Catalytic Perchlorate Reduction Using Iron: Mechanistic Insights and Improved Catalyst Turnover

Michael J. Drummond, Tabitha J. Miller, Courtney L. Ford, Alison R. Fout

Research output: Contribution to journalArticle

Abstract

Perchlorate is a non-coordinating and kinetically inert anion commonly used in solid rocket fuels and explosives. Upon introduction to the environment, it is a pervasive groundwater pollutant that poses remediation challenges. There remain few homogeneous systems capable of deoxygenating perchlorate to chloride, and the reported catalysts suffer from deactivation as the concentration of chloride increases during catalysis. This report improves the turnover number of perchlorate reduction by an iron catalyst containing a secondary coordination sphere by an order of magnitude. The use of a zinc reagent mitigates chloride inhibition and promotes catalyst turnover. Additionally, the initial rate of perchlorate reduction was examined using time-resolved UV-visible spectroscopy, furnishing insights into the mechanism of perchlorate reduction.

Original languageEnglish (US)
Pages (from-to)3175-3182
Number of pages8
JournalACS Catalysis
Volume10
Issue number5
DOIs
StatePublished - Mar 6 2020

Keywords

  • biomimetic
  • improved turnover number
  • iron catalysis
  • Irving-Williams series, perchlorate
  • oxyanion reduction
  • secondary coordination sphere
  • solvent effects

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Fingerprint Dive into the research topics of 'Catalytic Perchlorate Reduction Using Iron: Mechanistic Insights and Improved Catalyst Turnover'. Together they form a unique fingerprint.

  • Cite this