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Ru-based catalyst and preparation method and application thereof

A catalyst, the technology of cyanoguanidine, which is applied in the field of Ru-based catalyst and its preparation, can solve the problems of complicated treatment process and difficult removal, and achieve the effects of small particles, good mechanical strength and good cycle stability

Pending Publication Date: 2020-11-10
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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  • Ru-based catalyst and preparation method and application thereof
  • Ru-based catalyst and preparation method and application thereof
  • Ru-based catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: The preparation method of a kind of Ru-based catalyst (loading capacity 1%) is as follows:

[0028] Accurately weigh 1.0 g of the carrier precursor cyanoguanidine in a mortar, then weigh 30 mg of trinitronitrosyl ruthenium (II) into it, then add 1 mL of absolute ethanol to the mortar, and perform a full grinding operation until Grind and dry (volatilize with absolute ethanol). The ground and dried samples were placed in a vacuum oven for 60 o C dried for 12h, and finally the completely dried powder was placed in a tube furnace under N 2 Atmosphere, 900 o C high temperature calcination 1h (heating rate 5 o C / min), after it is naturally cooled, it is taken out and ground evenly to obtain the Ru-based catalyst with the stated load.

Embodiment 2

[0029] Embodiment 2: the preparation method of a kind of Ru-based catalyst (loading capacity 2%) is as follows:

[0030] Accurately weigh 1.0 g of the carrier precursor cyanoguanidine in a mortar, then weigh 60 mg of trinitronitrosyl ruthenium (II) and add it, then add 1 mL of absolute ethanol to the mortar, and perform a full grinding operation until Grind and dry (volatilize with absolute ethanol). The ground and dried samples were placed in a vacuum oven for 60 o C dried for 12h, and finally the completely dried powder was placed in a tube furnace under N 2 Atmosphere, 900 o C high temperature calcination 1h (heating rate 5 o C / min), after it is naturally cooled, it is taken out and ground evenly to obtain the Ru-based catalyst with the stated load.

Embodiment 3

[0031] Embodiment 3: the preparation method of a kind of Ru-based catalyst (loading capacity 4%) of deuterium gas produced by electrolysis of heavy water is as follows:

[0032] Accurately weigh 1.0 g of the carrier precursor cyanoguanidine in a mortar, then weigh 120 mg of trinitronitrosyl ruthenium (II) and add it, then add 1 mL of absolute ethanol to the mortar, and perform a full grinding operation until Grind and dry (volatilize with absolute ethanol). The ground and dried samples were placed in a vacuum oven for 60 o C dried for 12h, and finally the completely dried powder was placed in a tube furnace under N 2 Atmosphere, 900 o C high temperature calcination 1h (heating rate 5 o C / min), after it is naturally cooled, it is taken out and ground evenly to obtain the Ru-based catalyst with the stated load.

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Abstract

The invention discloses a Ru-based catalyst and a preparation method and application thereof. According to the catalyst, cyanoguanidine is used as a carrier, Ru is used as an active component, the loading amount of Ru is between 1 to 5wt.% based on the mass of the carrier, then the prepared catalyst and carbon cloth are compounded to be used as a working electrode for preparing deuterium gas by electrolyzing heavy water, and the electrolysis process is mainly a typical heavy water electrolysis process of a three-electrode system. The electrolysis process is simple and efficient, pure deuteriumgas can be rapidly generated, preparation of the catalyst is completed in one step, and meanwhile the prepared catalyst has good stability and wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of material preparation and application, and in particular relates to a Ru-based catalyst and its preparation method and application. Background technique [0002] Deuterium is an isotope of hydrogen, the atomic weight is twice that of ordinary hydrogen, triple point: -254.4 o C; specific heat capacity (101.325kPa, 21.2 o C): 5.987m 3 / kg; gas-liquid volume ratio (15 o C, 100kPa): 974L / L; critical temperature: -234.8 o C; heat of vaporization ΔH v (-249.5 o C): 305kJ / kg. The chemical properties of deuterium are the same as that of hydrogen, and all chemical reactions that can occur with ordinary hydrogen can occur, and corresponding compounds can be formed. At the same time, the high quality and low zero point characteristics of deuterium make it have different reaction speeds in the same reaction, and the position of the reaction equilibrium point is also significantly different. [0003] At present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/46B01J27/24B01J37/08C25B1/00C25B11/08
CPCB01J23/462B01J27/24B01J37/082C25B1/00B01J35/33
Inventor 王建国包志康张世杰丁磊
Owner ZHEJIANG UNIV OF TECH
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