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Method for preparing catalyst and application thereof

A catalyst and catalytic activity technology, applied in catalyst carriers, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of powder falling off of active components, reducing the utilization efficiency of active components, etc., to achieve uniform shell layer, preparation of The process is easy to control and the operation is simple

Active Publication Date: 2008-03-19
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Method for preparing catalyst and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The supporting components of catalyst A are Co and Zr, with spherical SiO 2 As a carrier, the particle size is 1.5-3mm. Catalyst is prepared according to the following steps:

[0054] a) The required amount of zirconium nitrate is loaded on the carrier by a conventional impregnation method, then dried at 383K for 6 hours, and calcined at 573K for 6 hours;

[0055] b) Dissolving the required amount of cobalt nitrate in water to make a solution, the weight ratio of the solution to the carrier is 3:1;

[0056] c) spraying the solution prepared in step b) onto a rolling carrier pre-loaded with Zr components, and the spraying speed of the solution is 1 kg of solution per kg of carrier per hour. The rolling of the carrier during the spraying process is carried out in a rotating container. The angle between the rotation plane of the container and the horizontal plane is 60 degrees. The rotational speed of the container was 30 revolutions per minute. The carrier temperatur...

Embodiment 2

[0059] The supporting components of catalyst B are Co and Zr, and the carrier and preparation process used are the same as catalyst A.

Embodiment 3

[0061] The supporting components of the catalyst C are Co, Ru and Zr, the spherical SiO2 is used as the carrier, and the particle size is 1.5-3 mm. Catalyst is prepared according to the following steps:

[0062] a) Load the required amount of zirconium nitrate on the carrier by conventional impregnation method, then dry at 353K for 6 hours, and bake at 573°C for 6 hours;

[0063] b) the required amount of cobalt nitrate and RuCl 3 Dissolve in water to make a solution, the weight ratio of the solution to the carrier is 3:1;

[0064] c) spraying the solution prepared in step b) onto a rolling carrier pre-loaded with Zr components, and the spraying speed of the solution is 1 kg of solution per kg of carrier per hour. The rolling of the carrier during the spraying process is carried out in a rotating container. The angle between the rotation plane of the container and the horizontal plane is 60 degrees. The rotational speed of the container was 30 revolutions per minute. The ...

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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; 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, which solve the problem of internal diffusion in certain chemical conversion procedures. The catalyst can be applied in hydrocarbon preparation reaction of gas mixture of carbon monoxide and hydrogen.

Description

technical field [0001] 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 [0002] 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 d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J23/84B01J32/00C07C1/04
Inventor 吕元丁云杰王涛朱何俊金明
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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