SiliCycle offers a wide range of scavengers to simplify your purifications.
Scavengers are functionalized silica gels designed to react and bind excess reagents, metal complexes and/or by-products.More Information
The process for using scavengers is outlined in the scheme shown below. In the case of batch processing, the scavenger is added to the reaction mixture after completion. The process relies on chemically driven reactions where the excess reagents and reaction by-products react with and bind to the scavenger. The solution, which now only contains the product of interest, is separated from the silica bound impurities by filtration.
For flow through processing, the scavenger is packed into a column and the reaction mixture is passed through the column until complete scavenging is obtained.
SiliCycle Available Scavengers:
SiliaMetS® DMT (Si-DMT) is the silica bound equivalent of 2,4,6-trimercaptotriazine (trithiocyanuric acid). It is a versatile metal scavenger for a variety of metals including Cd, Co, Ni, Pd, Pt, Rh, and Ru under a wide range of conditions and the preferred metal scavenger for ruthenium catalysts.
TMT has been reported to efficiently remove palladium and heavy metals by precipitation. Unfortunately, its solubility in organic solvents causes problem. SiliaMetS DMT solves this issue and almost all solvents can now be used.
SiliaPrep Metal Scavengers will lower the residual metal concentration of various metal complexes to single digit ppm.