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Issue 6, 2019
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Chemodivergent hydrogenolysis of eucalyptus lignin with Ni@ZIF-8 catalyst

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Abstract

Reductive catalytic fractionation (RCF) of lignocellulosic biomass, that is depolymerization of the native lignin component into well-defined monomeric phenols in the first step, offers an opportunity to utilize entire biomass components. Herein, we report that Ni@ZIF-8 can serve as a chemodivergent catalyst in RCF of eucalyptus sawdust, thus selectively producing phenolic compounds having either a propyl or propanol end-chain under different reaction conditions. In both cases, high yields of lignin monomers and a high degree of delignification were achieved, next to well-preserved carbohydrate pulp suitable for further processing. A mechanistic study using model compounds indicated that the dehydroxylation at the γ-position of the β-O-4 structure may be involved in the selectivity-controlling step.

Graphical abstract: Chemodivergent hydrogenolysis of eucalyptus lignin with Ni@ZIF-8 catalyst

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Supplementary files

Article information


Submitted
09 Nov 2018
Accepted
13 Feb 2019
First published
15 Feb 2019

Green Chem., 2019,21, 1498-1504
Article type
Paper

Chemodivergent hydrogenolysis of eucalyptus lignin with Ni@ZIF-8 catalyst

X. Liu, H. Li, L. Xiao, R. Sun and G. Song, Green Chem., 2019, 21, 1498
DOI: 10.1039/C8GC03511C

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