КІНЕТИКА ДЕГАЗАЦІЇ I ПОГЛИНАННЯ ВОДНЮ ПАЛАДІЄМ У МОЛЕКУЛЯРНОМУ ТА ЕЛЕКТРОЛІЗНОМУ РЕЖИМАХ
DOI:
https://doi.org/10.15407/dopovidi2026.02.046Ключові слова:
водень, паладій, електроліз, енергія активації, абсорбція, газовиділенняАнотація
Experimental investigations of the kinetics of hydrogen saturation and outgassing from palladium have been carried out in conditions of interaction with molecular and electrolytic hydrogen at near room temperature and the pressure range of 1—2 at. Using the gravimetric method, it was established that the rate of hydrogen saturation during electrolysis is more than two orders higher than in the molecular driven regime. With help of massspectrometric method it has been shown that in the course of hydrogen absorption by Pd cathode during electrolysis and subsequent heating process in high vacuum, the ultrapure hydrogen (higher than 99.999 vol. %) is generated. Based on the measured temperature dependence of hydrogen evolution, the activation energy of hydrogen outgassing from the Pdcathode after onehour exposure to electrolysis ion current ≈8 A was calculated to be E ≈ 23 kJ/mol or ≈12 kJ/mol, in dependence on the temperature range (20—100 °C or 300—650 °C). The average value of activation energy for the whole temperature range of the performed measurements was estimated as ≈22.4 kJ/mol. Therefore, hydrogen outgassing from PdHx system could be multistage process with everchanging activation energy on time. The physicalchemical mechanisms and the influence of β ↔ α transition in the PdHx system are further discussed and analyzed to explain such hydrogen behavior during the outgassing process.
Завантаження
Посилання
Alefeld, G. & Völkl, J. (Eds.). (1978). Hydrogen in Metals. Vol. 1, 2. Berlin, Heidelberg, New York: Springer.
Glazunov, G. P., Bondarenko, M. M. & Konotopskiy, O. L. (2025). Hydrogen release from Pd electrodes after ion current impact during electrolysis process. Problems of Atomic Science and Technology. Series: Plasma Physics, No. 1(155), рp. 89-92. https://doi.org/10.46813/2025-155-089
Glazunov, G. P., Konotopskiy, O. L., Garkusha, I. E. & Elisieiev, D. V. (2024). Mass-spectrometric studies of hydrogen generation under electrolysis process with the using tube catalytic electrodes. Problems of Atomic Science and Technology. Series: Physics of radiation damage and radiation materials science, No. 4(152), рp. 148-151. https://doi.org/10.46813/2024-152-148
Glazunov, G. P., Bondarenko, M. M. & Konotopskiy, O. L. (2025). On the possible method of ultra-pure hydrogen generating. Problems of Atomic Science and Technology. Series: Physics of Radiation Effect and Radiation Materials Science, No. 5(159), рp. 140-145. https://doi.org/10.46813/2025-159-140
Adams, B. D. & Chen, A. (2011). The role of palladium in a hydrogen economy. Materials today, 14, No. 6, pp. 282-289. https://doi.org/10.1016/S1369-7021(11)70143-2
Glazunov, H. P., Andreiev, A. A., Baron, D. I., Volkov, Ye. D., Kytaievskyi, K. M., Konotopskyi, A. L., Lapshyn, V. I., Nekliudov, I. M. & Patokin, A. P. (2004). Hydrogen permeability and erosion of W-Pd bimetal system. Fizyko-khimichna mekhanika materialiv, No. 6, pp. 19-27 (in Ukrainian).
Glazunov, G. P., Andreev, A. A., Baron, D. I., Causey, R. A., Hassanein, A., Kitayevskiy, K. M., Konotopskiy, A. L., Lapshin, V. I., Neklyudov, I. M., Patokin, A. P., Surkov, A. E. & Volkov, E. D. (2006). Hydrogen permeability and erosion behavior of the W-Pd bimetallic systems. Fusion Eng. Des., 81, iss. 1-7, pp. 375-380. https://doi.org/10.1016/j.fusengdes.2005.08.034
Glazunov, G. P., Andreev, A. A., Baron, D. I., Volkov, E. D., Hassanein, A., Kitaevskiy, K. M., Konotopskiy, A. L., Lapshin, V. I., Neklyudov, I. M. & Patokin, A. P. (2005). Hydrogen saturation influence on erosion behavior of thin W-films under steady state nitrogen plasma impact. Problems of Atomic Scince and Technology. Series: Plasma Physics, No. 2(11), pp. 107-109.
Glazunov, G. P., Andreev, A. A., Baron, D. I., Volkov, E. D., Causey, R. A., Hassanein, A., Kitayevskiy, K. M., Konotopskiy, A. L., Lapshin, V. I., Neklyudov, I. M. & Patokin, A. P. (2005). Kinetics of hydrogen permeation through W-Pd bimetallic systems. Problems of Atomic Science and Technology. Series: Plasma Physics, No. 2(11), pp. 82-84.
Federici, G., Skinner, C. H., Brooks, J. N., Coad, J. P., Grisolia, C., Haasz, A., Hassanein, A., Philipps, V., Pitcher, C. S. & Roth., J. (2001). Plasma-material interactions in current tokamaks and their implications for next step fusion reactors. Nuclear Fusion, 41, No. 12, pp. 1967-2137. https://doi.org/10.1088/0029-5515/41/12/218
Somenkov, V. A. & Shylshtein, S. Sh. (1978). Phase transitions of hydrogen in metals. Moscow: IAE (in Russian).
Glazunov, G. P. & Yuferov, V. B. (1980). On the use of palladium membranes in the thermonuclear devices. Problems of Atomic Science and Technology. Series: Common and Nuclear Physics, No. 4(14), рp. 91-95 (in Russian).
Glazunov, G. P., Volkov, E. D. & Hassanein, A. (2002). Bimetallic diffusion membranes: Possible use for active hydrogen recycling control. In: Hassanein, A. (Ed.). Hydrogen and helium recycling at plasma facing materials. NATO Science Series II, vol. 54 (pp. 163-176). Dordrecht: Springer. https://doi.org/10.1007/978-94-010-0444-2_17
Grdeń, M., Czerwiński, A., Golimowski, J., Bulska, E., Krasnodębska-Ostręga, B., Marassi, R. & Zamponi, S. (1999). Hydrogen electrosorption in Ni—Pd alloys. J. Electroanal. Chem., 460, Iss. 1-2, pp. 30-37. https://doi.org/10.1016/S0022-0728(98)00330-1
##submission.downloads##
Опубліковано
Як цитувати
Номер
Розділ
Ліцензія
Авторське право (c) 2026 Reports of the National Academy of Sciences of Ukraine
Ця робота ліцензується відповідно до Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
