Design and synthesis of Au-Pd/TiO2-SiO2 catalyst with high selectivity for partial oxidation of benzyl alcohol

被引：0

作者：

Wu P. ^{[1
]}

Shu J. ^{[1
]}

Wang Y. ^{[1
]}

Zhang Y. ^{[1
]}

Zhao L. ^{[2
]}

Bai P. ^{[1
]}

机构：

[1] School of Chemistry and Chemical Engineering in China University of Petroleum (East China), Qingdao

[2] School of Material Science and Engineering in China University of Petroleum (East China), Qingdao

来源：

Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | 2024年 / 48卷 / 01期

关键词：

noble metal nano-catalyst; partial oxidation; promoter effect; surface acidity;

D O I：

10.3969/j.issn.1673-5005.2024.01.021

中图分类号：

学科分类号：

摘要：

Noble metal nanoparticle catalysts exhibit high catalytic activity in the partial oxidation of benzyl alcohol to benzaldehyde. 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. © 2024 University of Petroleum, China. All rights reserved.

引用

页码：189 / 196

页数：7

共 19 条

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