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0222U002123,
0119U101877
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Development of nanostructured catalysts and new technological solutions for the processing of biogas with the production of hydrogen fuel for the methane conversion unit of high-temperature fuel cells
Soloviev Sergii O, Доктор хімічних наук
10-02-2022
L. V. Pisarzhevskii Institute Of Physical Chemistry of The National Academy of Sciences of Ukraine
The composition of Ni-MOx-Al2O3/cordierite (M: K, Na, Mg, Ca, Ce, La) and Ni-BEA catalysts has been optimized. The sample (4,5% Ni-1,4% La2O3-5,5% Al2O3)/cordierite is characterized by the highest indices of activity and resistance to carbonization. The optimal conditions (reagents ratio, space velocity GHSV, temperature) for the stable course of combined biogas reforming processes with the production of hydrogen fuel in the high-performance mode (V0 ≤ 10000 h-1) have been determined. It is shown that the introduction of oxygen additives into the reaction gas mixture increases methane conversion under isothermal conditions, reduces the selectivity with respect to carbon monoxide without changing the selectivity for hydrogen, which allows to adjust the H2/CO ratio in the converted gas. It was found for the first time that by changing the ratio Si/Al=17 → 1700 of Ni-BEA zeolite catalysts and a decrease in the surface concentration of Lewis acid sites, a significant increase in their resistance to carbonization and stability of operation in the process of carbon dioxide conversion of methane to produce hydrogen/synthesis gas is achieved. The influence of the conditions for carrying out the plasma catalytic reforming of biogas in the presence of metal oxide Ni/Al2O3 and zeolite compositions Ni-BEA for the methane conversion module of high-temperature fuel cells on the selectivity of the process has been determined.
Kapran Andrii Yu.
Kyriienko Pavlo I.
Kuryletst Iaroslava P.
Samoilenko Denys E
2022-03-09
Updated: 2025-12-21
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