1H NMR-based analytical method: A valid and rapid tool for the epoxidation processes

Tommaso Cogliano, Rosa Turco*, Vincenzo Russo, Martino Di Serio, Riccardo Tesser*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Abstract

The present work aims to propose a 1H NMR-based method for a rapid determination of conversion, yield, and selectivity in the epoxidation of organic substrates. Several experiments were carried out on different substrates and analyzed with both the proposed 1H NMR method and the volumetric traditional ones for a useful comparison. The results obtained with the traditional methods were deeply studied to find a mathematical correlation between the absolute analytical error and the double bond or oxirane ring concentration. The same was done for the conversion and yield derived from the analytical determinations. Finally, the results obtained with the proposed 1H NMR-based method on the epoxidation of methyl-oleate, as a model molecule, were compared with the results obtained by the traditional methods. A good agreement was obtained between the two classes of methods validating the proposed 1H NMR method.

Original languageEnglish
Article number115258
JournalIndustrial Crops and Products
Volume186
DOIs
Publication statusPublished - 15 Oct 2022
MoE publication typeA1 Journal article-refereed

Keywords

  • Epoxidation process
  • Epoxidized oils
  • Epoxy content
  • Iodine value
  • Quantitative H NMR-based analytical method
  • Wijs method

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