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

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

Research output: Journal PublicationArticlepeer-review

17 Citations (Scopus)
1 Downloads (Pure)

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.

Original languageEnglish
Pages (from-to)3352-3357
Number of pages6
JournalChemSusChem
Volume10
Issue number17
DOIs
Publication statusPublished - 11 Sep 2017

Keywords

  • dual-acid catalyst
  • esterification
  • graphene oxide
  • heterogeneous catalysis
  • solid acid

ASJC Scopus subject areas

  • Environmental Chemistry
  • Chemical Engineering (all)
  • Materials Science (all)
  • Energy (all)

Fingerprint

Dive into the research topics of 'Highly Efficient Sulfonic/Carboxylic Dual-Acid Synergistic Catalysis for Esterification Enabled by Sulfur-Rich Graphene Oxide'. Together they form a unique fingerprint.

Cite this