In the US, the health reference level for chlorate (ClO3-) is set at 0.21 milligrams per liter (mg/L) and the minimum reporting level at 0.02 mg/L. Although ClO3- contamination challenge for water systems has been recognized, research efforts for ClO3- reduction are limited. Platinum group metal (PGM) catalyzed hydrogenation provides a clean degradation route. However, most reported ClO3- reduction catalysts exhibit maximum activity in acidic conditions or require higher dosage (10 - 80X) of the catalyst.
Prof. Jinyong Liu and his research team have developed a novel catalyst through the use of rational chemistry and simple engineering approach. The developed ruthenium (Ru) on palladium-carbon supports (Pd/C) makes it possible to treat ClO3- contamination under various water conditions. The facile method yields catalysts that demonstrat robustness and unprecedented performance.
Profiles and turnover factor (TOF0) for 1 millimolar (mM) ClO3- reduction by three different catalysts.
pH dependence of the Ru-Pd/C, Ru/C. First-order rate constants are normalized by the loading of PGM.
Water treatment applications such as:
perchlorate, chlorate, chlorate contamination, catalyst, platinum group metals, ruthenium, palladium, water treatment, wastewater