Nano palladium supported amphipathic carbon sphere catalyst and application thereof to aqueous-phase Heck reaction

A catalyst and amphiphilic technology, which is used in the field of amphiphilic carbon spheres catalyzing water-phase Heck reaction, can solve the problems of difficult contact between reaction substrates and catalysts, reducing the contact area between non-polar surfaces and water, and difficult for water to contact each other. , to achieve the effect of increased contact area, convenient recycling and low cost
CN104014334AInactive Publication Date: 2014-09-03UNIVERSITY OF CHINESE ACADEMY OF SCIENCES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIVERSITY OF CHINESE ACADEMY OF SCIENCES
Publication Date
2014-09-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of green catalysis, and particularly relates to a method for catalyzing an aqueous-phase Heck reaction in the presence of palladium nano particle supported amphipathic carbon spheres. The method is characterized in that the palladium nano particle supported carbon sphere catalyst (Pd / PHCSs) is synthesized in situ by adopting carbon spheres (PHCSs), which are synthesized in a hydrothermal method, as a carrier, PdCl2 as a precursor and ethanol as a solvent and a reduction agent. The catalyst can be applied to the aqueous-phase Heck reaction and is high in catalytic activity; moreover, the synthesis process of the catalyst is simple, and the catalyst is recyclable and is free of environment pollution.
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Description

technical field

[0001] The invention belongs to the technical field of green catalysis, and in particular relates to a method for catalyzing an aqueous phase Heck reaction using amphiphilic carbon spheres loaded with palladium nanoparticles. Background technique

[0002] The Heck reaction refers to the coupling reaction of unsaturated halogenated hydrocarbons and alkenes to generate substituted alkenes under the catalysis of strong base and palladium. It is an important class of reactions for forming carbon-carbon bonds in organic synthesis. In recent decades, the Heck reaction has made important achievements in the field of homogeneous catalysis. In the homogeneous system, the catalyst species of palladium are all dissolved in the reaction system, so that they can fully contact with the reactants and obtain high reactivity and selectivity. However, the large-scale application of palladium catalysts is limited due to the difficulty in separation and recovery of catalysts an...

Claims

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