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Platinum asbestos catalyst ball for gas-phase hydrogenation and preparation method thereof

A platinum asbestos and catalyst technology, applied in the field of platinum asbestos catalyst preparation, can solve the problems of loss, cumbersome steps, inconvenient handling, etc., and achieve the effects of improving efficiency, increasing specific surface area, and saving materials

Active Publication Date: 2018-12-21
陕西瑞科新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Platinum asbestos is widely used as a catalyst for gas-phase hydrogenation due to its good catalytic effect. However, the steps for preparing platinum asbestos in the prior art are relatively cumbersome, and the produced platinum asbestos is gray-black fibrous, which is inconvenient to take and place, and is likely to cause greater loss

Method used

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  • Platinum asbestos catalyst ball for gas-phase hydrogenation and preparation method thereof
  • Platinum asbestos catalyst ball for gas-phase hydrogenation and preparation method thereof
  • Platinum asbestos catalyst ball for gas-phase hydrogenation and preparation method thereof

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preparation example Construction

[0042] The present invention also provides a method for preparing platinum asbestos catalyst balls for gas-phase hydrogenation, the specific steps are as follows:

[0043]1. Combine the asbestos strip bracket with the asbestos strip 3 and the protective ball 4, first soak it in an alkaline solution for 10-20 minutes, the alkaline solution is a sodium hydroxide solution with a mass concentration of 5-20%, and then use a mass concentration Soak in 5-20% nitric acid solution for 10-20 minutes, wash with water until neutral, soften the asbestos strip 3 and make the inside of the asbestos strip 3 more fluffy, which can greatly increase the specific surface area of ​​the asbestos strip 3, which is beneficial to the active components Adsorption, and then wash with warm water at 45°C to fully wash away the residual alkaline solution or nitric acid solution;

[0044] 2. Immerse the asbestos strip holder with the asbestos strip 3 and the protective ball 4 combination in the chloroplatin...

Embodiment 1

[0049] 1. Combine the asbestos strip bracket with the asbestos strip 3 and the protective ball 4, first soak it in alkaline solution for 10 minutes, the alkaline solution is a sodium hydroxide solution with a mass concentration of 5%, and then use a mass concentration of 5% Soak in nitric acid solution for 10 minutes, wash with water until neutral, the asbestos strip 3 can be softened, and the inside of the asbestos strip 3 can be relatively fluffy, which can greatly increase the specific surface area of ​​the asbestos strip 3, which is beneficial to the adsorption of active components. After that, the use temperature is 45 Wash with warm water at ℃ to fully remove residual alkaline solution or nitric acid solution;

[0050] 2. Immerse the asbestos strip bracket with the asbestos strip 3 and the protective ball 4 in a chloroplatinic acid solution with a mass concentration of 3%, raise the temperature to 40°C, and keep stirring for 30 minutes at the same time, so that the chloro...

Embodiment 2

[0054] 1. Combine the asbestos strip support with the asbestos strip 3 and the protective ball 4, first soak it in alkaline solution for 20 minutes, the alkaline solution is a sodium hydroxide solution with a mass concentration of 20%, and then use a mass concentration of 20% Soak in nitric acid solution for 20 minutes, wash with water until neutral, the asbestos strip 3 can be softened, and the inside of the asbestos strip 3 is relatively fluffy, which can greatly increase the specific surface area of ​​the asbestos strip 3, which is beneficial to the adsorption of active components. After that, the use temperature is 45 Wash with warm water at ℃ to fully remove residual alkaline solution or nitric acid solution;

[0055] 2. Immerse the asbestos strip bracket with the asbestos strip 3 and the protective ball 4 in the chloroplatinic acid solution with a mass concentration of 5%, raise the temperature to 40°C, and keep stirring for 50 minutes at the same time, so that the chloro...

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Abstract

The invention discloses a platinum asbestos catalyst ball for gas-phase hydrogenation. The platinum asbestos catalyst ball comprises an asbestos strip main strut, auxiliary struts, asbestos strips anda protection ball; one ends of the auxiliary struts are fixedly connected to the main strut, and the other ends of the auxiliary struts are fixedly connected with a plurality of asbestos strips uniformly distributed; the protection ball is an internally hollow spherical shell, and a plurality of vent holes uniformly distributed are formed on the shell of the protection ball; fixed holes matched with the main strut are formed at both upper and lower ends of the protection ball; the protection ball sleeves the asbestos strip main strut through the fixed holes. The invention further discloses apreparation method of the platinum asbestos catalyst ball for gas-phase hydrogenation.

Description

technical field [0001] The invention belongs to the technical field of platinum asbestos catalyst preparation, and in particular relates to a platinum asbestos catalyst ball used for gas-phase hydrogenation; the invention also relates to a preparation method of the platinum asbestos catalyst ball. Background technique [0002] Platinum asbestos is asbestos with very fine platinum powder attached to the surface. Generally, asbestos is mixed with chloroplatinic acid (H 2 PtCl 6 ) in a dilute solution, and then put it on the flame to burn, the chloroplatinic acid is heated and decomposed to produce very fine platinum powder, which is attached to the surface of asbestos. Because the platinum powder is very fine, its surface area is large, and the catalytic action requires Many times stronger than ordinary platinum powder. It is generally used as an absorbent for hydrogen in gas analysis, for example, for gas-phase hydrogenation of benzene or pyridine. [0003] Gas-phase hydro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/56B01J35/10
CPCB01J23/002B01J23/56B01J35/61
Inventor 李伟峰周淑雁杜冰
Owner 陕西瑞科新材料股份有限公司
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