Journal
APPLIED CATALYSIS A-GENERAL
Volume 591, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcata.2019.117378
Keywords
Hydrodeoxygenation; Niobium phosphate; Lewis acid; Anisole; Bio-oil
Categories
Funding
- National Natural Science Foundation of China [21606134, 21968021, 21676149, 21566029, 21868021, 21868020]
- Incentive Fund for the Scientific and Technology Innovation Program of Inner Mongolia
- Grassland Talents Engineering of Inner Mongolia
- University-level Key Scientific Research Projects of Ordos Institute of Technology [KYZD2017002]
- Innovative and Entrepreneurial Talents
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An efficient bifunctional NbOPO4 supported Ru catalyst (Ru-NbOPO4) was applied to the hydrodeoxygenation of aromatic ethers and phenols and the upgrading of bio-oil. Characterization results revealed that the Ru-NbOPO4 catalyst possessed strong acidity, including Lewis and Bronsted acids. The Lewis acid sites originated from the Nb-O bonding structures, including slightly distorted octahedral NbO6, regular tetrahedral NbO4 and highly distorted octahedral NbO6. In combination with the strong acidity of the Nb-O species and excellent hydrogenation activity of the metallic Ru, the bifunctional Ru-NbOPO4 catalyst exhibited an excellent catalytic activity in the hydrodeoxygenation of aromatic ethers and phenols with different structures, and even real bio-oil to alkanes. The hydrocarbon yield after real bio-oil upgradation was up to 88.2 %. Carbon deposition and enlargement of the Ru nanoparticles resulted in slight deactivation of the catalyst. The catalytic activity could be mostly recovered after being calcined and reduced.
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