Universität zu Köln

Scott, Martin ORCID: 0000-0002-9830-3856, Deuss, Peter J., de Vries, Johannes G., Prechtl, Martin H. G. ORCID: 0000-0003-2155-8006 and Barta, Katalin (2016). New insights into the catalytic cleavage of the lignin beta-O-4 linkage in multifunctional ionic liquid media. Catal. Sci. Technol., 6 (6). S. 1882 - 1892. CAMBRIDGE: ROYAL SOC CHEMISTRY. ISSN 2044-4761

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Abstract

Ionic liquids are attractive reaction media for the solubilisation and depolymerisation of lignin into value-added products. However, mechanistic insight related to the cleavage of specific linkages relevant to efficient lignin depolymerisation in such solvents is still lacking. This study presents important insight into the scission of the most abundant lignin beta-O-4 motif in Bronsted acidic ionic liquids. Using relevant model compounds, cleavage products were identified and undesired side reactions examined carefully. Stabilization of reactive intermediates was achieved in ionic liquids comprising both Bronsted acidic function and stabilized nanoparticles that comprise hydrogenation activity in order to suppress undesired side reactions. Especially, the in situ hydrogenation of the aldehyde intermediate originating from the acid-catalysed cleavage of lignin beta-O-4 model compounds into more stable alcohols was investigated. This is the first time that such products have been systematically targeted in these multifunctional reaction media in relation to lignin depolymerization.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Scott, Martin UNSPECIFIED orcid.org/0000-0002-9830-3856 UNSPECIFIED Deuss, Peter J. UNSPECIFIED UNSPECIFIED UNSPECIFIED de Vries, Johannes G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Prechtl, Martin H. G. UNSPECIFIED orcid.org/0000-0003-2155-8006 UNSPECIFIED Barta, Katalin UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-290499
DOI:	10.1039/c5cy01554e
Journal or Publication Title:	Catal. Sci. Technol.
Volume:	6
Number:	6
Page Range:	S. 1882 - 1892
Date:	2016
Publisher:	ROYAL SOC CHEMISTRY
Place of Publication:	CAMBRIDGE
ISSN:	2044-4761
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BOND-CLEAVAGE; RENEWABLE CHEMICALS; MODEL COMPOUNDS; ACID; DEPOLYMERIZATION; CONVERSION; BIOMASS; NANOPARTICLES; HYDROGENOLYSIS; HYDROGENATION Multiple languages Chemistry, Physical Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/29049