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Method for producing metallic hydrogen absorption material with hydrogen absorption ability in hydrogen gas containing mixed gas

A hydrogen absorbing material, hydrogen technology, applied in metal material coating process, chemical instruments and methods, hydrogen separation and other directions, can solve the problems of no hydrogen absorbing ability, and the function of hydrogen absorbing material cannot be exerted.

Active Publication Date: 2009-12-30
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this impurity-containing hydrogen, general hydrogen-absorbing materials have almost no hydrogen-absorbing ability, and the function of hydrogen-absorbing materials cannot be exerted.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] to Mg 2 The Ni alloy is fluorinated and palladium-silver plated.

[0015] The concentration range of HF in the fluorinated solution is 0.25mol dm -3 , the concentration range of KF is 0.3 mol dm -3 . During fluorination, heat and stir the fluorinated solution at 80°C, and add Mg to it after the fluorinated solution reaches 80°C 2 Ni alloy, add 50g Mg per liter of fluoride solution 2 Ni alloy. The fluorination time was 40 minutes. The fluorinated Mg 2 The Ni alloy was cleaned with deionized water.

[0016] Pd in ​​the bath 2+ The ion concentration is 0.6mol dm -3 , Ag + The ion concentration is 0.3mol dm -3 . The amount of EDTA·2Na in the bath is 300g dm -3 . When coating, firstly heat the plating solution to 40°C, and stir while heating. After the plating solution reaches 20°C, the Mg after fluoridation treatment and cleaning 2 The Ni alloy is added to the plating solution, and the amount of the alloy added in every liter of the plating solution is 60 gr...

Embodiment 2

[0020] The ZrCo-5wt%Mm alloy is fluorinated and palladium-silver plated.

[0021] The concentration range of HF in the fluorinated solution is 0.5mol dm -3 , the concentration range of KF is 0.7 mol dm -3 . During fluorination, the fluorinated solution is heated and stirred at 20°C, and when the fluorinated solution reaches 40°C, ZrCo-5wt%Mm alloy is added thereto, and 150g of ZrCo-5wt%Mm alloy is added to each liter of the fluorinated solution. The fluorination time was 240 minutes. The fluorinated ZrCo-5wt%Mm alloy was washed with deionized water.

[0022] Pd in ​​the bath 2+ The ion concentration is 0.3mol dm -3 , Ag + The ion concentration is 0.0001mol dm -3 . The amount of EDTA·2Na in the bath is 80g dm -3 . When coating, firstly heat the plating solution to 60°C, and stir while heating. After the plating solution reaches 60° C., the fluorinated and cleaned ZrCo-5wt% Mm alloy is added to the plating solution, and the amount of alloy added to each liter of the p...

Embodiment 3

[0026] to LaNi 5 The alloy is fluorinated and palladium-silver plated.

[0027] The concentration range of HF in the fluorinated solution is 0.1mol dm -3 , the concentration range of KF is 1.0 mol dm -3 . During fluorination, heat and stir the fluorinated solution at 90°C, and add LaNi to it after the fluorinated solution reaches 100°C 5 alloy, add 100g LaNi per liter of fluorinated solution 5 alloy. The fluorination time was 400 minutes. The fluorinated alloy was washed with deionized water.

[0028] Pd in ​​the bath 2+ The ion concentration is 0.8mol dm -3 , Ag + The ion concentration is 0.5mol dm -3 . The amount of EDTA·2Na in the bath is 500g dm -3 . When coating, firstly heat the plating solution to 70°C, and stir while heating. After the plating solution reaches 70°C, the LaNi after fluoridation treatment and cleaning 5 The alloy is added to the plating solution, and the amount of the alloy added in every liter of the plating solution is 40 grams. Then th...

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PUM

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Abstract

The invention relates to a preparation method for a metal hydrogen absorbing material capable of absorbing hydrogen in the hydrogen gas with foreign gas, which is characterized in that: by conducting fluorination and coating treatment on the hydrogen absorbing material, the hydrogen absorbing material, the hydrogen absorbing performance of which is insusceptible to the influence of the foreign gas, can be obtained. The preparation method for the hydrogen absorbing material has the advantages that: the hydrogen absorbing material can retain a strong absorbing capacity for hydrogen even in the hydrogen atmosphere with multiple foreign gases, such as CO, CO2, CH4, O2, N2, and H2O.

Description

technical field [0001] The invention relates to the field of hydrogen preparation, purification, storage and transportation materials, in particular to a method for preparing a metal hydrogen absorption material capable of absorbing hydrogen in hydrogen containing impurity gas. technical background [0002] As an important energy substance, hydrogen occupies an important position in social production, and hydrogen storage materials can store and release hydrogen in a controllable manner, with large hydrogen storage capacity, safety and convenience, so hydrogen storage materials are an important energy source Materials are also receiving more and more attention. However, in the application process of hydrogen, in many practical applications, the hydrogen used often contains certain impurity gases, such as CO, CO 2 、CH 4 , O 2 , N 2 、H 2 O et al. In such impurity-containing hydrogen, general hydrogen-absorbing materials have almost no hydrogen-absorbing ability, and the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/02B01J20/32C23C18/18C23C18/52C01B3/56
Inventor 王树茂李华玲蒋利军刘晓鹏李国斌詹锋宋洋
Owner GRIMAT ENG INST CO LTD