How is the TAML® catalyst supplied?
The catalyst is supplied as a red-orange powder.
Is the catalyst soluble in water?
Yes. The catalyst is highly soluble in water, at least 25 g/100 mL.
What is the typical catalyst concentration range?
Most applications use between 0.5 – 5 micromolar TAML® [approx. 1 – 10 ppm]. Catalyst concentration depends on the quantity (concentration) of the target contaminant. GreenOx will work with the customer to determine the concentration of catalyst needed for their application.
What is the color of a TAML® solution?
Color depends on concentration but they are yellow to red-orange. They are colorless in the typical concentration range 1 – 10 ppm.
What oxidants can be used with the TAML® catalyst?
Hydrogen peroxide, hypochlorite, and organic peroxides all react with the catalyst. We urge use of H2O2 for environmental reasons.
Can the catalyst be stored with hydrogen peroxide?
No. Reaction with H2O2 is essentially instantaneous. However, it can be blended with solid forms of H2O2 like sodium percarbonate and sodium perborate. These blends should be kept dry.
Does the oxidation reaction rely on forming the hydroxyl radical (HO•) as in Fenton chemistry?
All available evidence suggests that the hydroxyl radical is not a part of TAML® oxidation chemistry. This allows the TAML®/H2O2 system to be more selective than Fenton chemistry.
What is the temperature range for the catalyst?
The catalyst has been used over the range 25 – 90 °C (70 – 190 °F) although catalyst lifetime drops significantly above about 50 °C (120 °F).
What pH range is suitable?
The catalyst can be applied in the pH range 7 – 14. The catalyst is most active at pH 10.
Can the catalyst be recovered?
Generally no because the concentration is so low.
What kinds of molecules can be oxidized with the TAML® catalyst and H2O2?
A wide variety of organic molecules can be oxidized with the catalyst and H2O2. A noncomprehensive list can be found on our website under Target Contaminants.