The Degradation and Repolymerization Analysis on Solvolysis Liquefaction of Corn Stalk
<b>: </b>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,...
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doaj-6a73002403294864ac6f065745bcb9b32020-11-25T03:42:20ZengMDPI AGPolymers2073-43602020-10-01122337233710.3390/polym12102337The Degradation and Repolymerization Analysis on Solvolysis Liquefaction of Corn StalkWeisheng Chen0Qinqin Zhang1Xiaoqi Lin2Kaisen Jiang3Dezhi Han4Shandong Provincial Key Laboratory of Biochemical Engineering, College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaShandong Provincial Key Laboratory of Biochemical Engineering, College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaShandong Provincial Key Laboratory of Biochemical Engineering, College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaShandong Provincial Key Laboratory of Biochemical Engineering, College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaState Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China<b>: </b>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.https://www.mdpi.com/2073-4360/12/10/2337lignocellulosic biomassliquefactioncorn stalkresiduerepolymerizationutilization |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Weisheng Chen Qinqin Zhang Xiaoqi Lin Kaisen Jiang Dezhi Han |
spellingShingle |
Weisheng Chen Qinqin Zhang Xiaoqi Lin Kaisen Jiang Dezhi Han The Degradation and Repolymerization Analysis on Solvolysis Liquefaction of Corn Stalk Polymers lignocellulosic biomass liquefaction corn stalk residue repolymerization utilization |
author_facet |
Weisheng Chen Qinqin Zhang Xiaoqi Lin Kaisen Jiang Dezhi Han |
author_sort |
Weisheng Chen |
title |
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_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_sort |
degradation and repolymerization analysis on solvolysis liquefaction of corn stalk |
publisher |
MDPI AG |
series |
Polymers |
issn |
2073-4360 |
publishDate |
2020-10-01 |
description |
<b>: </b>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. |
topic |
lignocellulosic biomass liquefaction corn stalk residue repolymerization utilization |
url |
https://www.mdpi.com/2073-4360/12/10/2337 |
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