甘油酸
甘油醛
甘油
化学
催化作用
选择性
催化氧化
有机化学
酶
脱氢酶
作者
Zhe An,Zilong Zhang,Zeyu Huang,Hongbo Han,Binbin Song,Jian Zhang,Ping Qi,Yanru Zhu,Hongyan Song,Bin Wang,Lirong Zheng,Jing He
标识
DOI:10.1038/s41467-022-33038-w
摘要
The selective oxidation of glycerol to glyceric acid, an important value-added reaction from polyols, is a typical cascade catalytic process. It is still of great challenge to simultaneously achieve high glycerol activity and glyceric acid selectivity, suffering from either deep oxidation and C-C cleavage or poor oxidation efficiency from glyceraldehyde to glyceric acid. Herein, this work, inspired by nature, proposes a cascade synergistic catalysis strategy by atomic and low-coordinated cluster Pt on well-defined Cu-CuZrOx, which involves enhanced C-H activation on atomic Pt1 and O-H activation on cluster Ptn in the oxidation of glycerol to glyceraldehyde, and cluster Ptn for C=O activation followed by O-H insertion and atomic Pt1 for C-H activation in the tandem oxidation of glyceraldehyde to glyceric acid. The enhanced C-H activation in the cascade process by atomic Pt1 is revealed to be essential for the high glycerol activity (90.0±0.1%) and the glyceric acid selectivity (80.2±0.2%).
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