Jump to main content
Jump to site search

Issue 24, 2019
Previous Article Next Article

Au–Pd alloy cooperates with covalent triazine frameworks for the catalytic oxidative cleavage of β-O-4 linkages

Author affiliations

Abstract

To design highly efficient catalysts for the cleavage of the C–O/C–C bond is the key task in the depolymerization of lignin. Bimetallic alloy catalysts Au–Pd-CTFs were developed to be effective in the oxidative cleavage of β-O-4 lignin model compounds with O2. Au–Pd nanoparticles with an Au/Pd molar ratio between 1 : 1 and 1 : 1.5 showed the highest cleavage efficiency. The kinetics of the reaction process revealed that a synergistic effect between Au and Pd played a crucial role in the oxidation of Cα–OH into Cα[double bond, length as m-dash]O, which was the rate-determining step for the whole oxidative cleavage process. Further insight revealed that the cooperative effect between Au–Pd nanoparticles and the support covalent triazine frameworks (CTFs) facilitated the cleavage of the formed β-O-4 ketone compound to the corresponding aromatics. In addition, Au–Pd-CTF catalysts also showed efficiency in the oxidative transformation of the organosolv lignin. This catalytic system will provide guidance in the oxidative cleavage of β-O-4 linkages in lignin.

Graphical abstract: Au–Pd alloy cooperates with covalent triazine frameworks for the catalytic oxidative cleavage of β-O-4 linkages

Back to tab navigation

Supplementary files

Publication details

The article was received on 02 Sep 2019, accepted on 05 Nov 2019 and first published on 05 Nov 2019


Article type: Paper
DOI: 10.1039/C9GC03081F
Green Chem., 2019,21, 6707-6716

  •   Request permissions

    Au–Pd alloy cooperates with covalent triazine frameworks for the catalytic oxidative cleavage of β-O-4 linkages

    L. Zhao, S. Shi, G. Zhu, M. Liu, J. Gao and J. Xu, Green Chem., 2019, 21, 6707
    DOI: 10.1039/C9GC03081F

Search articles by author

Spotlight

Advertisements