol + water in the temperature range 278.15–358.15 K: new data and application for excess enthalpy calculation. // J. Thermal Analysis and Calorimetry. 2020. V. 142(5).P. 1977–1987. DOI: 10.1007/s10973-020-09605-y
10. A. Pulyalina, V. Rostovtseva, I. Faykov, A. Toikka. Application of Polymer Membranes for a Purification of Fuel Oxygenated Additive. Methanol/Methyl Tert-butyl Ether (MTBE) Separation via Pervaporation: A Comprehensive Review // Polymers. 2020. V. 12. Article 2218. DOI:10.3390/polym12102218
11. A. Pulyalina, V. Rostovtseva, I. Minich, O. Silyukov, M. Toikka, N. Saprykina, G. Polotskaya. Specific Structure and Properties of Composite Membranes Based on the Torlon® (Polyamide-imide)/Layered Perovskite Oxide // Symmetry. 2020. V. 12(7). Article 1142. DOI: 10.3390/sym12071142
12. A. Pulyalina, V. Rostovtseva, D. Rudakova, L. Vinogradova, G. Polotskaya. Strongly Selective Polymer Membranes Modified with Heteroarm Stars for the Ethylene Glycol Dehydration by Pervaporation // Membranes. 2020. V. 10(5). Article 86. DOI: 10.3390/membranes10050086
13. A. Pulyalina, M. Tataurov, I. Faykov, V. Rostovtseva, G. Polotskaya. Polyimide Asymmetric Membrane vs. Dense Film for Purification of MTBE Oxygenate by Pervaporation // Symmetry. 2020. V. 12(3). Article 436. DOI: 10.3390/sym12030436
14. G. Polotskaya, A. Pulyalina, V. Lebedev, G.Török, D. Rudakova, L. Vinogradova. Novel view at hybrid membranes containing star macromolecules using neutron scattering and pervaporation dehydration of acetic acid // Materials & Design. 2020. V. 186. Article 108352. DOI: 10.1016/j.matdes.2019.108352
15. A. Pulyalina, A. Larkina, M. Tataurov, L. Vinogradova, G. Polotskaya. Hybrid macromolecular stars with fullerene(C60) core included in polyphenyleneisophthalamide membranes for n-butanol dehydration // Fullerenes Nanotubes and Carbon Nanostructures. 2020. V. 28(1). P. 54–60. DOI: 10.1080/1536383X.2019.1671366
16. A. A. Samarov, L. M. Shishaeva, A. M. Toikka. Phase Equilibria and Extraction Properties of Deep Eutectic Solvents in Alcohol–Ester Systems // Theoretical Foundations of Chemical Engineering. 2020. V. 54. No. 4. P. 551–559. DOI: 10.1134/S0040579520040259
17. A. Samarov, I. Prikhodko, D. Liubichev, A. Toikka. Liquid-Liquid Equilibrium of Alcohol (Ethanol or n-Propanol)-Ester (Ethyl or n-Propyl Propionate) Systems with a Deep Eutectic Solvent Based on Choline Chloride at 293.15 K // J. Chemical and Engineering Data. 2020. V. 65(11). P. 5545–5552. DOI: 10.1021/acs.jced.0c00659
18. I.V. Prikhod’ko, A.A. Samarov, A.M. Toikka, M. Farzaneh-Gord. Prediction of Sound Speed in Natural-Gas Mixtures Using the CP-PC-SAFT Equation of State // Theoretical Foundations of Chemical Engineering. 2020. V. 54(6). P. 1267–1275. DOI: 10.1134/S004057952006010X.
19. A. Senina, V. Margin, A. Golikova, N. Tsvetov, A. Sadaeva, M. Toikka. Physico-chemical study of systems involving ethanol, promising for use as a biofuel // Fuel. Vol. 284 (2021) 119099.; DOI: 10.1016/j.fuel.2020.119099)
20. M. Toikka, K. Podryadova, A. Kudryashova. Liquid-liquid equilibria, solubility and critical states in the systempropionic acid – 1-propanol –n-propyl propionate – water at 303.15 K // The Journal of Chemical Thermodynamics. Vol. 152 (2021) 106265. DOI: 10.3390/sym12071142.
21. M. Toikka, A. Sadaev, A. Samarov. Liquid-liquid equilibria, solubility and critical states in the system propionic acid – n-butanol – n-butyl propionate – water at 293.15 K and atmospheric pressure // The Journal of Chemical Thermodynamics. 2020. V. 141, 105957. DOI: 10.1016/j.jct.2019.105957.

2019

1. A. Pulyalina, V. Rostovtseva, G. Polotskaya, L. Vinogradova, Z. Zoolshoev, M. Simonova, A. Hairullin, A. Toikka, Z. Pientka. Hybrid macromolecular stars incorporated poly(phenylene oxide) membranes: Organization, physical, and gas separation properties // Polymer. 2019. V. 172. P. 355–364. DOI: 10.1016/j.polymer.2019.04.005.
2. G. Polotskaya, A. Pulyalina, M. Goikhman, I. Podeshvo, I. Gofman, S. Shugurov, V. Rostovtseva, I. Faykov, M. Tataurov, A. Toikka, A. Polotsky A. Asymmetric Membranes Based on Copolyheteroarylenes with Imide, Biquinoline, and Oxazinone Units: Formation and Characterization // Polymers. 2019. V. 11. Article 1542. DOI: 10.3390/polym11101542.
3. A. Samarov, N. Shner, E. Mozheeva, A. Toikka. Liquid-liquid equilibrium of alcohol–ester systems with deep eutectic solvent on the base of choline chloride // The Journal of Chemical Thermodynamics. 2019. V. 131. P. 369–374. Doi: 10.1016/j.jct.2018.11.019.
4. M. Trofimova, A. Sadaev, A. Samarov, M. Toikka, A. Toikka. Solubility, liquid-liquid equilibrium and critical states for the quaternary system formic acid – ethanol – ethyl formate – water at 298.15 K and 308.15 K // Fluid Phase Equilibria. 2019. V. 485. P. 111–119. DOI: 10.1016/j.fluid.2018.12.024.
5. M. Toikka, A. Sadaeva, A. Samarov, A. Toikka. Solubility and critical surface in the system propionic acid – ethanol – ethyl propionate – water at 293.15, 303.15 and 313.15 K // The Journal of Chemical Thermodynamics. 2019. V. 132. P. 113–121. DOI: 0.1016/j.jct.2018.12.026.
6. I.V. Prikhod’ko, A.A. Samarov, A.M. Toikka. On Application of PC–SAFT Model for Estimating the Speed of Sound in Synthetic and Natural Oil-and-Gas Mixtures // Russian Journal of Applied Chemistry. 2019. V. 92. No. 2. P. 262−266. DOI: 10.1134/S1070427219020150.
7. A. M. Toikka, A. A. Samarov, M. Farzaneh-Gord, I. A. Zvereva. On Calculation of Some Properties of Natural Gas Using a Limited Number of Experimental Parameters // Theoretical Foundations of Chemical Engineering. 2019. V. 53. No. 1. P. 21–28. DOI: 0.1134/S0040579519010159.
8. A.V. Petrov, M.A. Smirnov, M.P. Sokolova, A.M. Toikka. Influence of Water Concentration on Its Mobility in Matrimid® // Coatings. 2019. V. 9. Article 466. DOI:10.3390/coatings9080466
9. A.Yu. Pulyalina, M.N. Putintseva, G.A. Polotskaya, V.A. Rostovtseva, A.M. Toikka. Pervaporation Purification of Oxygenate from an Ethyl tert-Butyl Ether/Ethanol Azeotropic Mixture // Membranes and Membrane Technologies. 2019. V. 1. No. 2. P. 99–106. DOI: 10.1134/S2517751619020082.
10. A. Samarov, I. Prikhodko, N. Shner, G. Sadowski, C. Held, A. Toikka. Liquid−Liquid Equilibria for Separation of Alcohols from Esters Using Deep Eutectic Solvents Based on Choline Chloride: Experimental Study and Thermodynamic Modeling // J. Chemical and Engineering Data. 2019. V. 64. Issue 12. P. 6049–6059. DOI: 10.1021/acs.jced.9b00884.
11. A. Smirnov, A. Sadaeva, K. Podryadova, M. Toikka. Quaternary liquid-liquid equilibrium, solubility and critical states: Acetic acid - n-butanol - n-butyl acetate - water at 318.15 K and atmospheric pressure // Fluid Phase Equilibria. 2019. V. 493. P. 102–108. DOI: 10.1016/j.fluid.2019.04.020.