Method for preparing catalyst and application thereof

Abstract

The invention provides a catalyst preparation method. The procedure is that:1} a solution containing soluble compounds with loaded components is prepared; 2} the solution produced in procedure 1 is sprayed on a rolling carrier or a carrier preloading one or a plurality of components and the carrier is heated in the process of spraying; 3) the product produced in procedure 2 is dried or roasted; and 4) the procedures 2 and 3 are repeated. The active components of the catalyst prepared in the method of the invention contain group eight elements. When the catalyst preparation method of the invention is applied in the hydrocarbon preparation procedure from mixed gas of carbon monoxide and hydrogen, the active components of the catalyst prepared contain group eight elements. The invention provides a better shell catalyst preparation technique to solve the problem of internal diffusion in certain chemical conversion procedures. The catalyst can be applied in hydrocarbon preparation reactionof gas mixture of carbon monoxide and hydrogen.

Description

technical field The invention relates to a method for preparing a catalyst. The present invention also relates to a catalyst prepared by the above method and a process for producing hydrocarbons from a mixture of carbon monoxide and hydrogen using the catalyst. technical background Solid catalysts are used in many chemical transformation processes. Currently commonly used solid catalyst preparation methods include impregnation method, precipitation method, crystallization method, sol-gel method and simple roasting method. The composition of the catalyst usually includes catalytically active components or simultaneously contains auxiliary components or simultaneously contains supports. Carriers are generally solid particles with a porous structure. Supported catalysts containing supports are usually prepared by conventional impregnation methods. When preparing supported catalysts by impregnation, it is generally hoped that the supported components can be distributed as un...

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Problems solved by technology

Therefore, compared with the eggshell catalyst prepared by the solution of the active component, this method of preparing the active component powder reduces the utilization efficiency of the active component on the one hand, and the active component is washed away by the air flow during use. Powder is also easier to shed from the surface of inert solid particles

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