Comparison Between SiliaMetS Metal Scavengers and Other Sorbents

Although metal catalysts greatly facilitate many synthetic reactions, once the desired product is obtained, the residual metal must be removed. Chromatography and scavenging are two ways to remove such impurities.

This Application Note offers a comparison of these two different techniques to remove left over metals, herein rhodium, from a cycloisomerization catalytic reaction, and includes a comparison of metal scavengers from different manufacturers.

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Find below the list of SiliCycle's products involved in this Application Note:

SiliaMetS Triamine (R48030B)
Effective for scavenging metals such as Pb, Co, Ru and Pd. Our screening studies have shown it to be the preferred scavenger for Pb. It can also be used as a scavenger for acid chlorides, isocyanates and other electrophiles.
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SiliaMetS Diamine (R49030B)
SiliaMetS is a proven scavenger for metals and electrophiles. It scavenges acids, acid chlorides, anhydrides, aldehydes, isocyanates, and chloroformates. Best metal scavenger for: Cr, Pd, Pt, W & Zn. Good scavenger for: Cd, Co, Cu, Fe, Hg, Ni, Pb, Ru, Sc, Se & V.
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SiliaBond Amine (WAX) (R52030B)
SiliaBond Amine (Si-NH₂) is an effective scavenger of acid chlorides, sulfonyl chlorides, isocyanates and other electrophiles. Si-NH₂ has been shown to be effective metal scavenger and catalyst for Knoevenagel reactions. SiliaBond Amine is also used in chromatography as normal phase sorbent.
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SiliaMetS Imidazole (IMI) (R79230B)
SiliaMetS Imidazole (Si-IMI) is a versatile metal scavenger for a variety of metals under a wide range of conditions and the preferred metal scavenger for iron catalysts. Best scavenger for: Cd, Co, Cu, Fe, Ir, Li, Mg, Ni, Os, W & Zn. Good scavenger for: Cr, Pd & Rh. It can also be used as an amine base in systems that are generally sensitive to basic conditions compared to other SiliaMetS supported bases.
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SiliaFlash Irregular Silica Gels F60, 40 - 63 µm, 60 Å (R10030B)
Particles for Flash Chromatography: silica for flash & low to medium-pressure preparative chromatography. Narrow particle size distribution, Easier to pack and more uniform packing, Superior resolution, Suitable for use with complex matrices
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Comparison Between SiliaMetS Metal Scavengers and Other Sorbents

SiliaMetS Triamine (R48030B)

SiliaMetS Diamine (R49030B)

SiliaBond Amine (WAX) (R52030B)

SiliaMetS Imidazole (IMI) (R79230B)

SiliaFlash Irregular Silica Gels F60, 40 - 63 µm, 60 Å (R10030B)

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