Issue 47, 2016
From the journal:

RSC Advances

Chitosan grafted with a heteropolyanion-based ionic liquid as an effective and reusable catalyst for acetalization†

Wei-Hong Zhang,a   Shan-Shan Liu,a   Ping Liu,a   Jie Xu,a   Bing Xue,a   Xian-Yong Weib  and  Yong-Xin Li*a  

* Corresponding authors

a Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, Jiangsu, PR China
E-mail: liyxluck@163.com

b Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining & Technology, Xuzhou 221116, Jiangsu, PR China

Abstract

Chitosan immobilized with an acidic ionic liquid (CS–VImPS–PW) was fabricated via a radical addition reaction of N-vinylimidazoliumpropane sulfonate and chitosan, followed by acidification with a heteropolyacid. It was characterized by a Fourier transform infrared spectrometer, solid-state 13C nuclear magnetic resonance spectrometer, thermogravimetric analyzer, elemental analyzer, and Hammett indicator. Some acetalization reactions were investigated to evaluate the catalytic activity of CS–VImPS–PW. The results show that CS–VImPS–PW is highly active for the acetalization reactions in high acetal yields ranging from 83.2 to 96.2% and can be reused 8 times without noticeable loss of activity.

Graphical abstract: Chitosan grafted with a heteropolyanion-based ionic liquid as an effective and reusable catalyst for acetalization

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Article information

DOI
https://doi.org/10.1039/C6RA02169G
Article type
Paper
Submitted
25 Jan 2016
Accepted
19 Apr 2016
First published
20 Apr 2016

RSC Adv., 2016,6, 41404-41409

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Chitosan grafted with a heteropolyanion-based ionic liquid as an effective and reusable catalyst for acetalization

W. Zhang, S. Liu, P. Liu, J. Xu, B. Xue, X. Wei and Y. Li, RSC Adv., 2016, 6, 41404 DOI: 10.1039/C6RA02169G

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