Approximate Calculation of the Apparent Reaction Rate of Methane Steam Reforming on an Industrial Nickel Catalyst for Time-Efficient Computations Научная публикация
Журнал |
International Journal of Hydrogen Energy
ISSN: 0360-3199 , E-ISSN: 1879-3487 |
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Вых. Данные | Год: 2025, Том: 177, Номер статьи : 151469, Страниц : DOI: 10.1016/j.ijhydene.2025.151469 | ||
Ключевые слова | Methane steam reforming; Nickel catalyst pellet; Effectiveness factor; Multi-component diffusion; Reaction-diffusion problem; Thiele modulus | ||
Авторы |
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Организации |
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Информация о финансировании (1)
1 | Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) | FWUR-2024-0033 |
Реферат:
A numerical study of steam methane reforming on a porous pellet of the industrial catalyst 8 %Ni/α-Al2O3 was carried out within the parallel pore model and global kinetics (Numaguchi & Kikuchi). The spherically symmetric reaction-diffusion problem was based on the equations of multicomponent diffusion under isothermal conditions inside the pellet. The exact value of the apparent reaction rates at 1, 3, 10 atm pressure was compared with the result of an approximate approach that uses the mixture composition on the catalyst surface, the Thiele modulus and the correction factors for reverse reactions. The mixture composition on the pellet surface and its temperature were varied based on the calculated profiles along the length of a tubular reformer with wall heating (H2O/CH4 = 3 at the inlet, 500–700 ◦C). It is shown that the approximate approach is quite accurate for the apparent rate of methane steam reforming at a pressure of 1 atm, when the effect of the reverse reaction inside the catalyst pellet is insignificant. As the pressure increases to 3–10 atm, the approximate approach increasingly overestimates the actual efficiency of the catalyst. However, as confirmed by comparative modeling of a single-tube reformer the proposed approach efficiently approximates these cases as well.
Библиографическая ссылка:
Shigarov A.B.
Approximate Calculation of the Apparent Reaction Rate of Methane Steam Reforming on an Industrial Nickel Catalyst for Time-Efficient Computations
International Journal of Hydrogen Energy. 2025. V.177. 151469 . DOI: 10.1016/j.ijhydene.2025.151469 WOS Scopus CAPlus OpenAlex
Approximate Calculation of the Apparent Reaction Rate of Methane Steam Reforming on an Industrial Nickel Catalyst for Time-Efficient Computations
International Journal of Hydrogen Energy. 2025. V.177. 151469 . DOI: 10.1016/j.ijhydene.2025.151469 WOS Scopus CAPlus OpenAlex
Даты:
Поступила в редакцию: | 19 июн. 2025 г. |
Принята к публикации: | 8 сент. 2025 г. |
Опубликована в печати: | 13 окт. 2025 г. |
Идентификаторы БД:
Web of science: | WOS:001575024600001 |
Scopus: | 2-s2.0-105015978718 |
Chemical Abstracts: | 2025:2303336 |
OpenAlex: | W4414280911 |
Цитирование в БД:
Пока нет цитирований