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Composite hydrogen storage material of sepiolite admixed with palladium and preparation method of composite hydrogen storage material

A technology for hydrogen storage material and sepiolite, which is applied in the direction of hydrogen production and the like, can solve the problems of inability to meet large-scale hydrogen storage, limited application scope, single hydrogen storage method, etc., and achieves easy actual production operation, simple preparation method, The effect of increasing hydrogen storage capacity

Inactive Publication Date: 2014-06-18
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as sepiolite with good physical adsorption hydrogen storage capacity, there are still disadvantages such as low hydrogen storage capacity at room temperature and pressure, and a single hydrogen storage method, which limits its application range and cannot meet the current large-scale hydrogen storage needs.

Method used

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  • Composite hydrogen storage material of sepiolite admixed with palladium and preparation method of composite hydrogen storage material
  • Composite hydrogen storage material of sepiolite admixed with palladium and preparation method of composite hydrogen storage material
  • Composite hydrogen storage material of sepiolite admixed with palladium and preparation method of composite hydrogen storage material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 15 parts of sepiolite raw materials into water with a weight ratio of 1:30, stir and mix at a high speed of 500r / min for 6 hours, then let it stand for 24 hours, take the upper layer suspension and carry out suction filtration, washing and drying in sequence to obtain a specific surface area of ​​42m 2 / g of washed sepiolite; mix 10 parts of washed sepiolite with 3mol / L hydrochloric acid aqueous solution at a weight ratio of 1:20, then heat and stir in a water bath at 25°C for 16 hours, filter, wash and dry The specific surface area obtained is 279m 2 / g of acid-activated sepiolite; mix 8 parts of acid-activated sepiolite with ethanol solution of palladium chloride in a ratio of 1:20 by weight, first ultrasonically disperse evenly, then heat and stir in a water bath at 25°C for 24h, and Filtration, washing and drying to obtain a specific surface area of ​​287m 2 / g of preactivated sepiolite, wherein the weight ratio of palladium chloride and acid activated sepiolit...

Embodiment 2

[0030] Add 15 parts of sepiolite raw materials into water with a weight ratio of 1:40, stir and mix at a high speed of 500r / min for 3 hours, then let it stand for 16 hours, take the upper layer suspension and carry out suction filtration, washing and drying in sequence to obtain a specific surface area of ​​41m 2 / g of washed sepiolite; mix 10 parts of washed sepiolite with 1mol / L hydrochloric acid aqueous solution at a weight ratio of 1:10, then heat and stir in a water bath at 40°C for 10 hours, filter, wash and dry The specific surface area obtained is 274m 2 / g of acid-activated sepiolite; mix 8 parts of acid-activated sepiolite and ethanol solution of palladium chloride in a ratio of 1:30 by weight, first ultrasonically disperse evenly, then heat and stir in a water bath at 40°C for 18h, and Filtration, washing and drying to obtain a specific surface area of ​​288m 2 / g of preactivated sepiolite, wherein the weight ratio of palladium chloride and acid activated sepiolite...

Embodiment 3

[0033] Add 15 parts of sepiolite raw materials into water with a weight ratio of 1:60, stir and mix at a high speed of 500r / min for 1h, then let it stand for 12h, take the upper layer of suspension and carry out suction filtration, washing and drying in sequence to obtain a specific surface area of ​​41m 2 / g of washed sepiolite; mix 10 parts of washed sepiolite with 0.5mol / L hydrochloric acid aqueous solution at a weight ratio of 1:30, then heat and stir in a water bath at 60°C for 4 hours, filter, wash and Dry to obtain a specific surface area of ​​258m 2 / g of acid-activated sepiolite; mix 8 parts of acid-activated sepiolite with ethanol solution of palladium chloride in a ratio of 1:50 by weight, first ultrasonically disperse evenly, then heat and stir in a water bath at 60°C for 12h, and Filtration, washing and drying to obtain a specific surface area of ​​273m 2 / g of preactivated sepiolite, wherein the weight ratio of palladium chloride and acid activated sepiolite in ...

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Abstract

The invention discloses a composite hydrogen storage material of sepiolite admixed with palladium. The composite hydrogen storage material is characterized in that the content of palladium is 1 to 10 percent by weight, and the content of stored hydrogen is 1.8 to 2.8 percent by weight. The invention further discloses a preparation method of the composite hydrogen storage material, which comprises the following steps: conducting water washing and acid activation on sepiolite raw material; planting palladium cores into sepiolite fibers first through pre-activation; and then, carrying out autocatalyzed oxidation reduction reaction adopting chemical plating, so as to prepare the composite hydrogen storage material of sepiolite admixed with palladium. The method skillfully adopts the characteristic that the surface of sepiolite has an active center, and conducts pre-activation on sepiolite at the normal temperature, so as to ensure that in the subsequent chemical plating process, the palladium seed crystal on the surface of the sepiolite serves as a self-catalysis active center, and induce palladium to further deposit. Therefore, not only is a new method provided for the preparation of the composite material of sepiolite admixed with palladium, but also the process procedure of conventional chemical plating is simplified, and the hydrogen storage capability of the composite material is further improved.

Description

technical field [0001] The invention belongs to the technical field of metal-doped mineral composite hydrogen storage material and its preparation, and in particular relates to a palladium-doped sepiolite composite hydrogen storage material and a preparation method thereof. Background technique [0002] Fossil energy has made great contributions to the progress of human society, but it is a kind of non-renewable energy, which will eventually be exhausted as people use it, and will release a large amount of harmful gases during use, which has a great impact on the world. The ecological environment of the world has caused serious pollution, such as the greenhouse effect, acid rain, and the hole in the ozone layer, so it is imperative to find an environmentally friendly and renewable energy source. Hydrogen energy is considered to be a new green energy in the 21st century, and it has become the focus of people's research because of its many excellent properties. However, the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/02
Inventor 胡小平王朝阳付志兵刘志虎
Owner SOUTHWEAT UNIV OF SCI & TECH