中国石油大学学报（自然科学版）2024，Vol.48Issue(1)：189-196,8.DOI:10.3969/j.issn.1673-5005.2024.01.021
高选择性部分氧化催化剂Au-Pd/TiO2-SiO2的设计合成与苯甲醇部分氧化反应
Design and synthesis of Au-Pd/TiO2-SiO2 catalyst with high selectivity for partial oxidation of benzyl alcohol
摘要
Abstract
Noble metal nanoparticle catalysts exhibit high catalytic activity in the partial oxidation of benzyl alcohol to benzal-dehyde.However,the selectivity of benzaldehyde is low.TiO2 modified Au-Pd/TiO2-SiO2 nano alloy catalysts were prepared by a one pot method and applied for benzyl alcohol partial oxidation.It is found that the introduction of a small amount of TiO2 increases the metal dispersion on the support surface,and modifies the electronic structure of the Au-Pd alloy surface,and improves the reaction activity.Also,the number of Lewis acid sites on the support surface are increased,which improves benzaldehyde selectivity.However,the introduction of a large amount of TiO2 destroys the alloying of Au-Pd and produces a large number of Bronsted acid sites,which greatly reduces the reaction activity and product selectivity.关键词
贵金属纳米催化剂/部分氧化/表面酸性/助剂效应Key words
noble metal nano-catalyst/partial oxidation/surface acidity/promoter effect分类
化学化工引用本文复制引用
吴萍萍,舒洁,王悦,张永辉,赵联明,白鹏..高选择性部分氧化催化剂Au-Pd/TiO2-SiO2的设计合成与苯甲醇部分氧化反应[J].中国石油大学学报（自然科学版）,2024,48(1):189-196,8.基金项目
国家自然科学基金项目(51601223) （51601223）
山东省自然科学基金项目(ZR2021ME020,ZR2022MB094) （ZR2021ME020,ZR2022MB094）
