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

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.

Citation

Zhang, H., Luo, X., Shi, K., Wu, T., He, F., Zhou, S., Chen, G. Z., & 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

• Journal Article Type: Article
• Acceptance Date: Aug 8, 2017
• Online Publication Date: Aug 16, 2017
• Publication Date: Sep 11, 2017
• Deposit Date: Sep 11, 2017
• Publicly Available Date: Aug 17, 2018
• Journal: ChemSusChem
• Print ISSN: 1864-5631
• Electronic ISSN: 1864-564X
• Publisher: Wiley
• Peer Reviewed: Peer Reviewed
• Volume: 10
• Issue: 17
• Pages: 3352-3357
• DOI: https://doi.org/10.1002/cssc.201700950
• Keywords: Dual-acid catalyst, solid acid, esterification, heterogeneous catalysis
• Public URL: https://nottingham-repository.worktribe.com/output/882109
• Publisher URL: http://onlinelibrary.wiley.com/doi/10.1002/cssc.201700950/abstract
• 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.
• Contract Date: Sep 11, 2017