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A kind of ternary metal catalyst and its preparation method and its application in electrolyzing heavy water to prepare deuterium gas

A ternary metal and catalyst technology, applied in electrolysis components, electrolysis process, electrodes, etc., can solve problems such as the difficulty of electrolyzing heavy water, achieve good stability of deuterium analysis, reduce production cost, and evenly distribute

Active Publication Date: 2022-01-25
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production of deuterium gas by electrolysis of heavy water is similar to that of hydrogen production by electrolysis of water, but there are differences. Electrolysis of heavy water is more difficult, which requires the invention of a new catalyst to reduce the difficulty of the reaction

Method used

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  • A kind of ternary metal catalyst and its preparation method and its application in electrolyzing heavy water to prepare deuterium gas
  • A kind of ternary metal catalyst and its preparation method and its application in electrolyzing heavy water to prepare deuterium gas
  • A kind of ternary metal catalyst and its preparation method and its application in electrolyzing heavy water to prepare deuterium gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Concentration of 10 M nitric acid solution pretreatment activated carbon, including the following steps:

[0034] Weigh 1g of activated carbon and add it to 200ml of nitric acid solution with a concentration of 10M, stir at room temperature for 3 h, mix thoroughly, and 2 Heating and stirring treatment at 50°C for 8 hours under the protection of the environment, and then the activated carbon was taken out from the nitric acid solution by centrifugation, and the wet activated carbon was further added to the washing solution, and the activated carbon was washed by centrifugation. The rotational speed of the method is 5000 rpm, the centrifugation time is 5 min, the washing solution is a mixture of water and ethanol, the volume ratio of water and ethanol is 9:1, and the wet activated carbon is washed to pH>6. The washed activated carbon was dried in a vacuum oven at 80° C. for 8 hours to obtain activated carbon A containing oxygen functional groups.

Embodiment 2

[0036] Concentration of 14 M nitric acid solution pretreatment activated carbon, including the following steps:

[0037] Weigh 1g of activated carbon and add it into 500ml of nitric acid solution with a concentration of 14 M, stir at room temperature for 4 h, mix thoroughly, and 2 Heating and stirring treatment at 80°C for 15 h under the protection of the environment, and then the activated carbon was taken out from the nitric acid solution by centrifugation, and the wet activated carbon was further added to the washing solution, and the activated carbon was washed by centrifugation. The centrifugation speed is 10000 rpm, the centrifugation time is 10 min, the washing solution is a mixture of water and ethanol, the volume ratio of water and ethanol is 7:3, and the wet activated carbon is washed to pH>6. The washed activated carbon was dried in a vacuum oven at 80° C. for 8 hours to obtain activated carbon B containing oxygen functional groups.

[0038] The SEM figure and the ...

Embodiment 3

[0040] Concentration of 16 M nitric acid solution pretreatment activated carbon, including the following steps:

[0041] Weigh 1 g of active carbon and add it into 1000 ml of nitric acid solution with a concentration of 16 M, stir at room temperature for 5 h, mix thoroughly, and 2 Heating and stirring treatment at 100°C for 24 h under the protection of the environment, and then the activated carbon was taken out from the nitric acid solution by centrifugation, and the wet activated carbon was further added to the washing solution, and the activated carbon was washed by centrifugation. The centrifugation speed is 15000 rpm, the centrifugation time is 15 min, the washing liquid is a mixture of water and ethanol, the volume ratio of water and ethanol is 1:1, and the wet activated carbon is washed to pH>6. The washed activated carbon was dried in a vacuum oven at 80° C. for 8 hours to obtain activated carbon C containing oxygen functional groups.

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Abstract

The invention discloses a ternary metal catalyst and its preparation method and its application in the preparation of deuterium gas by electrolysis of heavy water. The ternary metal catalyst is composed of a carrier and an active component loaded on the carrier. The active carbon of oxygen functional group, active component is ternary metal Pd-Pt-Ir, the loading total amount of ternary metal Pd-Pt-Ir is 1~5wt%, is preferably 3wt%; The ternary metal Pd-Pt-Ir The mass ratio is 1:0.7~1.5:0.7~1.5, preferably 1:1:1. The preparation method of the catalyst of the present invention is green and environment-friendly, the catalyst with low active component loading reduces the production cost, the active component of the ternary metal Pd-Pt-Ir is evenly distributed on the activated carbon carrier, and has good catalytic heavy water electrolysis to prepare deuterium gas performance.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a ternary metal catalyst, a preparation method thereof and an application in preparing deuterium gas by electrolyzing heavy water. Background technique [0002] At present, the technology of electrolyzing water to produce hydrogen is relatively mature, and its production efficiency of hydrogen is very high. It provides a good solution to the safety problems of hydrogen transportation and greatly facilitates the use of hydrogen. As an isotope of hydrogen, deuterium has received more and more favor from researchers in recent years. With the development of science and technology and the continuous improvement of people's living standards, the use of deuterium has gradually expanded from the military field to the civilian field. The effective use of deuterium can not only improve our quality of life, but more importantly, it can promote the process of social ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/054C25B11/065C25B11/081C25B11/089C25B1/04
CPCC25B1/04Y02E60/36
Inventor 王建国张世杰包志康丁磊季文凯
Owner ZHEJIANG UNIV OF TECH