Synthesis of hydrogen absorbing alloy in nanocarbons and evaluation of their properties for hydrogen absorption and separation

纳米碳吸氢合金的合成及其吸氢分离性能评价

• 批准号: 21360394
• 负责人: SANO Noriaki
• 金额: $ 11.48万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21360394/
• 关键词: カーボンナノホーン; カーボンナノチューブ; アーク放電; 水素吸蔵; 吸着; エネルギー変換プロセス; ナノカーボン; 水素吸蔵合金

The high pressure absorption of H2 by single-walled carbon nanohorns including Pd-Ni alloy nanoparticles prepared by a gas-injected arc-in-water method was measured by a magnetic suspension balance. It was found that the amount of H2 absorbed by Pd-Ni alloy particles in Pd-Ni/SWCNHs was significantly larger than that absorbed by ordinal Pd-Ni alloys and pure-carbon SWCNHs of the equivalent mass. It can be speculated that this large amount of H2 absorbed by Pd-Ni/SWCNHs is due to spill-over effect of H2 by which H2 is catalytically dissociated at the alloy surfaces, and the dissociative H would diffuse through the carbonaceous part of SWNHs to reach the Pd-Ni nanoparticles dispersing therein. Some portion of dissociative H would remain in carbonaceous parts. A mild oxidation treatment was conducted on Pd-Ni/SWCHs in O2 at 350 oC to generate micropore channels in the carbonaceous parts of Pd-Ni/SWCHs, resulting that the H2 absorption rate was drastically enhanced.

利用磁悬浮天平测量了采用注气水弧法制备的含钯镍合金纳米颗粒的单壁碳纳米角的高压吸氢性能。结果表明，Pd-Ni/SWCNHs中Pd-Ni合金颗粒的吸氢量明显大于同等质量的普通Pd-Ni合金和纯碳SWCNHs的吸氢量。可以推测，Pd-Ni/SWCNHs大量吸附H2是由于H2的溢出效应，H2通过溢出效应在合金表面催化解离，并且解离的H将通过SWCNHs的碳质部分扩散到分散在其中的Pd-Ni纳米颗粒。一部分游离氢会留在碳质部分。Pd-Ni/SWCHs在350 oC的氧气中进行温和氧化处理，使其碳质部分产生了氧化沟道，从而显著提高了H2的吸收速率。

项目成果

Synthesis of carbon nanomaterials produced by vaporization of graphite in liquid using arc plasma

利用电弧等离子体在液体中气化石墨制备碳纳米材料

• 发表时间: 2009
• 作者: N.Sano;C.Poonjarernsilp;T.Charinpanitkul;H.Tamon
• 通讯作者: H.Tamon

Influence of arc duration time on the synthesis of carbon nanohorns by a gas-injected arc-in-water system: application to polymer electrolyte fuel cell electrodes

• DOI: 10.1088/0963-0252/20/3/034002
• 发表时间: 2011-06
• 期刊: Plasma Sources Science and Technology
• 影响因子: 3.8
• 作者: N. Sano;Tatsuo Suzuki;K. Hirano;Y. Akita;H. Tamon

液体中アーク放電を用いたカーボンナノ材料の合成

液体中电弧放电合成碳纳米材料

• 发表时间: 2010
• 期刊: 高温学会誌
• 作者: 大桑;岩崎;浅本;山口;八尋;佐野紀彰
• 通讯作者: 佐野紀彰

カーボンナノホーンの水中アーク放電を用いた合成およびメタン吸着特性に及ぼす反応条件の影響

水下电弧放电合成碳纳米角及反应条件对甲烷吸附性能的影响

• 发表时间: 2010
• 作者: 佐野紀彰;秋田喜弘;田門肇
• 通讯作者: 田門肇

ガス導入水中アークプラズマ法によるカーボンナノホーン合成とメタン吸蔵材料への応用

气体引入水下电弧等离子体法合成碳纳米角及其在甲烷储存材料中的应用

• 发表时间: 2010
• 作者: 佐野紀彰;秋田喜弘;田門肇
• 通讯作者: 田門肇