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A kind of co-based catalyst and its application

A catalyst and sulfide technology, applied in electrolysis components, electrodes, electrolysis process, etc., can solve the problems of difficult removal and complicated treatment process, and achieve the effect of good mechanical strength, good cycle stability and low price

Active Publication Date: 2022-05-27
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The focus of purification is to remove impurities and reduce the hydrogen isotope contained in deuterium gas, that is, impurity protium, but it is difficult to remove protium, and the treatment process is very complicated

Method used

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  • A kind of co-based catalyst and its application
  • A kind of co-based catalyst and its application
  • A kind of co-based catalyst and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: the preparation method of a kind of Co-based catalyst (cobalt nitrate and sulfur powder feed ratio is 0.19: 1) is as follows:

[0027] Accurately weigh 0.095g of cobalt nitrate in the mortar, then weigh 0.5g of sulfur powder into it, then add 1ml of absolute ethanol to the mortar, and carry out sufficient grinding operation until the grinding is dry (anhydrous ethanol volatilizes during the grinding process) . The ground and dried samples were dried in a vacuum oven at 60 °C for 12 h, and finally the completely dried powders were placed in a tube furnace under N 2 Under the atmosphere, the temperature was raised from room temperature to 450 °C at a heating rate of 5 °C / min, then kept at 450 °C for 1 h, and finally cooled to room temperature naturally.

Embodiment 2

[0028] Embodiment 2: the preparation method of a kind of Co-based catalyst (cobalt nitrate and sulfur powder feeding ratio is 0.38: 1) is as follows:

[0029] Accurately weigh 0.190g of cobalt nitrate in the mortar, then weigh 0.5g of sulfur powder into it, then add 1ml of absolute ethanol to the mortar, and carry out sufficient grinding operation until the grinding is dry (anhydrous ethanol evaporates during the grinding process. ). The ground and dried samples were dried in a vacuum oven at 60 °C for 12 h, and finally the completely dried powders were placed in a tube furnace under N 2 Under the atmosphere, the temperature was raised from room temperature to 450 °C at a heating rate of 5 °C / min, then kept at 450 °C for 1 h, and finally cooled to room temperature naturally. The SEM image of the Co-based catalyst prepared in Example 2 is as follows figure 1 shown.

Embodiment 3

[0030] Embodiment 3: the preparation method of a kind of Co-based catalyst (cobalt nitrate and sulfur powder feed ratio is 0.57: 1) is as follows:

[0031] Accurately weigh 0.285g of cobalt nitrate in the mortar, then weigh 0.5g of sulfur powder into it, then add 1ml of absolute ethanol to the mortar, and carry out sufficient grinding operation until the grinding is dry (the absolute ethanol evaporates during the grinding process. ). The ground and dried samples were dried in a vacuum oven at 60 °C for 12 h, and finally the completely dried powders were placed in a tube furnace under N 2 Under the atmosphere, the temperature was raised from room temperature to 450 °C at a heating rate of 5 °C / min, then kept at 450 °C for 1 h, and finally cooled to room temperature naturally.

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Abstract

The invention discloses a Co-based catalyst and its application. The catalyst of the invention uses cobalt sulfide as an active component, and its preparation method is as follows: taking cobalt nitrate and sulfur powder as raw material precursors, mixing cobalt nitrate and sulfur powder, and then adding An appropriate amount of absolute ethanol is used for infiltration, and then fully ground to make the ethanol in the mixture volatilize and dry, and then dry in an oven for a period of time to obtain a completely dry mixed powder, which is then placed in a tube furnace. 2 Carry out high-temperature calcination under the atmosphere, cool the product after calcination, and fully grind to obtain the Co-based catalyst. The preparation of the Co-based catalyst of the present invention is completed in one step, and the preparation method is simple and efficient. The composite electrode formed by coating the Co-based catalyst on the electrode can be used in the electrolysis of heavy water to prepare deuterium gas. The electrolysis process is simple and efficient, and can quickly produce pure Deuterium gas, the catalyst has good stability in the electrolysis process.

Description

technical field [0001] The invention belongs to the technical field of material preparation and application, in particular to a Co-based catalyst and its application. Background technique [0002] Deuterium is an isotope of hydrogen, and its atomic weight is twice that of ordinary hydrogen. The chemical properties of deuterium gas are the same as that of hydrogen gas. All chemical reactions that ordinary hydrogen can occur can occur, and corresponding compounds can be formed. [0003] At present, the preparation technologies of deuterium gas mainly include liquid hydrogen rectification technology, electrolytic heavy water technology, metal hydride technology, laser technology, gas chromatography technology, etc. Among them, electrolytic heavy water technology adopts electrolytic water device, using alkali metal deuterium oxide as electrolyte or Solid polymer electrolysis of heavy water, although the purity of deuterium gas prepared by this technology is high, it is still nec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/04C25B11/075C25B11/052
CPCC25B1/04Y02E60/36
Inventor 王建国季文凯包志康张世杰丁磊
Owner ZHEJIANG UNIV OF TECH
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