Classic deep oxidation CuMnOx catalysts catalyzed selective oxidation of benzyl alcohol

被引：12

作者：

Yang, Qi ^{[1
]}

Tang, Yuantao ^{[1
]}

Zhang, Haidong ^{[1
]}

Chen, Jun ^{[2
]}

Jiang, Zhiquan ^{[3
]}

Xiong, Kun ^{[1
]}

Wang, Jingjing ^{[1
]}

Liu, Xinai ^{[2
]}

Yang, Na ^{[1
]}

Du, Qiuyue ^{[1
]}

Song, Yuting ^{[1
]}

机构：

[1] Chongqing Technol & Business Univ, Coll Environm & Resource, Res Ctr Waste Oil Recovery Technol & Equipment, Minist Educ, Chongqing 400067, Peoples R China

[2] Sci & Technol Surface Phys & Chem Lab, Jiangyou 621908, Peoples R China

[3] Univ Sci & Technol China, Hefei Natl Res Ctr Phys Sci Microscale, Hefei 230026, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2023年 / 610卷

基金：

中国国家自然科学基金;

关键词：

Selective oxidation; CuMnOx; Oxide catalyst; Oxide pair; Benzyl alcohol; LIQUID-PHASE OXIDATION; MIXED-OXIDE CATALYSTS; HYDROGEN-PEROXIDE; AEROBIC OXIDATION; CARBON; COPPER; DECOMPOSITION; DEGRADATION; EFFICIENT; BENZENE;

D O I：

10.1016/j.apsusc.2022.155364

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This work presents an extension of classic deep oxidation CuMnOx catalysts to a selective oxidation of alcohol with high efficiency and in an environmental-friendly reaction system. A series of CuMnOx catalysts charac-terized by CuO-Cu1.4Mn1.6O4 and Mn2O3-Cu1.4Mn1.6O4 oxide pairs were prepared via a novel half carbonized citrus grandis peel assisted hard template method. A shift of the oxide pairs from CuO-Cu1.4Mn1.6O4 to Mn2O3- Cu1.4Mn1.6O4 has been achieved by tuning Cu/Mn molar ratio, and then leads to a one-pass benzaldehyde yield more than 50% with 100% benzaldehyde selectivity in the selective oxidation of benzyl alcohol using H2O2 as oxidant. Higher relative amount of Cu1.4Mn1.6O4 in either Mn2O3-Cu1.4Mn1.6O4 or CuO-Cu1.4Mn1.6O4 oxide pair is found to be essential for achieving high catalytic activity. The interaction between the Cu1.4Mn1.6O4 con-stituent and Mn2O3 constituent of Mn2O3-Cu1.4Mn1.6O4 oxide pair is found to able to enhance the formation of Cu+ species, which can reacts with H2O2 to produce & BULL;OH and then touch off a Fenton-like catalytic oxidation process of benzyl alcohol, in the current CuMnOx-H2O2 system, to produce benzaldehyde with high selectivity. This work presents a new perspective in the development of highly effective and low cost CuMnOx catalysts for heterogeneous catalytic oxidation reactions.

引用

页数：12