Highly efficient sulfonic/carboxylic dual-acid synergistic catalysis for esterification enabled by sulfur-rich graphene oxide

Zhang, Honglei and Luo, Xiang and Shi, Kaiqi and Wu, Tao and He, Feng and Zhou, Shoubin and Chen, George Z. and Peng, Chuang (2017) Highly efficient sulfonic/carboxylic dual-acid synergistic catalysis for esterification enabled by sulfur-rich graphene oxide. ChemSusChem, 10 (17). pp. 3352-3357. ISSN 1864-564X

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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.

Item Type: Article
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.
Keywords: Dual-acid catalyst, solid acid, esterification, heterogeneous catalysis
Schools/Departments: University of Nottingham Ningbo China > Faculty of Science and Engineering > Department of Chemical and Environmental Engineering
University of Nottingham, UK > Faculty of Engineering > Department of Chemical and Environmental Engineering
Identification Number: 10.1002/cssc.201700950
Depositing User: Eprints, Support
Date Deposited: 11 Sep 2017 09:21
Last Modified: 13 Oct 2017 05:38
URI: http://eprints.nottingham.ac.uk/id/eprint/45689

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