Chemodivergent hydrogenolysis of eucalyptus lignin with Ni@ZIF-8 catalyst. Issue 6 (26th February 2019)

• Record Type: Journal Article
• Authors: Liu, Xue; Li, Helong; Xiao, Ling-Ping; Sun, Run-Cang; Song, Guoyong
• Is Part Of: Green chemistry. Volume 21:Issue 6(2019)
• Page Start: 1498
• Page End: 1504
• Publication Date: 2019-02-26
• Subjects: Environmental chemistry -- Industrial applications -- Periodicals; Environmental management -- Periodicals; 660
• DOI: 10.1039/c8gc03511c
• Languages: English
• ISSNs: 1463-9262

Abstract

Abstract : Chemodivergent hydrogenolysis of eucalyptus biomass leading to 4-propanol- or 4-propyl-substituted phenols, together with a well-preserved carbohydrate component, was achieved by using Ni@ZIF-8 catalyst. 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.