Supported transition metal or transition metal alloy nanocluster catalyst and preparation method and application thereof

A transition metal and alloy nanotechnology, applied in metal/metal oxide/metal hydroxide catalysts, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve problems such as unfavorable environmental protection and noble metal nanocluster aggregation. , to achieve the effect of easy control of structure, high availability and high dispersion
CN101670286AInactive Publication Date: 2010-03-17PEKING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
PEKING UNIV
Publication Date
2010-03-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a transition metal or an alloy nanocluster catalyst and preparation method and application thereof. The invention prepares a supported transition metal or an alloy nanoclustercatalyst by a new method in which a transition metal or an alloy nanocluster which is synthesized by an alkali-polyol method and stabilized by solvent and simple ions is supported on a carbon or oxidecarrier. The content of the transition metal or alloy nanocluster in the catalyst is 0.1-50wt%, and the particle size is 0.7-5nm. The transition metal or alloy nanocluster in the catalyst is distributed on the outer surface or in mesopores and macropores of the carrier material, and the atoms on the surface of the metal or alloy nanocluster have high availability. The catalyst has good catalyticperformance on the hydrogenation of 2,3,5-trimethylquinone, and the catalytic activity of the prepared Pt / Al2O3 and Pt / C supported metal nanocluster catalyst on the hydrogenation of the 2,3,5-trimethylquinone is much higher than that of the corresponding commercially available catalysts.
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Description

technical field

[0001] The invention relates to a class of supported transition metal or transition metal alloy nano-cluster catalysts and a preparation method and application thereof. Background technique

[0002] Transition metal or alloy nanoclusters (i.e., transition metal or alloy nanoparticles with small size and narrow particle size distribution) are a class of nanomaterials with wide application value, and are important structural units for the construction of various functional materials (Y. Wang and Y . Wei, "Metal Nanoclusters" (Chapter) in H.S. Nalwa, Ed., Encyclopedia of Nanoscience and Nanotechnology, Vol.5, 337-367, 2004, American Scientific Publishers). The applicant of the present invention once invented a class of "non-protected" transition metal or alloy nanoclusters and the "alkali-polyol method" for synthesizing such nanoclusters. This kind of metal nanoclusters only uses simple ions and organic solvent molecules as stabilizers. Not only are they small ...

Claims

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