Chromatographie durch Innovation

SiliaCat Produktgruppe- heterogene Katalysatoren für die Synthese

Für die Katalyse von Übergangsmetallkatalysierten Kupplungsreaktionen sowie die Oxidation von Alkoholen bieten die neuen SiliaCat Produkte eine effektive Lösung. Diese Silika gebundenen heterogenen Katalysatoren zeigen eine hohe Effektivität, sind recyclebar und können durch einfache Filtration aus der Reaktionslösung entfernt werden.

Mögliche Reaktionstypen:

Coupling
Debenzylation
Hydrosilylation
Hydrogenation
Oxidation

SiliaCat Heterogeneous Catalysts Portfolio*
SiliaCat Dpp-Pd \| R390-100
Structure
Brief Description	The significant costs associated with precious metal catalysts and their tendency to remain in organic products has generated interest for solutions that increase reactivity and can enable the recovery and reuse of these metals. SiliaCat DPP-Pd is a unique diphenylphosphine palladium (II) heterogeneous catalyst made from a leach-resistant organoceramic matrix.
Typical Applications	Suzuki, Heck, Sonogashira,, Kumada, Stille
SiliaCat Typical Characteristics	Color	Yellow
	Endcapping	Yes
	Molecular Loading	≥ 0.2 mmol/g
	Typical Tap Density	415 g/L
	Solvent Compatibility	All solvents, aqueous and organic
	Prolonged Storage	Keep dry
SiliaCat Pd⁰ \| R815-100
Structure
Brief Description	SiliaCat Pd⁰ is 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.
Typical Applications	Suzuki, Heck Sonogashira, Kumada, Stille, Selective debenzylation, Selective hydrogenation
SiliaCat Typical Characteristics	Color	Dark brown to black
	Endcapping	Yes
	Molecular Loading	-
	Typical Tap Density	-
	Solvent Compatibility	All solvents, aqueous and organic
	Prolonged Storage	Keep cool (< 8 °C) Under Argon
SiliaCat Pt⁰ \| R820-100
Structure
Brief Description	SiliaCat Pt⁰ is 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.
Typical Applications	Selective reduction of nitroarenes, Hydrosilylation
SiliaCat Typical Characteristics	Color	Dark brown to black
	Endcapping	Yes
	Molecular Loading	-
	Typical Tap Density	-
	Solvent Compatibility	All solvents, aqueous and organic
	Prolonged Storage	Keep dry Under Argon
SiliaCat TEMPO \| R723-100
Structure
Brief Description	SiliaCat TEMPO is 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
Typical Applications	Oxidation of alcohols or Aldehydes
SiliaCat Typical Characteristics	Color	Orange
	Endcapping	Yes
	Molecular Loading	≥ 0.70 mmol/g
	Typical Tap Density	639 g/L
	Solvent Compatibility	All solvents, aqueous and organic
	Prolonged Storage	Keep dry