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Precious metal alkaline solution and preparation method thereof

A precious metal, turbid liquid technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, catalyst activation/preparation, etc., can solve the problem of inability to prepare precious metal thin films in batches, high comprehensive cost, and low compounding efficiency. and other problems, to achieve the effect of uniform appearance, reduction of production cost, and improvement of compound efficiency

Inactive Publication Date: 2015-06-10
SICHUAN INST OF MATERIALS & TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of can effectively solve the problem that can't prepare the catalytic plate with thinner noble metal film in batches, comprehensive cost is high, composite efficiency is low, provide a kind of noble metal alkaline turbid solution and its preparation that can solve the above-mentioned problems catalytic plate method

Method used

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  • Precious metal alkaline solution and preparation method thereof
  • Precious metal alkaline solution and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] First, prepare the noble metal alkaline turbid solution of the present invention; its preparation process is as follows:

[0031] (1) Add 2.5 mol of sodium hydroxide, 2.5 mol of potassium hydroxide, 1 mol of ammonia monohydrate and 1 mol of absolute ethanol into 1L of pure water, and stir evenly;

[0032] (2) add the rhodium trichloride of 5mol, the iridium trichloride of 5mol, the cupric chloride of 5mol and the sodium chloroplatinite of 5mol successively again, continue to stir;

[0033] (3) The mixture was placed on a magnetic stirrer at 60° C., stirred for 1 hour, and then left to stand for 2 hours to form a finished product.

[0034] Next, put the microporous stainless steel plate into the alkaline turbid solution of precious metals, immerse it for 2 minutes at 10°C by constant-temperature ultrasonic impregnation method, then take it out to dry, and then dry it in air at 80°C for 5 hours.

[0035] Finally, the impregnated and dried microporous stainless steel plat...

Embodiment 2

[0041] The difference between this embodiment and embodiment 1 is that: the molar weight and configuration conditions of each component in the noble metal alkaline turbid solution are different;

[0042] In this embodiment, 3 mol of sodium hydroxide, 3 mol of potassium hydroxide, 1.5 mol of ammonia monohydrate, 1.5 mol of absolute ethanol, 6 mol of rhodium trichloride, and 6 mol of iridium trichloride were added to 1 L of pure water. , 6 mol of copper chloride and 6 mol of sodium chloroplatinite mixed composition. The configuration condition of the noble metal alkaline turbid solution is that the mixed mixture is placed on a magnetic stirrer at 70° C., stirred for 1.5 hours, and then left to stand for 1.5 hours to form a finished product.

Embodiment 3

[0044] The difference between this embodiment and embodiment 1 is: the difference between this embodiment and embodiment 1 is: the molar weight and configuration conditions of each component in the noble metal alkaline turbid solution are different;

[0045] In this embodiment, 2 mol of sodium hydroxide, 2 mol of potassium hydroxide, 0.5 mol of ammonia monohydrate, 0.5 mol of absolute ethanol, 4 mol of rhodium trichloride, and 4 mol of iridium trichloride were added to 1 L of pure water. , 4mol of copper chloride and 4mol of sodium chloroplatinite mixed composition. The configuration condition of the noble metal alkaline turbid solution is that the mixed mixture is placed on a magnetic stirrer at 50° C., stirred for 2 hours, and then left to stand for 3 hours.

[0046] For the catalytic plates produced in Examples 1-3, the recombination efficiency of the prepared catalytic plates was detected, and the results are shown in Table 1.

[0047] Table 1

[0048]

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Abstract

The invention discloses a precious metal alkaline solution and a preparation method thereof. The problem that catalyzing boards provided with thin precious metal films cannot be prepared in a batch mode and have high comprehensive cost and low composite efficiency is solved. The precious metal alkaline solution is mainly prepared by evenly mixing materials and 1L of pure water, wherein the materials include 1.5-3.5mol of sodium hydroxide,1.5-3.5mol of potassium hydroxide, 0.5-1.5mol of ammonium hydroxide, 0.5-1.5mol of absolute ethyl alcohol, 4-6mol of rhodium chloride, 4-6mol of iridium chloride, 4-6mol of copper chloride and 4-6mol of sodium chloroplatinite. By utilizing the precious metal alkaline solution and the preparation method of the precious metal alkaline solution, the catalyzing boards with thin precious metal films can be manufactured in the batch mode, the comprehensive cost of the catalyzing boards is effectively reduced, the catalyzing efficiency of the catalyzing boards is improved, and the composite efficiency of the catalyzing boards reaches to 98%.

Description

technical field [0001] The invention relates to an alkaline turbid solution, in particular to a noble metal alkaline turbid solution, and also relates to a method for preparing a catalytic plate from the noble metal alkaline turbid solution. Background technique [0002] In order to avoid or reduce the risk of hydrogen explosion in the containment of nuclear power plants, the second-generation plus and third-generation nuclear power plants in the world and at present are equipped with corresponding measures as precautions. One of the important measures is to place dozens of non- Active hydrogen recombiner. The core of the recombiner is the built-in passive catalytic plate. The catalytic plates of existing recombiners mainly include porous ceramic catalytic plates, stainless steel-porous slurry catalytic plates and all-precious metal catalytic plates. [0003] Both the porous ceramic catalytic plate and the stainless steel-porous slurry catalytic plate have the problems of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/02B01J37/03B01J23/40B01F1/00
Inventor 曹伟赖新春张鹏程佘瑞峰唐辉张志李嵘周绍飞杜洪芳
Owner SICHUAN INST OF MATERIALS & TECH
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