Journal
FUEL
Volume 327, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2022.125115
Keywords
Guaiacol; Cyclohexanol; Ni-Fe alloy nanocatalysts; Basic site; Synergistic effect
Categories
Funding
- NSFC [22078277, 21908185]
- Project of Hunan Provincial Natural Science Foundation of China [2021JJ30658, 2020JJ5532, 2021JJ30663]
- GuangDong Basic and Applied Basic Research Foundation [2021A1515110789]
- Environment-friendly Chemical Process Integration Technology Hunan Province Key laboratory
- Collaborative Innovation Center of New Chemical Technologies for Environmental Benignity and Efficient Resource Utilization
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The production of cyclohexanol from non-fossil biomass using Ni-Fe alloy nanocatalysts is a green and sustainable method. The introduction of Fe and Mg species in the catalyst enhances electron transfer and increases the number of basic sites. Optimizing different catalytic sites improves the yield of cyclohexanol.
The production of cyclohexanol from non-fossil biomass is green and sustainable. Here, a series of highly dispersed Ni-Fe alloy nanocatalysts (Ni-Fe/MgAlOx) were prepared for guaiacol hydrodeoxygenation to cyclohexanol. The results show that the doped Fe led to electron-rich Ni and the introduced Mg species of the support increased the basic sites. The kinetic studies indicate that guaiacol conversion to cyclohexanol included the aromatic ring hydrogenation and the demethoxylation steps. And the Ni-Fe/MgAlOx-1 with the sites of Ni-Fe alloy could significantly reduce the E-a of aromatic ring hydrogenation. Meanwhile, the Ni-Fe/MgAlOx-1 with Mg-doped support exhibited much lower E-a of demethoxylation. Thus, the synergistic effects between Ni-Fe alloy and basic sites brought about high performance to cyclohexanol. Hence the Ni-Fe/MgAlOx-1 gave the highest cyclohexanol yield of 92.1%. The strategy of optimization different catalytic sites for the corresponding reaction step can provide a particular view for designing efficient catalysts in multiple-step hydrogenation/hydrodeoxygenation reactions.
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