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Preparation method for platinum membrane catalytic plate based on passive hydrogen and oxygen recombiner

A technology of platinum film catalytic plate and recombiner, which is applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., and can solve potential safety hazards and preparation of recombiner catalytic plates Solve the problems of complex process and high cost, and achieve the effect of eliminating potential safety hazards, better preparation effect and low cost

Inactive Publication Date: 2014-08-06
SICHUAN INST OF MATERIALS & TECH +2
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  • Abstract
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  • Application Information

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Problems solved by technology

[0017] The purpose of the present invention is to provide a method for preparing a platinum film catalytic plate based on a passive hydrogen-oxygen recombiner, which mainly solves the problems of complex preparation process, high cost and potential safety hazards of the recombiner catalytic plate

Method used

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  • Preparation method for platinum membrane catalytic plate based on passive hydrogen and oxygen recombiner
  • Preparation method for platinum membrane catalytic plate based on passive hydrogen and oxygen recombiner
  • Preparation method for platinum membrane catalytic plate based on passive hydrogen and oxygen recombiner

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Embodiment

[0048] Such as figure 1 As shown, the present invention uses the porous stainless steel filter as the base material, Pt as the catalytic active component, and adopts ultrasonic cleaning and ultrasonic impregnation process to process the porous stainless steel filter to make a catalytic plate, and its product structure is that the surface of the porous stainless filter is uniform Plated with a dense Pt film with a thickness of not less than 50nm, the preparation process of the catalytic plate of the present invention comprises the following steps:

[0049] (1) At room temperature, place the porous stainless steel filter in an ultrasonic cleaning tank with dilute hydrochloric acid solution for ultrasonic cleaning;

[0050] (2) Take out the porous stainless steel filter and place it in the chloroplatinic acid solution for ultrasonic impregnation;

[0051] (3) Take out the porous stainless steel filter and place it in ultrapure water for ultrasonic cleaning;

[0052] (4) Take ou...

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Abstract

The invention discloses a preparation method for a platinum membrane catalytic plate based on a passive hydrogen and oxygen recombiner, and solves the problems that a preparation process of a recombiner catalytic plate is complex and high in cost, and has security risks. The preparation method for the catalytic plate comprises the following steps of (1) at a room temperature, placing porous stainless steel filters in an ultrasonic cleaning tank with a dilute hydrochloric acid solution to carry out ultrasonic cleaning; (2) taking the porous stainless steel filter out and placing the porous stainless steel filter in a chloroplatinic acid solution for ultrasonic immersion; (3) taking the porous stainless steel filter out and placing the porous stainless steel filter in ultrapure water to carry out ultrasonic cleaning; and (4) taking the porous stainless steel filter out and drying the porous stainless steel filter. The preparation method is simple in process flow, convenient for operation, small in usage amount of raw materials, high in utilization rate of the raw materials, short in preparation period and high in security. The preparation method is very suitable for large-scale production of the recombiner catalytic plate; and the prepared catalytic plate has high dehydrogen efficiency, short start-up time and good dehydrogen performance, so that the preparation method has quite high practical value and promotional value.

Description

technical field [0001] The invention relates to a preparation method, in particular to a preparation method of a platinum membrane catalytic plate based on a passive hydrogen-oxygen recombiner. Background technique [0002] The safety performance of nuclear power plants is the focus of nuclear power construction. At present, in order to avoid or reduce the risk of hydrogen explosion in the containment of nuclear power plants, the existing second-generation and third-generation nuclear power plants are equipped with corresponding measures as precautions. One of the important measures is Dozens of passive hydrogen-oxygen recombiners (PAR) are distributed in the containment vessel, which can automatically start without external energy in the case of design basis accidents and severe accidents, and reduce the hydrogen concentration to below the safe level. In general, a PAR can be described as a bottom-loaded catalyst vertical channel (commonly known as a "chimney"). After the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/42B01J35/10G21C9/06
CPCY02E30/40Y02E30/30
Inventor 高博张志赖新春张鹏程唐辉周绍飞朱宏志李嵘刘孟
Owner SICHUAN INST OF MATERIALS & TECH
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