1. PO43− Coordinated Robust Single‐Atom Platinum Catalyst for Selective Polyol Oxidation**.
- Author
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Yan, Hao, Zhao, Mingyue, Feng, Xiang, Zhao, Siming, Zhou, Xin, Li, Shangfeng, Zha, Minghao, Meng, Fanyu, Chen, Xiaobo, Liu, Yibin, Chen, De, Yan, Ning, and Yang, Chaohe
- Subjects
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CATALYSTS , *HYDROXY acids , *CATALYST selectivity , *HETEROGENEOUS catalysts , *CHEMICAL synthesis , *PLATINUM catalysts , *POLYOLS , *AQUEOUS solutions - Abstract
Achieving efficient catalytic conversion over a heterogeneous catalyst with excellent resistance against leaching is still a grand challenge for sustainable chemical synthesis in aqueous solution. Herein, we devised a single‐atom Pt1/hydroxyapatite (HAP) catalyst via a simple hydrothermal strategy. Gratifyingly, this robust Pt1/HAP catalyst exhibits remarkable catalytic selectivity and catalyst stability for the selective oxidation of C2–C4 polyols to corresponding primary hydroxy acids. It is found that the Pt−(O−P) linkages with strong electron‐withdrawing function of PO43− (Pt1−OPO43− pair active site) not only realize the activation of the C−H bond, but also destabilize the transition state from adsorbed hydroxy acids toward the C−C cleavage, resulting in the sharply increased selectivity of hydroxy acids. Moreover, the strong PO43−‐coordination effect provides electrostatic stabilization for single‐atom Pt, ensuring the highly efficient catalysis of Pt1/HAP for over 160 hours with superior leaching resistance. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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