Hydrodeoxygenation (HDO) of bio-oil is a hydrotreating process using hydrogen to remove oxygen (heteroatom) out of oxygenated compounds. This work focuses on the support effect of Ni2P catalysts on the HDO of bio-oil by using anisole as a model compound. Herein, a series of bulk Ni2P and Ni2P loaded on CeO2, TiO2, and TiO2-CeO2 were prepared. The CeO2, TiO2, and their mixed oxides were synthesized by urea precipitation. The catalytic activities of the prepared catalysts were evaluated in anisole HDO. The support performance of the oxides was compared with commercial CeO2 and TiO2, which have low surface areas (denoted as CeO2-L and TiO2-L, respectively) and also with SiO2, Al2O3, and activated carbon, which are extensively used as supports in the petroleum refinery. The results suggested that support tends to exhibit an important role in the hydrodeoxygenation pathway, which significantly influences catalyst performance and product selectivity in HDO of anisole. The Ni2P/CeO2 and Ni2P/TiO2-CeO2 are promising catalysts in anisole HDO for the tunable products of benzene and cyclohexane, respectively. Ni2P/CeO2 catalyst exhibited high selectivity to benzene while Ni2P/TiO2-CeO2 afforded the highest selectivity to cyclohexane. Adding a small amount of Ce in TiO2 synergistically increased the catalytic activity of Ni2P compared with TiO2 alone. The Ni2P/Ti0.98Ce0.02O2 affords a 1.7-fold higher conversion than the Ni2P /TiO2 and Ni2P /TiO2 (Aldrich)-L.

Effects of support for Ni2P catalysts on hydrodeoxygenation of bio-oil using anisole as a model compound

254th National Meeting (2017)

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