Citation: Juanjuan Liu, Shihui Zou, Jiachao Wu, Hisayoshi Kobayashi, Hongting Zhao, Jie Fan. Green catalytic oxidation of benzyl alcohol over Pt/ZnO in base-free aqueous medium at room temperature[J]. Chinese Journal of Catalysis, ;2018, 39(6): 1081-1089. doi: 10.1016/S1872-2067(18)63022-0 shu

Green catalytic oxidation of benzyl alcohol over Pt/ZnO in base-free aqueous medium at room temperature

a College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310036, Zhejiang, China;
b Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, China;
c Department of Chemistry and Materials Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan

Received Date: 27 December 2017
Revised Date: 3 January 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (21703050, 21271153, 21373181), China Postdoctoral Science Foundation (512200-X91701), and Special Research Foundation of Young Teachers in Hangzhou Dianzi University (ZX150204307002/032).

The selective oxidation of alcohol using molecular oxygen as an oxidant and water as a green solvent is of great interest in green chemistry. In this work, we present a systematic study of a Pt/ZnO catalyst for the selective oxidation of benzyl alcohol at room temperature under base-free aqueous conditions. Experimental observations and density functional theory calculations suggest that ZnO as a support can facilitate the adsorption of benzyl alcohol, which subsequently reacts with the activated oxygen species on the Pt catalyst, producing benzaldehyde. The resulting solid achieves a high conversion (94.1 ±5.1% in 10 h) of benzyl alcohol and nearly 100% selectivity to benzaldehyde with ambient air as the oxidant. In addition, by introducing a small amount of Bi (1.78 wt%) into Pt/ZnO, we can further enhance the activity by 350%.
- Pt/ZnO,
- Selective oxidation,
- Benzyl alcohol,
- C-H activation,
- Aqueous medium,
- Room temperature
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