首页> 中文期刊> 《造纸与生物质材料:英文版》 >Solvent-enhanced Depolymerization of Lignin under Microwave Irradiation

Solvent-enhanced Depolymerization of Lignin under Microwave Irradiation

         

摘要

Lignin is considered an ideal natural material for the production of sustainable monophenols.In this study,a microwave-assisted depolymerization(MAD)strategy was developed.The introduction of solvent vapors in the dynamic vapor flow reaction system was performed to enhance the lignin conversion efficiency.The results showed that no liquid products were generated from the MAD of lignin without solvent vapors.With the introduction of solvents(CH_(3)OH,HCHO,HCOOH,and CH_(2)Cl_(2)),liquid products appeared(especially with CH_(2)Cl_(2),which had the highest yield of 41.9 wt%).Results from gas chromatography/mass spectrometry of liquid products showed that seven kinds of compounds,including guaiacols,phenols,syringols,methoxyphenyls,heterocycles,esters,and aromatics were identified.CH_(2)Cl_(2) can significantly enhance the production of monophenols(guaiacols,phenols,and syringols).The introduction of these solvent vapors can also facilitate the generation of porous char with high Brunauer-Emmett-Teller specific surface areas.Some carbon nanospheres deposited on the surface of the char were obtained with the assistance of CH_(2)Cl_(2).This study provides a facile method for the utilization of lignin in the field of bio-based fine chemicals.

著录项

  • 来源
    《造纸与生物质材料:英文版》 |2021年第3期|P.30-38|共9页
  • 作者单位

    National Demonstration Center for Experimental Light Chemistry Engineering Education(Shaanxi University of Science&Technology) Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development Key Laboratory of Paper based Functional Materials of China National Light Industry College of Bioresources Chemical and Materials Engineering Shaanxi University of Science&Technology Xi''an Shaanxi Province 710021 ChinaKey Laboratory of Pulp and Paper Science&Technology of Ministry of Education Qilu University of Technology(Shandong Academy of Sciences) Ji''nan Shandong Province 250353 China;

    National Demonstration Center for Experimental Light Chemistry Engineering Education(Shaanxi University of Science&Technology) Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development Key Laboratory of Paper based Functional Materials of China National Light Industry College of Bioresources Chemical and Materials Engineering Shaanxi University of Science&Technology Xi''an Shaanxi Province 710021 China;

    National Demonstration Center for Experimental Light Chemistry Engineering Education(Shaanxi University of Science&Technology) Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development Key Laboratory of Paper based Functional Materials of China National Light Industry College of Bioresources Chemical and Materials Engineering Shaanxi University of Science&Technology Xi''an Shaanxi Province 710021 China;

    National Demonstration Center for Experimental Light Chemistry Engineering Education(Shaanxi University of Science&Technology) Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development Key Laboratory of Paper based Functional Materials of China National Light Industry College of Bioresources Chemical and Materials Engineering Shaanxi University of Science&Technology Xi''an Shaanxi Province 710021 China;

    National Demonstration Center for Experimental Light Chemistry Engineering Education(Shaanxi University of Science&Technology) Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development Key Laboratory of Paper based Functional Materials of China National Light Industry College of Bioresources Chemical and Materials Engineering Shaanxi University of Science&Technology Xi''an Shaanxi Province 710021 China;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 有机化学;
  • 关键词

    lignin; microwave; solvent; monophenols; porous char;

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