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The Degradation and Repolymerization Analysis on Solvolysis Liquefaction of Corn Stalk

One of the most effective and renewable utilization methods for lignocellulosic feedstocks is the transformation from solid materials to liquid products. In this work, corn stalk (CS) was liquified with polyethylene glycol 400 (PEG400) and glycerol as the liquefaction solvents, and sulfuric acid as...

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Autores principales: Chen, Weisheng, Zhang, Qinqin, Lin, Xiaoqi, Jiang, Kaisen, Han, Dezhi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7650792/
https://www.ncbi.nlm.nih.gov/pubmed/33066199
http://dx.doi.org/10.3390/polym12102337
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author Chen, Weisheng
Zhang, Qinqin
Lin, Xiaoqi
Jiang, Kaisen
Han, Dezhi
author_facet Chen, Weisheng
Zhang, Qinqin
Lin, Xiaoqi
Jiang, Kaisen
Han, Dezhi
author_sort Chen, Weisheng
collection PubMed
description One of the most effective and renewable utilization methods for lignocellulosic feedstocks is the transformation from solid materials to liquid products. In this work, corn stalk (CS) was liquified with polyethylene glycol 400 (PEG400) and glycerol as the liquefaction solvents, and sulfuric acid as the catalyst. The liquefaction conditions were optimized with the liquefaction yield of 95.39% at the reaction conditions of 150 °C and 120 min. The properties of CS and liquefaction residues (LRs) were characterized using ATR–FTIR, TG, elemental analysis and SEM. The chemical components of liquefied product (LP) were also characterized by GC–MS. The results indicated that the depolymerization and repolymerization reaction took place simultaneously in the liquefaction process. The depolymerization of CS mainly occurred at the temperature of <150 °C, and the repolymerization of biomass derivatives dominated at a higher temperature of 170 °C by the lignin derivatives repolymerization with cellulose derivatives, hemicellulose derivatives and PEG400 and self-condensation of lignin derivatives. The solvolysis liquefaction of CS could be classified into the mechanism of electrophilic substitution reaction attacked by the hydrogen cation.
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spelling pubmed-76507922020-11-10 The Degradation and Repolymerization Analysis on Solvolysis Liquefaction of Corn Stalk Chen, Weisheng Zhang, Qinqin Lin, Xiaoqi Jiang, Kaisen Han, Dezhi Polymers (Basel) Article One of the most effective and renewable utilization methods for lignocellulosic feedstocks is the transformation from solid materials to liquid products. In this work, corn stalk (CS) was liquified with polyethylene glycol 400 (PEG400) and glycerol as the liquefaction solvents, and sulfuric acid as the catalyst. The liquefaction conditions were optimized with the liquefaction yield of 95.39% at the reaction conditions of 150 °C and 120 min. The properties of CS and liquefaction residues (LRs) were characterized using ATR–FTIR, TG, elemental analysis and SEM. The chemical components of liquefied product (LP) were also characterized by GC–MS. The results indicated that the depolymerization and repolymerization reaction took place simultaneously in the liquefaction process. The depolymerization of CS mainly occurred at the temperature of <150 °C, and the repolymerization of biomass derivatives dominated at a higher temperature of 170 °C by the lignin derivatives repolymerization with cellulose derivatives, hemicellulose derivatives and PEG400 and self-condensation of lignin derivatives. The solvolysis liquefaction of CS could be classified into the mechanism of electrophilic substitution reaction attacked by the hydrogen cation. MDPI 2020-10-13 /pmc/articles/PMC7650792/ /pubmed/33066199 http://dx.doi.org/10.3390/polym12102337 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Chen, Weisheng
Zhang, Qinqin
Lin, Xiaoqi
Jiang, Kaisen
Han, Dezhi
The Degradation and Repolymerization Analysis on Solvolysis Liquefaction of Corn Stalk
title The Degradation and Repolymerization Analysis on Solvolysis Liquefaction of Corn Stalk
title_full The Degradation and Repolymerization Analysis on Solvolysis Liquefaction of Corn Stalk
title_fullStr The Degradation and Repolymerization Analysis on Solvolysis Liquefaction of Corn Stalk
title_full_unstemmed The Degradation and Repolymerization Analysis on Solvolysis Liquefaction of Corn Stalk
title_short The Degradation and Repolymerization Analysis on Solvolysis Liquefaction of Corn Stalk
title_sort degradation and repolymerization analysis on solvolysis liquefaction of corn stalk
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7650792/
https://www.ncbi.nlm.nih.gov/pubmed/33066199
http://dx.doi.org/10.3390/polym12102337
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