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Hydrodeoxygenation of lignin-derived phenolic compounds over Ru/TiO2–CeO2 catalyst prepared by photochemical reduction method
Journal of the Energy Institute ( IF 5.6 ) Pub Date : 2021-07-22 , DOI: 10.1016/j.joei.2021.07.012
Riyang Shu 1, 2 , Zhuojie Zhong 1 , Hongyun You 1 , Zhipeng Tian 1 , Ying Chen 1 , Longlong Ma 2
Affiliation  

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.



中文翻译:

光化学还原法制备的Ru/TiO2-CeO2催化剂上木质素衍生酚类化合物的加氢脱氧

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。

更新日期:2021-08-05
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