Interfacial Hydrolysis of Acetals on Protonated TEMPO-oxidized Cellulose Nanofibers

Yuya Tamura, Kyohei Kanomata, Takuya Kitaoka

研究成果: ジャーナルへの寄稿記事

6 引用 (Scopus)

抄録

2,2,6,6-Tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofibers (TOCNs), which have a high-density of exposed carboxylic acid groups on their crystalline surfaces, effectively act as acid catalysts in acetal hydrolysis. Carboxy-free cellulose nanofibers, polymeric carboxylic acids, and homogeneous acetic acid do not show significant catalytic activity under the same reaction conditions. Mercerized TOCNs differing from the original TOCNs in a crystalline structure were also ineffective, which suggests that the unique nanoarchitectural features of TOCNs, such as regularly aligned carboxylic acid groups, large specific surface areas, and structural rigidity, must be major factors in the acceleration of acetal hydrolysis. Kinetic analysis suggested that substrates and/or acid catalyst species were concentrated on the TOCN crystalline surfaces, which significantly enhanced the catalytic activity.

元の言語英語
記事番号5021
ジャーナルScientific reports
8
発行部数1
DOI
出版物ステータス出版済み - 12 1 2018

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oxidized cellulose
Acetals
Nanofibers
Hydrolysis
Carboxylic Acids
Crystalline materials
Catalyst activity
Catalysts
Acids
Cellulose
Specific surface area
Acetic Acid
Rigidity
TEMPO
Kinetics
Substrates

All Science Journal Classification (ASJC) codes

  • General

これを引用

Interfacial Hydrolysis of Acetals on Protonated TEMPO-oxidized Cellulose Nanofibers. / Tamura, Yuya; Kanomata, Kyohei; Kitaoka, Takuya.

:: Scientific reports, 巻 8, 番号 1, 5021, 01.12.2018.

研究成果: ジャーナルへの寄稿記事

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