Hydrodeoxygenation (HDO) is an important pathway for lignin-oil upgradation to produce high quality liquid fuels, in which the high-active catalyst is the key point to achieve a high HDO efficiency. In this study, Ru/TiO₂, Ru/CeO₂ and Ru/TiO₂–CeO₂ catalysts were synthesized by a novel photochemical method with a high Ru dispersion and used for the HDO of lignin-derived phenolic compounds. Among these three catalysts, Ru/TiO₂–CeO₂ showed a better performance than Ru/TiO₂ and Ru/CeO₂. And guaiacol was transformed into cyclohexane with conversion and product selectivity close to 100 % at 230 °C under 1 MPa hydrogen atmosphere. Ru/TiO₂–CeO₂ took the advantages of Ru/TiO₂ and Ru/CeO₂, namely high Ru metal dispersion, plenty of medium strength acid sites and abundance of oxygen vacancy, which promoted the guaiacol adsorption and the HDO catalytic activity. Moreover, Ru/TiO₂–CeO₂ catalyst showed an effective upgrading of other lignin-derived phenolic compounds. And the lignin-oil also enabled to be upgraded efficiently, producing a high content of hydrocarbons and alkylphenols.

加氢脱氧（HDO）是木质素油升级生产优质液体燃料的重要途径，其中高活性催化剂是实现高HDO效率的关键。在本研究中，Ru/TiO ₂、Ru/CeO ₂和Ru/TiO ₂ -CeO ₂催化剂采用新型光化学方法合成，具有高Ru 分散性，并用于木质素衍生酚类化合物的HDO。在这三种催化剂中，Ru/TiO ₂ -CeO ₂表现出比Ru/TiO ₂和Ru/CeO ₂更好的性能。愈创木酚转化为环己烷，在 230 °C 和 1 MPa 氢气气氛下，转化率和产物选择性接近 100%。钌/二氧化钛₂ -CeO ₂带的Ru / TiO 2的优点₂和Ru /的CeO ₂，即高Ru金属分散体，大量的中等强度的酸位点和氧空位，促进了愈创木酚吸附和HDO催化活性的丰度。此外，Ru/TiO ₂ –CeO ₂催化剂显示出其他木质素衍生酚类化合物的有效升级。并且木质素油也能够有效地升级，产生高含量的烃和烷基酚。