Oxidation of aliphatic and aromatic sulfides using sulfuric acid

James Nehlsen, Jay Burton Benziger, Yannis Kevrekidis

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

Sulfuric acid is proposed as an inexpensive oxidant for use in the oxidative desulfurization (ODS) of petroleum. The oxidative extraction of thiophene, tetrahydrothiophene, and dibutyl sulfide by concentrated sulfuric acid in a two-liquid-phase reactor is demonstrated. The reaction proceeds rapidly at room temperature at sulfide concentrations greater than ∼100 ppm S and yields sulfoxides, sulfonates, and other oxidized sulfur species as products. The oxidized sulfur species are effectively extracted into the acid phase. The reactions are first-order in sulfide at high acid concentrations and first-order in acid at lower acid concentrations. This technique might be able to reduce the load on hydrodesulfurization (HDS) or ODS reactors by pretreating high-sulfur feed streams.

Original languageEnglish (US)
Pages (from-to)518-524
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Volume45
Issue number2
DOIs
StatePublished - Jan 18 2006

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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