SiliaCat (Heterogeneous Catalysts)
SiliaCat (Heterogeneous Catalysts) from SiliCycle
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.
SiliaCat is a leach-proof organoceramic matrix with high catalyst loading and surface area that provides high turn over number (TON).
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- Features
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- High stability
- Rigid & Porous Structure (no swelling)
- Compatibility with a wide range of solvents
- Ease of use: no swelling or static charge
- Leach-proof
- High turnover number (TON)
- Fast kinetics
- Accurate loading
- Specifications
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Inspired by the ORganically MOdified SILica (ORMOSIL) technology, the SiliaCat family is composed by new and innovative catalysts. Resulting from the co-condensation of two organosilane monomers by the sol-gel process, the hybrid organic-inorganic materials present the highest stability and reactivity available with heterogeneous catalysts. Furthermore, the high cross linked framework presents an unmatched resistance, significantly better than the usual post-synthesis functionalized ligand.
SiliaCat DPP-Pd - a unique diphenylphosphine palladium (II) heterogeneous catalyst made from a leach-resistant organoceramic matrix.
SiliaCat Pd0 - a new series of patent-protected sol–gel-entrapped Pd nanocatalysts. It is made from highly dispersed Pd nanoparticles (uniformly in the range 4.0–6.0 nm) encapsulated within an organosilica matrix.
SiliaCat Pt0 - made of organosilica physically doped with nanostructured platinum (0), and is both stable and efficient. This catalyst was successfully prepared by a novel and simple sol-gel route. In the new procedure, Pt nanoparticles (uniformly in the range 1.7–3.15 nm) are encapsulated via an alcohol-free sol-gel process typical of enzyme sol-gel encapsulation.
SiliaCat TEMPO - a new oxidizing catalyst made from a proprietary class of organosilica-entrapped radicals. This encapsulation process confers enhanced reactivity and properties. The leach-resistant organoceramic matrix makes SiliaCat TEMPO highly efficient and selective compared to homogeneous TEMPO reagents. It also has a superior performance compared to polymer-supported TEMPO and silica-supported TEMPO in terms of both selectivity and stability. With SiliaCat TEMPO, no activation is required prior to use and selective aldehyde vs acid oxidation is possible.
U.S.Patent: 6,797,773 B1,2004 - Literature