Novel aqueous chelating agents for catalytic oxidation of hydrogen sulfide to sulfur by air

Guoxiong Hua, Qingzhi Zhang, Derek McManus, Alex M. Z. Slawin, J. Derek Woollins, Alexandra Martha Zoya Slawin

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Six phosphorus-containing analogues of nitrilotriacetic acid (NTA) or ethylenedinitrilotetraacetic acid (EDTA) form stable Fe(III) complexes which have been tested as catalysts for the oxidation of hydrogen sulfide. Ligand 4, phosphonomethyliminodiacetic acid (NTAP), was found to be comparable with NTA in efficiency of catalytic activity such as the conversion of hydrogen sulfide to sulfur, half-life of ligand, consumption of ligand per kg of sulfur product. A quantitative analytical method of phosphorus-containing ligand in the absorbed solution has been successfully established by applying P-31-{H-1} NMR.

Original languageEnglish
Pages (from-to)157-175
Number of pages19
JournalMain Group Chemistry
Volume4
Issue number2
DOIs
Publication statusPublished - 2005

Keywords

  • Iron chelates
  • Hydrogen sulfide
  • Sulfur
  • Nitrilotriacetic acid (NTA)
  • Phosphonomethyliminodiacetic acid (NTAP)
  • Cyclic voltammogram
  • Catalytic oxidation

Fingerprint

Dive into the research topics of 'Novel aqueous chelating agents for catalytic oxidation of hydrogen sulfide to sulfur by air'. Together they form a unique fingerprint.

Cite this