Pt<sub>1</sub> enhanced C-H activation synergistic with Pt<sub>n</sub> catalysis for glycerol cascade oxidation to glyceric acid.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 36115832.
- Also identified by DOI 10.1038/s41467-022-33038-w and PMC identifier 9482651.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
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-CuZrO<sub>x</sub>, which involves enhanced C-H activation on atomic Pt<sub>1</sub> and O-H activation on cluster Pt<sub>n</sub> in the oxidation of glycerol to glyceraldehyde, and cluster Pt<sub>n</sub> for C=O activation followed by O-H insertion and atomic Pt<sub>1</sub> for C-H activation in the tandem oxidation of glyceraldehyde to glyceric acid. The enhanced C-H activation in the cascade process by atomic Pt<sub>1</sub> is revealed to be essential for the high glycerol activity (90.0±0.1%) and the glyceric acid selectivity (80.2±0.2%).
Medical subject headings
- Glyceraldehyde
- Glycerol