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Platinum-charcoal/rare earth oxide composite-phase hydrophobic catalyst, and preparation method and application thereof

A rare earth oxide and composite phase technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as low catalytic performance, and achieve simple, The effect of design science, high practical value and promotion value

Inactive Publication Date: 2019-05-17
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is to provide a platinum carbon / rare earth oxide composite phase hydrophobic catalyst to solve the problem of low catalytic performance in the prior art

Method used

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  • Platinum-charcoal/rare earth oxide composite-phase hydrophobic catalyst, and preparation method and application thereof
  • Platinum-charcoal/rare earth oxide composite-phase hydrophobic catalyst, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] This embodiment discloses the preparation method of the platinum carbon / rare earth oxide composite phase hydrophobic catalyst of the present invention, specifically:

[0036] Step 1. Preparation of platinum carbon catalyst: dissolving chloroplatinic acid hydrate in deionized water to form an aqueous solution with a platinum ion concentration of 0.1mol / L;

[0037] A certain amount of XC-72 carbon black was weighed, and then an aqueous solution of chloroplatinic acid was added according to the loading amount of platinum in the platinum carbon as 10 wt%, and fully stirred. After the sample was preliminarily dried, it was further dried in a vacuum oven at 110°C for 12 hours. Next, the dried sample is subjected to reduction treatment, and the treatment condition is 10% H at a flow rate of 300ml / min. 2Heating to 400°C at 10K / min under the / Ar mixed gas atmosphere, keeping the temperature constant for 2h, and then cooling to room temperature with the furnace to prepare the pl...

Embodiment 2

[0043] This embodiment discloses the preparation method of the platinum carbon / rare earth oxide composite phase hydrophobic catalyst of the present invention, specifically:

[0044] Step 1. Preparation of platinum carbon catalyst: dissolving chloroplatinic acid hydrate in deionized water to form an aqueous solution with a platinum ion concentration of 0.01mol / L;

[0045] A certain amount of XC-72 carbon black was weighed, and then an aqueous solution of chloroplatinic acid was added according to the loading amount of platinum in the platinum carbon at 0.1 wt%, and fully stirred. After the sample was preliminarily dried, it was further dried in a vacuum oven at 110°C for 12 hours. Next, the dried sample is subjected to reduction treatment, and the treatment condition is 10% H at a flow rate of 300ml / min. 2 Heating to 400°C at 10K / min under the / Ar mixed gas atmosphere, keeping the temperature constant for 2h, and then cooling to room temperature with the furnace to prepare the...

Embodiment 3

[0051] This embodiment discloses the preparation method of the platinum carbon / rare earth oxide composite phase hydrophobic catalyst of the present invention, specifically:

[0052] Step 1. Preparation of platinum carbon catalyst: dissolving chloroplatinic acid hydrate in deionized water to form an aqueous solution with a platinum ion concentration of 0.05mol / L;

[0053] A certain amount of XC-72 carbon black was weighed, and then an aqueous solution of chloroplatinic acid was added according to the loading amount of platinum in the platinum carbon as 20 wt%, and fully stirred. After the sample was preliminarily dried, it was further dried in a vacuum oven at 110°C for 12 hours. Next, the dried sample is subjected to reduction treatment, and the treatment condition is 10% H at a flow rate of 300ml / min. 2 Heating to 400°C at 10K / min under the / Ar mixed gas atmosphere, keeping the temperature constant for 2h, and then cooling to room temperature with the furnace to prepare the ...

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Abstract

The invention discloses a platinum-charcoal/rare earth oxide composite-phase hydrophobic catalyst, and a preparation method and application thereof, and aims to solve the problem of low active metal utilization rate in the prior art. The platinum charcoal/rare earth oxide composite phase hydrophobic catalyst is characterized in that platinum charcoal is taken as a catalytic active component, a rare earth oxide is taken as a catalytic assistant, polytetrafluoroethylene is taken as a bonding agent and a hydrophobic medium, and metal fiber mat is taken as a support carrier; the platinum-charcoalcontains 0.1 to 20 percent by weight of platinum; the weight ratio of the addition amount of the rare earth oxide to the platinum charcoal is 1 : (1 to 10); the weight ratio of the platinum-charcoal/rare earth oxide composite-phase to the polytetrafluoroethylene is 1 : (1 to 4); in case that the mass of the catalyst is 100 percent, the content of the metal fiber mat is 30 to 70 percent by weight.The platinum-charcoal/rare earth oxide composite-phase hydrophobic catalyst has the advantages of scientific design and simple method, and the catalyst has superior catalyzing performance.

Description

technical field [0001] The invention belongs to the technical field of hydrogen-water isotope exchange catalysts, and in particular relates to a platinum carbon / rare earth oxide composite phase hydrophobic catalyst and its preparation method and application. Background technique [0002] The operation of nuclear facilities such as nuclear reactors (including various types of fission reactors and fusion reactors planned in the future) and spent fuel reprocessing plants will produce a large amount of tritiated wastewater (including HTO, DTO or T2O). Compared with gaseous tritium, the toxicity of tritiated water to living organisms will be significantly increased by about 25000 times. In view of the radioactive hazards of tritium-containing water, for tritium-containing light water (such as wastewater produced by pressurized water reactors), water should be detritiated before being discharged into the environment to reduce its harm to the ecological environment and public healt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/63C01B5/00C01B5/02
Inventor 罗军洪曾甯李佩龙陈闽喻彬安永涛冯兴文蔡金光
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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