Role of CeO2/ZrO2 mole ratio and nickel loading for steam reforming of n-butanol using Ni–CeO2–ZrO2–SiO2 composite catalysts: A reaction mechanism
Varkolu, Mohan and Maity, S. K. and Shee, D. and et al, . (2021) Role of CeO2/ZrO2 mole ratio and nickel loading for steam reforming of n-butanol using Ni–CeO2–ZrO2–SiO2 composite catalysts: A reaction mechanism. International Journal of Hydrogen Energy, 46 (10). pp. 7320-7335. ISSN 03603199
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This study presents steam reforming of n-butanol to synthesis gas using high surface area mesoporous Ni–CeO2–ZrO2–SiO2 composite catalysts. The reaction proceeds through a combination of dehydrogenation, dehydration, and cracking reactions with propanal, butanal, and C2–C4 hydrocarbons as intermediate compounds. The ceria forms a solid solution with zirconia, promotes dispersion of nickel, and enhances oxygen storage/release capacity. The carbon conversion to synthesis gas (CCSG) and hydrogen yield are thus enhanced with increasing CeO2/ZrO2 mole ratio up to 1:2 and decreased slightly for higher mole ratios. The CCSG and hydrogen yield are also boosted by increasing the amount of nickel in the catalyst up to 20 wt%. 1:2 CeO2/ZrO2 mole ratio and 20 wt% nickel content are thus deliberated as optimum. The optimum catalyst exhibits stable catalytic performance for about 30 h time-on-stream. The study further presents the effect of temperature and steam/carbon mole ratio on n-butanol steam reforming.
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| Item Type: | Article | ||||||
| Uncontrolled Keywords: | Carbon conversions; Catalytic performance; Composite catalysts; Cracking reactions; Effect of temperature; High surface area mesoporous; Intermediate compound; Oxygen storage/release capacities | ||||||
| Subjects: | Chemistry Chemical Engineering Chemical Engineering > Oils, fats, waxes, gases |
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| Divisions: | Department of Chemical Engineering | ||||||
| Depositing User: | . LibTrainee 2021 | ||||||
| Date Deposited: | 21 Jun 2021 11:02 | ||||||
| Last Modified: | 22 Feb 2022 05:49 | ||||||
| URI: | http://raiithold.iith.ac.in/id/eprint/7964 | ||||||
| Publisher URL: | http://doi.org/10.1016/j.ijhydene.2020.11.240 | ||||||
| OA policy: | https://v2.sherpa.ac.uk/id/publication/12573 | ||||||
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