Electrochemical synthesis of Fe-containing composite for decomposition of methane into COx-free hydrogen and nano-carbon
Yergaziyeva G. Makayeva N. Abdisattar A. Yeleuov M. Soloviev S. Anissova M. Taurbekov A. Dossumov K. Akkazin E. Daulbayev C.
December 2022Springer Science and Business Media Deutschland GmbH
Chemical Papers
2022#76Issue 127405 - 7417 pp.
Decomposition of methane is the most efficient method for obtaining pure hydrogen. As catalysts for decomposition of methane, in this work, Ni-foam and Ni–Fe composites obtained by the electrochemical method were used for the first time. Thin iron films were electrochemically grown by potential cycling on the Ni-foam surface. The obtained catalysts were tested for decomposition of methane in the temperature range of 650–850 °C and characterized using XRD, RAMAN, SEM, TGA/DTA, H2-TPR and BET analysis of specific surface area and pore size. The effect of cycles (75, 150, and 250) of iron deposition on Ni-foam on its activity in methane decomposition was studied. It has been determined that the highest catalytic activity is observed for the composite, where the iron deposition cycle on nickel foam is 150. The Ni-Fe150 catalyst showed an initial methane conversion of 91% at a temperature of 850 °C, which increased from 60 min to 96.7% and from 180 min to 98.6%, and was stable for 540 min, while the hydrogen yield was 76%. It has been stated that graphite-like carbon is formed on all catalysts, and the largest amount (32%) is formed on Ni-Fe150. The data obtained in the work indicate that the increase in the activity of Ni-Fe150 in the decomposition of methane is associated with the formation of a Ni–Fe alloy and an increase in the reducibility of iron cations in the composition of the Ni–Fe alloy. In addition, the formation of graphite-like carbon with a high defectiveness on the surface of the Ni-Fe150 catalyst promotes the decomposition of methane in areas not covered with carbon.
Decomposition of methane , Electrochemical synthesis , Fe-containing composite , Graphite-like carbon , Hydrogen , Iron deposition , Ni-foam , Potential cycling
Text of the article Перейти на текст статьи
Institute of Combustion Problems, Bogenbai batyr str.,172, Almaty, 050012, Kazakhstan
Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Al-Farabi Str.,71, Almaty, 050040, Kazakhstan
L.V. Pisarzhevskii Institute of Physical Chemistry, National Academy of Sciences of Ukraine, Science ave., 31, Kiev, 03028, Ukraine
Satbayev University, Satpaev str., 22a, Almaty, 050013, Kazakhstan
National Laboratory Astana, Nazarbayev University, Kabanbay batyr ave., 53, Nur-Sultan, 010000, Kazakhstan
Institute of Nuclear Physics, Ibragimova str., 1, Almaty, 050032, Kazakhstan
Institute of Combustion Problems
Faculty of Chemistry and Chemical Technology
L.V. Pisarzhevskii Institute of Physical Chemistry
Satbayev University
National Laboratory Astana
Institute of Nuclear Physics
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026