Militz, Holger

[["dc.bibliographiccitation.firstpage","3383"],["dc.bibliographiccitation.issue","16"],["dc.bibliographiccitation.journal","Polymers"],["dc.bibliographiccitation.volume","14"],["dc.contributor.affiliation","Karthäuser, Johannes; 1Department of Wood Biology and Wood Products, Georg-August University of Goettingen, Buesgenweg 4, 37077 Goettingen, Germany"],["dc.contributor.affiliation","Biziks, Vladimirs; 2Surfactor Germany GmbH, Braunschweiger Str. 23 b, 38170 Schoeppenstedt, Germany"],["dc.contributor.affiliation","Frauendorf, Holm; 3Institute of Organic and Biomolecular Chemistry, Georg-August University of Goettingen, Tammannstraße 2, 37077 Goettingen, Germany"],["dc.contributor.affiliation","Mai, Carsten; 1Department of Wood Biology and Wood Products, Georg-August University of Goettingen, Buesgenweg 4, 37077 Goettingen, Germany"],["dc.contributor.affiliation","Militz, Holger; 1Department of Wood Biology and Wood Products, Georg-August University of Goettingen, Buesgenweg 4, 37077 Goettingen, Germany"],["dc.contributor.author","Karthäuser, Johannes"],["dc.contributor.author","Biziks, Vladimirs"],["dc.contributor.author","Frauendorf, Holm"],["dc.contributor.author","Mai, Carsten"],["dc.contributor.author","Militz, Holger"],["dc.contributor.editor","Alves, Luis"],["dc.date.accessioned","2022-09-01T09:51:17Z"],["dc.date.available","2022-09-01T09:51:17Z"],["dc.date.issued","2022"],["dc.date.updated","2022-11-11T13:14:51Z"],["dc.description.abstract","Cleavage by microwave-assisted pyrolysis is a way to obtain higher-value organic chemicals from technical lignins. In this report, pine kraft lignin (PKL), spruce and beech organosolv lignin (SOSL and BOSL), and calcium lignosulfonates from spruce wood (LS) were pyrolyzed at temperatures between 30 and 280 °C using vacuum low-temperature, microwave-assisted pyrolysis. The mass balance, energy consumption, condensation rate, and pressure changes of the products during the pyrolysis process were recorded. Phenolic condensates obtained at different temperatures during pyrolysis were collected, and their chemical composition was determined by GC-MS and GC-FID. The origin of the technical lignin had a significant influence on the pyrolysis products. Phenolic condensates were obtained in yields of approximately 15% (PKL and SOSL) as well as in lower yields of 4.5% (BOSL) or even 1.7% (LS). The main production of the phenolic condensates for the PKL and SOSL occurred at temperatures of approximately 140 and 180 °C, respectively. The main components of the phenolic fraction of the three softwood lignins were guaiacol, 4-methylguaiacol, 4-ethylguaiacol, and other guaiacol derivatives; however, the quantity varied significantly depending on the lignin source. Due to the low cleavage temperature vacuum, low-temperature, microwave-assisted pyrolysis could be an interesting approach to lignin conversion."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2022"],["dc.identifier.doi","10.3390/polym14163383"],["dc.identifier.pii","polym14163383"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/113923"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-597"],["dc.publisher","MDPI"],["dc.relation.eissn","2073-4360"],["dc.rights","Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/)."],["dc.title","Vacuum Low-Temperature Microwave-Assisted Pyrolysis of Technical Lignins"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]