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- Title
Pd-Based Nano-Catalysts Promote Biomass Lignin Conversion into Value-Added Chemicals.
- Authors
Zhao, Ming; Zhao, Liang; Zhao, Xiao-Yan; Cao, Jing-Pei; Maruyama, Koh-ichi
- Abstract
Lignin, as a structurally complex biomaterial, offers a valuable resource for the production of aromatic chemicals; however, its selective conversion into desired products remains a challenging task. In this study, we prepared three types of Pd-based nano-catalysts and explored their application in the depolymerization of alkali lignin, under both H2-free (hydrogen transfer) conditions and H2 atmosphere conditions. The materials were well characterized with TEM, XRD, and XPS and others, and the electronic interactions among Pd, Ni, and P were analyzed. The results of lignin depolymerization experiments revealed that the ternary Pd-Ni-P catalyst exhibited remarkable performance and guaiacols could be produced under H2 atmosphere conditions in 14.2 wt.% yield with a selectivity of 89%. In contrast, Pd-Ni and Pd-P catalysts resulted in a dispersed product distribution. Considering the incorporation of P and the Pd-Ni synergistic effect in the Pd-Ni-P catalyst, a possible water-involved transformation route of lignin depolymerization was proposed. This work indicates that metal phosphides could be promising catalysts for the conversion of lignin and lignin-derived feedstocks into value-added chemicals.
- Subjects
LIGNINS; BIOMASS conversion; PHOSPHIDES; X-ray diffraction; DEPOLYMERIZATION
- Publication
Materials (1996-1944), 2023, Vol 16, Issue 14, p5198
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma16145198