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Highly Efficient Sulfonic/Carboxylic Dual-Acid Synergistic Catalysis for Esterification Enabled by Sulfur-Rich Graphene Oxide

Zhang, Honglei; Luo, Xiang; Shi, Kaiqi; Wu, Tao; He, Feng; Zhou, Shoubin; Chen, George Z.; Peng, Chuang

Authors

Honglei Zhang

Xiang Luo xiang.luo@nottingham.edu.cn

Kaiqi Shi kaiqishi@hotmail.com

Tao Wu

Feng He

Shoubin Zhou

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GEORGE CHEN GEORGE.CHEN@NOTTINGHAM.AC.UK
Professor of Electrochemical Technologies

Chuang Peng



Abstract

A new sulfonic/carboxylic dual-acid catalyst based on sulfur-rich graphene oxide (GO-S) was readily prepared and used as a highly efficient and reusable solid acid catalyst toward the esterification of oleic acid with methanol for biodiesel production. Higher yields of methyl oleate (98 %) and over 3 times higher turnover frequencies (TOFs) were observed for the GO-S dual-acid catalyst, compared to liquid sulfuric acid or other carbon-based solid acid catalysts. The “acidity” of sulfonic acid groups was enhanced by the addition of carboxylic acid groups as the combination of the two acids enhances their inherent activity by associative interaction.

Journal Article Type Article
Publication Date Sep 11, 2017
Journal ChemSusChem
Print ISSN 1864-5631
Electronic ISSN 1864-564X
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 10
Issue 17
Pages 3352-3357
APA6 Citation Zhang, H., Luo, X., Shi, K., Wu, T., He, F., Zhou, S., …Peng, C. (2017). Highly Efficient Sulfonic/Carboxylic Dual-Acid Synergistic Catalysis for Esterification Enabled by Sulfur-Rich Graphene Oxide. ChemSusChem, 10(17), 3352-3357. https://doi.org/10.1002/cssc.201700950
DOI https://doi.org/10.1002/cssc.201700950
Keywords Dual-acid catalyst, solid acid, esterification, heterogeneous catalysis
Publisher URL http://onlinelibrary.wiley.com/doi/10.1002/cssc.201700950/abstract
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information This is the peer reviewed version of the following article: H. Zhang, X. Luo, K. Shi, T. Wu, F. He, S. Zhou, G. Z. Chen, C. Peng, ChemSusChem 2017, 10, 3352., which has been published in final form at http://dx.doi.org/10.1002/cssc.201700950. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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