JPS6130682A - Hydrogen occluding material - Google Patents
Hydrogen occluding materialInfo
- Publication number
- JPS6130682A JPS6130682A JP15373084A JP15373084A JPS6130682A JP S6130682 A JPS6130682 A JP S6130682A JP 15373084 A JP15373084 A JP 15373084A JP 15373084 A JP15373084 A JP 15373084A JP S6130682 A JPS6130682 A JP S6130682A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- hydrogen
- hydrogen storage
- hydrogen occluding
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は水素含有ガスからの水素の分離、あるいは水素
の貯蔵、輸送等に用いられる水素吸蔵材料に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hydrogen storage material used for separating hydrogen from a hydrogen-containing gas, or storing and transporting hydrogen.
この種の水素吸蔵材料としては従来から水素吸蔵合金が
知られている。該水素吸蔵合金は水素の貯蔵、輸送以外
に蓄熱、ヒートポンプ、冷暖房システム材料等のエネル
ギー変換媒体としての利用も考えられている。Hydrogen storage alloys have been known as this type of hydrogen storage material. In addition to storing and transporting hydrogen, the hydrogen storage alloy is also considered to be used as an energy conversion medium for heat storage, heat pumps, air-conditioning system materials, and the like.
しかしながら該水素吸蔵合金においては水素吸蔵の際に
水素中の不純分であるｃｏ 、 ｃｏ□、０２゜Ｈ２０
等の酸素もしくは酸化物あるいはＨ８，ｓｏ２等の硫黄
化合物に接触して酸化あるいは侵蝕され、酸化、侵蝕さ
れると水素吸蔵合金の水素吸蔵特性が低下すると云う問
題があった。However, in this hydrogen storage alloy, when hydrogen is stored, impurities in hydrogen such as co, co□, 02°H20
There has been a problem in that hydrogen storage alloys are oxidized or eroded by contact with oxygen or oxides such as, or sulfur compounds such as H8, SO2, etc. When oxidized or eroded, the hydrogen storage properties of hydrogen storage alloys are reduced.
本発明は上記問題点を解決する手段として水素吸蔵合金
の表面を高安定性金属または合金によって被覆すること
を骨子とする。The present invention is based on coating the surface of a hydrogen storage alloy with a highly stable metal or alloy as a means to solve the above problems.
本発明を以下に詳細に説明すれば、本発明に云う水素吸
蔵合金とは水素吸蔵特性の大なる合金であシ、これを例
示すればＬａＮｉ５ ｙ ＴｉＦｅ 、 ＴｉＭｎｚ、
ｓ ｐＬａＣｏ５ ＃ ＭｍＮｉ５ ｅ ＭｇｇＣｕ
＊ Ｍｇ２Ｎｉ ＃ ＶＮｂ等である（ζ＼にＭｍはミ
ツＶユメタＶで稀土類元素の混合物である）。上記水素
吸蔵合金は次式のようＫして水素を吸蔵しかつ放出する
。The present invention will be explained in detail below. The hydrogen storage alloy referred to in the present invention is an alloy with high hydrogen storage properties, and examples thereof include LaNi5 y TiFe, TiMnz,
spLaCo5 # MmNi5 e MggCu
*Mg2Ni #VNb etc. (Mm in ζ\ is Mitsu V Yumeta V and is a mixture of rare earth elements). The above-mentioned hydrogen storage alloy absorbs and releases hydrogen when subjected to K as shown in the following equation.
吸蔵 Ｍ 十Ｈ＋ ＭＨ＋ Ｑ 放出 こ＼にＱＦｉ反応熱量である。occlusion M 10H+ MH+ Q release This is the QFi reaction heat amount.
上記水素吸蔵合金は通常粉体もしくは粒体として提供さ
れるがプレス等によって所定形状に成形されてもよい。The above-mentioned hydrogen storage alloy is usually provided as powder or granules, but may be formed into a predetermined shape by pressing or the like.
本発明に云う高安定性金属または合金とは高度な耐酸化
性、耐蝕性を有するものであシ、このよう表金属または
合金を例示すればＣｒ ｅ Ｐｄ ＋ Ｐｔ。The highly stable metal or alloy referred to in the present invention is one that has high oxidation resistance and corrosion resistance, and examples of such surface metals or alloys include Cre Pd + Pt.
Ａｇ ｒ Ａｕ ｒ Ｒｈ ｐ Ｉｒ ｐ Ｉｎ ｐ
Ｔｌからなる群より選ばれた金属あるいは上記金属相互
の二種以上の合金である。上記金属あるいは合金のうち
望ましいものはＰｄ 、 Ｐｔおよびこれら相互の合金
である。Ag r Au r Rh p Ir p In p
It is a metal selected from the group consisting of Tl or an alloy of two or more of the above metals. Among the above metals or alloys, preferred are Pd, Pt, and their mutual alloys.
上記水素吸蔵合金表面に上記高安定性金属または合金を
被覆するには通常、電解メッキ、無電解メッキ、蒸着、
スパッタリング等が用いられる。In order to coat the above-mentioned highly stable metal or alloy on the above-mentioned hydrogen storage alloy surface, electrolytic plating, electroless plating, vapor deposition,
Sputtering or the like is used.
そして上記高安定性金属または合金の被膜は通常０．５
〜１．５μ程度にされる。And the coating of the above-mentioned high stability metal or alloy is usually 0.5
~1.5μ.
本発明の水素吸蔵材料は上記したように水素吸蔵合金の
表面を高安定性金属または合金によって被覆するからＣ
ｏ 、 Ｃｏ、 、 Ｈ２０、Ｈ８、ＳＯ２等の不純分
が水素中に存在しても水素吸蔵合金はこれら不純分に直
接接触することから保護される。Since the hydrogen storage material of the present invention coats the surface of the hydrogen storage alloy with a highly stable metal or alloy as described above, C
Even if impurities such as o, Co, , H20, H8, SO2, etc. are present in hydrogen, the hydrogen storage alloy is protected from direct contact with these impurities.
したがって水素吸蔵合金はこれら不純分によって酸化あ
るいは侵蝕されることを防止され、長期間安定に水素吸
蔵特性を維持することが出来る。Therefore, the hydrogen storage alloy is prevented from being oxidized or corroded by these impurities, and can stably maintain its hydrogen storage properties for a long period of time.
〔実施例１〕
約１００ｍｅｓｈの平均粒度を有するＴｉＭｎ１．５合
金の表面に無電解メッキによって約１μのＰｄ被膜を形
成して水素吸蔵材料を作成する。該水素吸蔵材料を内径
４鱈のパイプに約５ｇ充填してカラムを作成し、該カラ
ムに常温で０．１重量係のＣＯを含むＨ２を送通して吸
蔵させ、次いで８０°Ｃに加熱して吸蔵したＨ２を放出
させる吸蔵−放出サイクルを繰返し、各サイクル毎の飽
和水素吸蔵量を測定した。この結果は第１図に示される
。[Example 1] A hydrogen storage material is prepared by forming a Pd film of about 1 μm on the surface of a TiMn1.5 alloy having an average particle size of about 100 mesh by electroless plating. A column was prepared by filling a pipe with an inner diameter of 4 g with about 5 g of the hydrogen storage material, and H2 containing 0.1 weight coefficient of CO was passed through the column at room temperature to absorb it, and then heated to 80 ° C. The storage-release cycle in which the stored H2 was released was repeated, and the saturated hydrogen storage amount was measured for each cycle. The results are shown in FIG.
第１図においてグラツー−は本実施例の水素吸蔵材料で
あり、−・は比較例であり本実施例の水素吸蔵合金Ｔｉ
Ｍｎ１．ｇにおいてＰｄ被膜を般社ないものである。第
１図によれば本実施例の水素吸蔵材料は１０サイクル付
近までは若干飽和水素吸蔵量が低下するがそれ以後回を
重ねても殆んど変化しない。しかし比較例では飽和水素
吸蔵量は回を重ねるにしたがって低下し２０サイクルで
は殆んど吸蔵能力を示さなくなる。In FIG. 1, Gratu - is the hydrogen storage material of this example, and - and is a comparative example, which is the hydrogen storage alloy Ti of this example.
Mn1. In g, there is no Pd coating. According to FIG. 1, in the hydrogen storage material of this example, the saturated hydrogen storage amount decreases slightly up to around the 10th cycle, but after that, there is almost no change even after repeated cycles. However, in the comparative example, the saturated hydrogen storage amount decreases as the cycles are repeated, and almost no storage capacity is shown after 20 cycles.
〔実施例２〕
約８０ｍｅｓｈの平均粒度を有するＭｎｌＮｉ４．１ｉ
Ａｌｏ、５合金の表面に電解メッキによって約０．８μ
のｐｔ被被膜形成して水素吸蔵材料を作成する。該水素
吸蔵材料を内径４ｍのパイプに約５ｆ充填してカラムを
作成し、該カラムに常温で６００ ｐＰｍの０□を含む
Ｈ２を送通して吸蔵させ、次いで８０℃に加熱して吸蔵
したＨ２を放出させる吸蔵−放出サイクルを繰返し、各
サイクル毎の飽和水素吸蔵量を測定した。この結果は第
２図に示される。本実施例においイも水素吸蔵特性の低
下はＬ」に示される本実施例の方がし」に示される比較
例よシも格段に小さい。なお比較例はｐｔ被被膜ないＭ
ｍＮｉ４．５ＡＩ（１，５合金を用いたものである。[Example 2] MnlNi4.1i with an average particle size of about 80 mesh
Approximately 0.8 μ by electrolytic plating on the surface of Alo, 5 alloy
A hydrogen storage material is created by forming a PT coating. A column was created by filling a pipe with an inner diameter of 4 m with about 5 f of the hydrogen storage material, and H2 containing 600 pPm of 0□ was passed through the column at room temperature to absorb it, and then heated to 80°C to remove the absorbed H2. The occlusion-desorption cycle was repeated to release hydrogen, and the saturated hydrogen storage amount was measured for each cycle. The results are shown in FIG. In this example, the deterioration in the hydrogen storage properties is much smaller in the present example shown in "L" than in the comparative example shown in "L". In addition, the comparative example is M without PT coating.
mNi4.5AI (using 1,5 alloy).
第１図は実施例１における飽和吸蔵水素量（ｄ／ｆ）と
サイクル数（回）との関係を表わすグラフ、第２図は実
施例２における飽和吸蔵水素量（Ｍｌ／ｆ）とサイクル
数（回）の関係を表わすグラフである。Fig. 1 is a graph showing the relationship between the saturated hydrogen storage amount (d/f) and the number of cycles (times) in Example 1, and Fig. 2 is a graph showing the relationship between the saturated storage hydrogen amount (Ml/f) and the cycle number in Example 2. It is a graph showing the relationship between (times).
Claims (1)
被覆したことを特徴とする水素吸蔵材料A hydrogen storage material characterized by coating the surface of a hydrogen storage alloy with a highly stable metal or alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15373084A JPS6130682A (en) | 1984-07-23 | 1984-07-23 | Hydrogen occluding material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15373084A JPS6130682A (en) | 1984-07-23 | 1984-07-23 | Hydrogen occluding material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6130682A true JPS6130682A (en) | 1986-02-12 |
Family
ID=15568839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15373084A Withdrawn JPS6130682A (en) | 1984-07-23 | 1984-07-23 | Hydrogen occluding material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6130682A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55167101A (en) * | 1979-06-15 | 1980-12-26 | Matsushita Electric Ind Co Ltd | Hydrogen storing material and its manufacture |
| JPS581032A (en) * | 1981-06-27 | 1983-01-06 | Nippon Steel Corp | Production of hydrogen absorbing metallic material |
-
1984
- 1984-07-23 JP JP15373084A patent/JPS6130682A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55167101A (en) * | 1979-06-15 | 1980-12-26 | Matsushita Electric Ind Co Ltd | Hydrogen storing material and its manufacture |
| JPS581032A (en) * | 1981-06-27 | 1983-01-06 | Nippon Steel Corp | Production of hydrogen absorbing metallic material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |