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Hydrogen-trapping material, method of preparation and uses

A technology of radioactive materials and hydrogen absorbing agents, applied in chemical instruments and methods, hydrogen, hydrogen separation, etc., can solve problems that have not been raised and are not sensitive to radiation decomposition

Inactive Publication Date: 2011-11-16
COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, specific hydrogen absorbers containing such oxide mixtures that are insensitive to radiolysis and capable of handling toxic gases have not been proposed yet.

Method used

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  • Hydrogen-trapping material, method of preparation and uses
  • Hydrogen-trapping material, method of preparation and uses

Examples

Experimental program
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Effect test

Embodiment Construction

[0083] 1. Preparation of coated cement with hydrogen absorbing agent

[0084] The metal oxide used to prepare the hydrogen absorber is activated MnO 2 (Merck, >90%) and Ag 2O (Merck, >99%). The two compounds were mixed mechanically and water was added to the mixture, then the whole was dried in an oven for 2 hours [16].

[0085] Cement / hydrogen absorber coating materials were prepared from different binders. The three binders used to prepare coating materials with hydrogen absorbers are as follows:

[0086] - Geopolymer (No. 1 Coating Material)

[0087] - Portland Cement CEM I (Coating Material No. 2)

[0088] -Sulphoaluminate (coating material No. 3)

[0089] Products used for geopolymers are Metakaolin (Grade Construction Product), KOH (Prolabo, 98%) and SiO from Pieri Premix MK 2 (Tixosil, Degussa).

[0090] Portland / Absorbent and Sulphoaluminate / Absorbent were prepared using CEM Type I 52.5N cement (Lafarge Le Teil) with an 80 / 20 (by weight) mixture of clinker (y...

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PUM

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Abstract

The present invention relates to a material capable of trapping an inflammable gas, such as hydrogen, comprising at least one metal oxide in a cementitious matrix. The present invention also relates to the preparation of such a material and to its various uses.

Description

technical field [0001] The present invention belongs to the technical field for the removal of combustible gases such as hydrogen. [0002] More particularly, the present invention proposes a material comprising at least one coated hydrogen getter in a mineral matrix and which is intended for the treatment of, inter alia, radioactive waste Hydrogen hazards in the context of reversible phases for safe transport and storage. [0003] The invention also relates to a method for the preparation of such a material, its use and a method for the removal of combustible gases. Background technique [0004] Nuclear installations generate a certain amount of "technological waste" which can contain objects (objects, objects) and materials of very different nature such as engine parts, filters, metal waste, crushed rock, glass etc. In this waste also organic materials based on cellulose such as paper, wood, cotton, or in the form of plastic materials (plastics) such as packaging lids i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06B01J20/28C01B3/00C01B3/50G21F5/06
CPCB01J20/0222C01B3/508B01J20/0233B01J20/06B01J20/28026B01J2220/42C01B3/0078C01B3/001Y02E60/327Y02E60/32
Inventor 戴维·拉姆贝丁塞利娜·考蒂特科默斯法比安·弗里佐恩克里斯托弗·茹索-迪比安
Owner COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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