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Catalysts 2019, 9(3), 212; https://doi.org/10.3390/catal9030212

Selective Conversion of Phenol in a Subcritical Water Medium Using γ-Al2O3 Supported Ni–Co Bimetallic Catalyst

1,†
,
1,3,†
,
1,2
,
1,*
and
1,*
1
Collaborative Innovation Center of Western Typical Industry Environmental Pollution Control, Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
2
BiomassChem Group, Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, China
3
College of Agronomy and Biotechnology/Center of Biomass Engineering, China Agricultural University, Beijing 100193, China
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Received: 14 February 2019 / Revised: 20 February 2019 / Accepted: 20 February 2019 / Published: 26 February 2019
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Abstract

The selective conversion of phenolic materials is a well-adopted solution to upgrade lignin-based bioresources into high-value bio-oil in biomass refinery industries. This study focused on four main aspects: characterization, selection of catalysts, reaction dynamics behaviors, and mathematical modelling. A model lignin, that is, phenol, was selectively transformed into cyclohexanol by using the prepared Ni–xCo/γ-Al2O3 catalysts in a subcritical water medium. The hydrogenation results showed that when using 15 wt% of Ni–3Co/γ-Al2O3 particles, both total mole yield and selectivity of cyclohexanol could reach approximately 80%, which further indicated that the particles are suitable for catalytic hydrogenation of phenol in subcritical water. Moreover, a reaction kinetics model was developed by chemical reaction kinetics and least squares regression analysis, the robustness and predictability of which were also verified. View Full-Text
Keywords: phenol; bio-oil; conversion; subcritical water; NiCo/γ-Al2O3 catalyst; bimetallic phenol; bio-oil; conversion; subcritical water; NiCo/γ-Al2O3 catalyst; bimetallic
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Shi, Y.; Chen, S.; He, L.; Ning, P.; Guan, Q. Selective Conversion of Phenol in a Subcritical Water Medium Using γ-Al2O3 Supported Ni–Co Bimetallic Catalyst. Catalysts 2019, 9, 212.

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