A kind of preparation method of highly selective dopamine platinum carbon catalyst

A dopamine platinum and carbon catalyst technology, applied in the field of catalysis, can solve the problems of low activity, short service life, poor selectivity, etc., and achieve the effect of high activity, long service life and uniform distribution

Inactive Publication Date: 2018-03-06
杭州创培信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a highly selective dopamine platinum carbon catalyst with an alumina framework carrier. The present invention not only solves the problems of low activity, poor selectivity and short service life of the traditional precipitation method and impregnation method, but also maintains the Similar particle size distribution and particle size to colloidal platinum catalysts

Method used

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Comparison scheme
Effect test

Embodiment 1

[0029] The present invention provides a kind of preparation method of highly selective dopamine platinum carbon catalyst, it is characterized in that, the steps of its preparation method are as follows:

[0030] 1) Preparation of platinum precursor solution

[0031] Accurately take by weighing 394.74g of chloroplatinic acid (platinum content 38.0% in chloroplatinic acid), add deionized water to dilute the platinum to 50g / L, and add 150g castor oil (lubricant) in the chloroplatinic acid solution, under stirring, use 5% Na2CO 3 The solution adjusts its pH to 1 to obtain a platinum precursor solution;

[0032] 2) Preparation of dopamine precursor solution

[0033] The raw materials used are absolute ethanol, dopamine, sodium hydroxide, deionized water, and polyvinylpyrrolidone. Sodium and polyvinylpyrrolidone were uniformly mixed to prepare solution B; under the condition of vigorous stirring, solution A was added dropwise to solution B, and the stirring was stopped after the ...

Embodiment 2

[0045] The present invention provides a kind of preparation method of highly selective dopamine platinum carbon catalyst, it is characterized in that, the steps of its preparation method are as follows:

[0046] 1) Preparation of platinum precursor solution

[0047] Accurately take by weighing chloroplatinic acid 394.74g (platinum content 38.0% in the chloroplatinic acid), add deionized water to dilute the platinum to 30g / L, and add 300g fatty acid amide (lubricant) in the chloroplatinic acid solution, under stirring, Use 15% NaHCO 3 The solution adjusts its pH to 2.5 to prepare a platinum precursor solution;

[0048] 2) Preparation of dopamine precursor solution

[0049] The raw materials used are absolute ethanol, dopamine, sodium hydroxide, deionized water, and triethylhexyl phosphoric acid. The steps are to vigorously stir the absolute ethanol, and dropwise add dopamine to obtain solution A. Mix deionized water, absolute ethanol , sodium hydroxide, and triethylhexyl pho...

Embodiment 3

[0061] The present invention provides a kind of preparation method of highly selective dopamine platinum carbon catalyst, it is characterized in that, the steps of its preparation method are as follows:

[0062] 1) Preparation of platinum precursor solution

[0063] Accurately take by weighing chloroplatinic acid 394.74g (platinum content 38.0% in the chloroplatinic acid), add deionized water to dilute the platinum to 30g / L, and add 300g fatty acid amide (lubricant) in the chloroplatinic acid solution, under stirring, Use 15% NaHCO 3 The solution adjusts its pH to 2.5 to prepare a platinum precursor solution;

[0064] 2) Preparation of dopamine precursor solution

[0065] The raw materials used are deionized ethanol, dopamine, sodium hydroxide, deionized water and sodium lauryl sulfate. The steps are to vigorously stir the deionized ethanol, add dopamine dropwise to obtain solution A, and deionized water, dehydrated ethanol , sodium hydroxide, and sodium lauryl sulfate were...

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Abstract

The invention discloses a preparation method of a high-selectivity dopamine platinum carbon catalyst. The dopamine platinum carbon catalyst is prepared from a dopamine precursor solution and a platinum precursor solution doped with activated carbon as raw materials. The preparation method of the invention not only solves the problems of low activity, poor selectivity and short service life of the traditional precipitation and impregnation methods, but also maintains the particle size distribution and particle size similar to the colloidal platinum catalyst.

Description

technical field [0001] The invention belongs to the technical field of catalysis, and relates to a method for preparing a high-selectivity dopamine platinum carbon catalyst with a specific alumina framework carrier. Background technique [0002] Platinum group metal catalysts have good catalytic performance, occupy an extremely important position in petrochemical and organic synthesis, and are widely used in reactions such as hydrogenation, dehydrogenation, oxidation, reduction, isomerization, aromatization, and cracking. The catalytic performance of the catalyst, in addition to depending on the composition and content of the catalyst, is also closely related to the preparation method and process conditions of the catalyst. The same raw material, the same composition and content, different preparation methods, the activity and thermal stability of the catalyst There can be big differences. Therefore, it is of great significance to study the preparation method of highly sele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22
Inventor 苏琳郭小川
Owner 杭州创培信息科技有限公司
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