Influence of a mixed solvent containing ionic liquids on the thermal hazard of the cellulose dissolution process

Yu ki Yamamoto, Atsumi Miyake

抄録

Ionic liquids (ILs) can act as high-performance solvents for cellulose in biomass conversion processes. However, the increase in viscosity that occurs upon dissolution of the cellulose in ILs can cause problems. To overcome this problem, ILs can be mixed with an organic solvent. This study investigates the thermal risk of the cellulose dissolution process using mixed solvents, ILs, and organic solvents. Sealed-cell differential scanning calorimetry (SC-DSC) was conducted on mixtures of 1-butyl-3-methylimidazolium acetate (BmimAc) and three aprotic polar solvents [dimethyl sulfoxide (DMSO), dimethyl acetamide (DMAc), and N,N-dimethylformamide (DMF)] to investigate thermal hazards. In addition, for samples exhibiting exothermal behavior greater than 100 J g−1, a prediction of runaway reaction behavior was obtained using kinetic analysis. Results revealed that BmimAc/DMSO could undergo a violent exothermic reaction, with a risk of a runaway reaction depending on the process temperature.

本文言語英語
ページ(範囲)743-748
ページ数6
ジャーナルJournal of Thermal Analysis and Calorimetry
127
1
DOI
ジャーナル掲載日出版済み - 2017 1 1

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Ionic liquids
Cellulose
Dissolution
Dimethyl sulfoxide
Organic solvents
Hazards
Exothermic reactions
Dimethylformamide
Differential scanning calorimetry
Biomass
Viscosity
Kinetics
Temperature

Keywords

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Physical and Theoretical Chemistry

    これを引用

    Influence of a mixed solvent containing ionic liquids on the thermal hazard of the cellulose dissolution process. / Yamamoto, Yu ki; Miyake, Atsumi.

    :: Journal of Thermal Analysis and Calorimetry, 巻 127, 番号 1, 01.01.2017, p. 743-748.

    研究成果: ジャーナルへの寄稿記事

    Yamamoto, Yu ki; Miyake, Atsumi / Influence of a mixed solvent containing ionic liquids on the thermal hazard of the cellulose dissolution process.

    :: Journal of Thermal Analysis and Calorimetry, 巻 127, 番号 1, 01.01.2017, p. 743-748.

    研究成果: ジャーナルへの寄稿記事

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    AB - Ionic liquids (ILs) can act as high-performance solvents for cellulose in biomass conversion processes. However, the increase in viscosity that occurs upon dissolution of the cellulose in ILs can cause problems. To overcome this problem, ILs can be mixed with an organic solvent. This study investigates the thermal risk of the cellulose dissolution process using mixed solvents, ILs, and organic solvents. Sealed-cell differential scanning calorimetry (SC-DSC) was conducted on mixtures of 1-butyl-3-methylimidazolium acetate (BmimAc) and three aprotic polar solvents [dimethyl sulfoxide (DMSO), dimethyl acetamide (DMAc), and N,N-dimethylformamide (DMF)] to investigate thermal hazards. In addition, for samples exhibiting exothermal behavior greater than 100 J g−1, a prediction of runaway reaction behavior was obtained using kinetic analysis. Results revealed that BmimAc/DMSO could undergo a violent exothermic reaction, with a risk of a runaway reaction depending on the process temperature.

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