Catalyst, and preparation method and application thereof

Abstract

The invention relates to a catalyst, and a preparation method and an application thereof. The catalyst comprises active ingredients and a carrier, the active ingredients comprise copper ions, aluminumions and zinc ions, and a carrier is a gel prepared from orthosilicic acid. The catalyst of the invention converts physical loading between the active ingredients of the catalyst and the catalyst carrier in conventional catalysts into chemical loading. The combination mode of the active ingredients and the composition ratio of the active ingredients to the carrier are optimized, so the catalyst prepared by the method provided by the invention has a high catalytic activity, a good stability and a good weather resistance. The catalyst of the invention has excellent application properties in a catalytic methanol reforming hydrogen production reaction.

Description

technical field [0001] The present invention relates to the technical field of catalyst improvement, in particular to a catalyst and its preparation method and application. Background technique [0002] Hydrogen production by steam reforming of methanol has high hydrogen production efficiency, clean and pollution-free production process, and controllable equipment size; it is easy to integrate with hydrogen refueling stations, fuel cells, etc. Copper catalyst is one of the most widely used catalysts in methanol reforming field. However, it will be inactivated due to the change of the carrier structure during use, which in turn will cause an increase in the carbon monoxide content in the reformed gas, affecting its subsequent use. [0003] In addition, most of the currently used catalyst supports physically attach the copper catalyst to the surface of the porous material. The adhesion is poor, the distribution is uneven, and the surface area is relatively reduced, resulting ...

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Problems solved by technology

However, it will be inactivated due to changes in the carrier structure during use, which will cause an increase in the carbon monoxide content in the reformed gas, affecting its subsequent use

[0003] In addition, at present, most of the catalyst supports used physically attach the copper catalyst to the surface of the porous material. The adhesion is poor, the distribution is uneven, and the surface area will be relatively reduced, resulting in a decrease in the catalytic efficiency of the catalyst.