Hydrogen Production from Biogas: Development of an Efficient Nickel Catalyst by the Exsolution Approach Full article
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Energies
ISSN: 1996-1073 |
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| Output data | Year: 2023, Volume: 16, Number: 7, Article number : 2993, Pages count : 21 DOI: 10.3390/en16072993 | ||
| Tags | hydrogen; biogas; methane, steam/CO2 reforming; Ni catalyst; exsolution | ||
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Abstract:
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.
Cite:
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 AN 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 AN OpenAlex
Dates:
| Submitted: | Feb 27, 2023 |
| Accepted: | Mar 23, 2023 |
| Published online: | Mar 24, 2023 |
| Published print: | Apr 1, 2023 |
Identifiers:
| Web of science: | WOS:000969327900001 |
| Scopus: | 2-s2.0-85152772372 |
| Elibrary: | 54276274 |
| Chemical Abstracts: | 2023:797993 |
| OpenAlex: | W4361010132 |