SiliaCat®- Heterogeneous Catalysts
SiliaCat is the new heterogeneous catalysts family from Silicycle. It is made by using an innovative technology that confers these materials advantageous properties for catalysis. SiliaCat is an organically modified silica made by a proprietary encapsulation process resulting in a new chemical matrix structure.1
SiliaCat is a leach-proof organoceramic matrix with high catalyst loading and surface area that provides high turn over number (TON).
1Org. Process Res. Dev. 11 (2007) 766
Properties
Like any other silica-based material, SiliaCat presents the following:
- Easy to handle (free flowing, no static charge)
Easy to weigh and handle since silica does not carry a static charge and is always free flowing. Its high density makes it suitable for small volume work. It does not require extensive -washing for high recoveries and will not stick to glassware. It is amenable to automation.
- Robust (mechanically & thermally stable)
Works well with overhead stirring and can stand very high temperature; suitable for microwave synthesizers.
- Rigid & porous structure
- No swelling
- Solvent independent
Silica neither shrinks nor swells in any solvent. - Fast kinetics
The rate of the reaction is not controlled by the diffusion in and out of the polymer (or other support). SiliaCat does not dictate the solvent of the reaction.
- Accurate loading
- Lot-to-lot reproducibility
Advantages
The organosilica-based matrix of the SiliaCat offers the following catalyst advantages:
- Accurate catalyst loading
- Recyclability
- Leach-proof
- Fast kinetics
- High turnover
- Low catalytic amount required (< 1mol%)
3 Item(s)
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SiliaCat® Heterogeneous Catalysts DPP-Pd
The significant costs associated with precious metal catalysts and their undesired tendency to remain in organic products has generated interest for an increase in reactivity and ways to recover and reuse these metals. SiliaCat® DPP-Pd is a unique diphenylphosphine palladium (II) heterogeneous catalysts made from a leach-resistant organoceramic matrix.
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SiliaCat® Heterogeneous Catalysts S-Pd
The significant costs associated with precious metal catalysts and their undesired tendency to remain in organic products has generated interest for an increase in reactivity and ways to recover and reuse these metals. SiliaCat® S-Pd is a unique thiol based palladium (II) heterogeneous catalysts made from a leach-resistant organoceramic matrix.
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SiliaCat® Heterogeneous Catalysts TEMPO
SiliaCat® TEMPO is a heterogeneous catalyst/reagent made from a proprietary class of organosilica-entrapped radicals suitable for the selective oxidation of delicate substrates into valued carbonyl derivatives.
3 Item(s)
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