Ni/ZrO₂–CeO₂ catalysts with high loading of nickel have been prepared by the coprecipitation method and employed to investigate the catalytic hydrodeoxygenation (HDO) performance of guaiacol. The materials obtained were characterized using N₂ adsorption–desorption, X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, H₂-TPR, CO chemisorption, and NH₃-TPD. For Ni/ZrO₂–CeO₂ catalysts, the formation of the ZrO₂−CeO₂ solid solutions enhances the dispersion of the metal Ni. The oxygen vacancies resulting from Ce³⁺ species in Ni/ZrO₂–CeO₂ promote the adsorption and activation of the oxygen-containing group in guaiacol molecules and thereby improve the ability of the catalyst to break the C–O bond. The addition of ZrO₂ increases the number of acidic sites of the catalysts. These factors synergistically enhance the HDO performance of the catalysts.

中文翻译：

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ZrO ₂ -CeO ₂负载高负载镍催化剂对愈创木酚的加氢脱氧

采用共沉淀法制备了高载量镍的Ni / ZrO ₂ -CeO ₂催化剂，用于研究愈创木酚的催化加氢脱氧性能。使用N ₂吸附-解吸，X射线衍射，透射电子显微镜，X射线光电子能谱，H ₂ -TPR，CO化学吸附和NH ₃ -TPD对所得材料进行表征。对于Ni / ZrO ₂ -CeO ₂催化剂，ZrO ₂ -CeO ₂固溶体的形成增强了金属Ni的分散性。Ni / ZrO _2中Ce ³⁺产生的氧空位–CeO ₂促进了愈创木酚分子中含氧基团的吸附和活化，从而提高了催化剂打破C–O键的能力。ZrO _2的添加增加了催化剂的酸性位点的数量。这些因素协同地增强了催化剂的HDO性能。