Sinter-resistant low-cost catalysts manufactured by solution-based nanoparticle coating processes

Abstract

Catalysts that are resistant to high-temperature sintering and methods for preparing such catalysts that are resistant to sintering at high temperatures are provided. The catalysts include a metal nanoparticle bound to a metal oxide support, where the metal nanoparticle and support are coated with a porous metal oxide coating layer. The catalyst is prepared by contacting a metal nanoparticle bound to a metal oxide support with a solution of metal salts, drying the solution of metal salts, and calcining the metal salts to generate a porous metal oxide coating on the metal nanoparticle and metal oxide support.

Description

technical field

[0001] The present disclosure relates to catalysts resistant to sintering at high temperatures and low cost methods for preparing catalysts resistant to sintering at high temperatures. Background technique

[0002] This section provides background information related to the present invention which is not necessarily prior art.

[0003] Metal nanoparticles can form an integral part of the active sites of catalysts used in various applications such as for the production of fuels, chemicals and pharmaceuticals, and for emission control from automobiles, factories and power plants. Metal nanoparticles are often coupled to support materials due to their tendency to aggregate, which reduces their surface area and reduces the accessibility of active sites. The support physically separates the metal nanoparticles to prevent their aggregation and serves to increase their surface area and enhance the accessibility of the active sites. Thus, a catalyst system typicall...

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