Hydrogen Production from Biogas: Development of an Efficient Nickel Catalyst by the Exsolution Approach Научная публикация
| Журнал |
Energies
ISSN: 1996-1073 |
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| Вых. Данные | Год: 2023, Том: 16, Номер: 7, Номер статьи : 2993, Страниц : 21 DOI: 10.3390/en16072993 | ||
| Ключевые слова | hydrogen; biogas; methane, steam/CO2 reforming; Ni catalyst; exsolution | ||
| Авторы |
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| Организации |
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Реферат:
Hydrogen production from biogas over alumina-supported Ce1−xNixO2−x catalysts was studied in a temperature range of 600–850 °C with an initial gas composition of CH4/CO2/H2O of 1/0.8/0.4. To achieve a high and stable hydrogen yield, highly dispersed Ni catalysts were prepared through the exsolution approach. A solid solution of Ce1−xNixO2−x was firstly formed on the surface of Al2O3 and then activated in H2/Ar at 800 °C. The genesis and properties of the Ce1−xNixO2−x/Al2O3 catalysts were established using X-ray fluorescence analysis, thermal analysis, N2 adsorption, ex situ and in situ X-ray diffraction, Raman spectroscopy, electron microscopy, EDX analysis, and temperature-programmed hydrogen reduction. The performance of Ce1−xNixO2−x/Al2O3 catalysts in biogas conversion was tuned by regulation of the dispersion and reducibility of the active component through variation of content (5–20 wt.%) and composition (x = 0.2, 0.5, 0.8) of Ce1−xNixO2−x as well as the mode of its loading (co-impregnation (CI), citrate sol–gel method (SG)). For the 20 wt.% Ce1−xNixO2−x/Al2O3 catalyst, the rate of the coke formation decreased by a factor of 10 as x increased from 0.2 to 0.8. The optimal catalyst composition (20 wt.% Ce0.2Ni0.8O1.8/80 wt.% Al2O3) and preparation mode (citrate sol–gel method) were determined. At 850 °C, the 20 wt.% Ce0.2Ni0.8O1.8/Al2O3-SG catalyst provides 100% hydrogen yield at full CH4 conversion and 85% CO2 utilization.
Библиографическая ссылка:
Matus E.
, Kerzhentsev M.
, Ismagilov I.
, Nikitin A.
, Sozinov S.
, Ismagilov Z.
Hydrogen Production from Biogas: Development of an Efficient Nickel Catalyst by the Exsolution Approach
Energies. 2023. V.16. N7. 2993 :1-21. DOI: 10.3390/en16072993 WOS Scopus РИНЦ CAPlus OpenAlex
Hydrogen Production from Biogas: Development of an Efficient Nickel Catalyst by the Exsolution Approach
Energies. 2023. V.16. N7. 2993 :1-21. DOI: 10.3390/en16072993 WOS Scopus РИНЦ CAPlus OpenAlex
Даты:
| Поступила в редакцию: | 27 февр. 2023 г. |
| Принята к публикации: | 23 мар. 2023 г. |
| Опубликована online: | 24 мар. 2023 г. |
| Опубликована в печати: | 1 апр. 2023 г. |
Идентификаторы БД:
| Web of science: | WOS:000969327900001 |
| Scopus: | 2-s2.0-85152772372 |
| РИНЦ: | 54276274 |
| Chemical Abstracts: | 2023:797993 |
| OpenAlex: | W4361010132 |