Vol. 337 No. 7 (2026)
DOI https://doi.org/10.18799/24131830/2026/7/5076
Thermoelectric effects in higher fatty alcohols
Relevance. Currently, an active search is underway for alternative energy sources. Electrical effects that occur in the field of phase transitions during the directed crystallization of organic dielectrics can be the energy source. Aim. To study the effect of the physico-chemical properties and component composition of higher fatty alcohols on their phase states and the interelectrode potential difference during their crystallization. Methods.The effect of physico-chemical properties of individual even fatty alcohols (FA) C10–22, as well as fractions of fatty alcohols C20+ and C20–22 on thermoelectric effects during their crystallization has been studied by methods of temperature electrometry and differential scanning calorimetry. Results and conclusions. In the field of crystallization and solid-phase transitions of higher fatty alcohols the authors found thermoelectric effects ∆φ reaching 128.5 mV. The crystallization of alcohols is accompanied by the generation and emission of electric charge carriers, which are interpreted as thermoelectric effects. It is shown that the thermoelectric effects in individual fatty alcohols increase with growth in their molecular weight in the range from C10 to C20, followed by a decrease for alcohol C22. The temperature ranges of the existence of electric potentials in alkane alcohols depend on their molar mass, chemical and fractional composition. The temperature ranges of phase transitions and phase states for individual higher fatty alcohols are determined only using differential scanning calorimetry. Phase transitions and phase states of the fractions of higher fatty alcohols are identified according to the data of higher fatty alcohols and temperature electrometry. The melting and crystallization temperatures of higher fatty alcohols were found to correspond according to electrometry and differential scanning calorimetry, as well as their correspondence to literary data. The authors obtained with a high degree of approximation the correlation equations linking the physicochemical properties of individual fatty alcohols with their molar mass and refractive index at 100 ℃. The relationship between thermoelectric effects and phase states of fatty alcohols were established. Electrometric effects in fatty alcohols are inherent only for weakly packed crystal structures – for the hexagonal structure (rot2-state) and for the rot1-state. To assess the stability of thermoelectric potentials in fatty alcohols, the authors proposed the coefficients characterizing their temperature depolarization.
For citation: Agaev S.G., Yakovlev N.S., Zanochuev S.A., Bayda A.A., Tyulkov M.A. Thermoelectric effects in fatty alcohols. Bulletin of the Tomsk Polytechnic University. Geo Assets Engineering, 2026, vol. 337, no. 7, pp. 137-149. https://doi.org/10.18799/24131830/2026/7/5076
Keywords:
higher fatty alcohols, alternative sources of electricity, temperature electrometry, differential scanning calorimetry, gas-liquid chromatography
References:
1. Yingying Zhao, Haibin Li, Jiwei Ren, Yinke Liu, Guangkun Ren, Chen Zhao, Yiying Zhao. Alternative sources for space exploration: 55Fe X-ray-voltaic batteries. Applied Energy, 2025, vol. 380, 125110. DOI: 10.1016/j.apenergy.2023.122103.
2. You V., Kakinaka M. Modern and traditional renewable energy sources and CO2 emissions in emerging countries. Environmental science and pollution research, 2022, vol. 29, no. 12, pp. 17695–17708. DOI: 10.1007/s11356-021-16669-2.
3. Xiangwen Xue, Qi Zhang, Xinyu Cai, Ponkratov V. Multi-criteria decision analysis for evaluating the effectiveness of alternative energy sources in China. Sustainability, 2023, vol. 15, no. 10, pp. 8142. DOI: 10.3390/su15108142.
4. Duc Tran Duy, Vinh Nguyen Duy, Nguyen Tien Tan, Vu Minh Dien, Pham Hoa Binh. A comprehensive review of advances in thermoelectric generators: Novel materials and enhanced applications for sustainable transportationю International Journal of Thermofluids, 2025, vol. 25, 100996. DOI: 10.1016/j.ijft.2024.100996.
5. Deshmukh S.B.M., Krishnamoorthy A., Bhojwani V.K., Pandhare A., Umbarkar A.M., Patil G.P., Jadhav K.B., Todkar A.R. An overview of the applications and performance characteristics of the thermoelectric devices. ARPN J. Eng. Appl. Sci., 2017, no. 12, pp. 2063–2071.
6. Bohang Nan, Guiying Xu, Quanxin Yang, Bin Zhang, Xiaojing Zhou. Innovative design and optimized performance of thermoelectric transistor driven by the Seebeck effect. Energy Conversion and Management, 2023, vol. 283, 116880. DOI: 10.1016/j.enconman.2023.116880.
7. Nurkhaizan Z., Jumril Yu., Mohd A.M., Azrul A.H. Review of thermoelectric generators at low operating temperatures: working principles and materials. Micromachines, 2021, no. 12, pp. 734–759. DOI: 10.3390/mi12070734.
8. Smirnov L. A method for direct conversion of thermal energy into electrical energy and a thermal emission generator for its implementation. Patent RF, no. 2144241, 2000. (In Russ.)
9. Behnia K., Aubin H. Nernst effect in metals and superconductors: a review of concepts and experiments. Reports on progress in physics, 2016, vol. 79, no. 4, pp. 1–40. DOI: 10.1088/0034-4885/79/4/046502.
10. Uchida Ken-ichi, Adachi Hiroto, Kikkawa Takashi, Kirihara Akihiro, Ishida Masahiko, Yorozu Shinichi, Maekawa Sadamichi, Saitoh Eiji. Thermoelectric generation based on spin Seebeck effects. Proceedings of the IEEE, 2016, vol. 104, no. 10, pp. 1946–1973. DOI: 10.1109/JPROC.2016.2535167.
11. Zhou W., Yamamoto K., Miura A., Iguchi R., Miura Y., Uchida K., Sakuraba Y. Seebeck-driven transverse thermoelectric generation. Nature materials, 2021, vol. 20, no. 4. pp. 463–467. DOI: 10.1038/s41563-020-00884-2.
12. Tavares A.D. The Costa Ribeiro effect and allied phenomena. Journal of Molecular Liquids, 1988, vol. 39, pp. 171–194.
13. Kuprin V.A., Tambovcev V.I., Emelyanova N.V. Electrodynamic effect in materials of organic origin and the possibility of its practical use. Bashkir Chemical Journal, 2009, vol. 16, no. 2, pp. 108–113. (In Russ.)
14. Grishin A.P., Orlov F.P., Arsenyev S.A. Interelectrode potential difference in the melt of dielectrics containing surfactants. Colloidal Journal, 1986, no. 2, pp. 348–351. (In Russ.)
15. Orlov F.P., Grishin A.P., Arsenyev S.A. Electrical phenomena in paraffin melts. Izvestiya vuzov. Oil and gas, 1986, no. 6, pp. 51–55. (In Russ.)
16. Agaev S.G., Stolbov A.A. Temperature-electrometric spectroscopy of fatty alcohols. Proceedings of the All-Russian Scientific and Technical Conference. Oil and Gas of Western Siberia. Tyumen, 2009. Vol. 2, pp. 313–316. (In Russ.)
17. Agaev V.G., Stolbov A.A. Thermoelectric effects in higher fatty alcohols. Izvestiya Vuzov. Oil and gas, 2011, no. 2, pp. 70–79. (In Russ.)
18. Agaev S.G., Deryugina O.P. Temperature-dielectric spectroscopy of paraffinic hydrocarbons. Izvestiya vuzov. Oil and gas, 1991, no. 8, pp. 46–49. (In Russ.)
19. Egorov V.M., Marikhin V.A., Myasnikova L.P. Phase transitions in molecular crystals of n-alkane alcohols. Solid State Physics, 2008, vol. 59, no. 1, pp. 123–129. (In Russ.)
20. Kotelnikova E.N., Filatov S.K., Alexandrova E.A. High-temperature crystal chemistry of odd normal paraffins. Proceedings of the IV All-Union Conference on Organic Crystal Chemistry. Moscow, 1984. pp. 119. (In Russ.)
21. Kotelnikova E.N., Filatov S.K., Alexandrova A.A. Thermal deformations and phase transformations of even normal paraffins. Moscow, Moscow State University Publ. House, 1987. 48 p. (In Russ.)
22. Kotelnikova E.N., Alexandrova E.A. Isomorphism in paraffins according to thermorentgenography data. Proceedings of the XI All-Union Conference on Radiography of Mineral Raw Materials. Moscow, 1989. pp. 122. (In Russ.)
23. Kotelnikova E.N., Filatov S.K., Filippova I.V. Crystallochemistry of rotational substances (on the example of paraffins). Notes of the All-Russian Mineralogical Society, 1997, vol. CXXVI, no. 4, pp. 7–29. (In Russ.)
24. Loktev S.M. Higher fatty alcohols: fields of application, production methods, physico-chemical properties. Moscow, Khimiya Publ., 1970. 328 p. (In Russ.)
