Enhanced hydrogen reaction kinetics of nanostructured Mg-based composites with nanoparticle metal catalysts dispersed on supports

详细信息	查看全文 | 推荐本文 |

• 作者：Yeong Yoo ; Mark Tuck ; Rajender Kondakindi ; Chan-Yeol Seo ; Zahir Dehouche ; Khaled Belkacemi
• 关键词：Hydrogen storage materials ; Polyol method ; Ni/Pd nanoparticle catalyst ; Magnesium hydride ; Proton conductive ceramic catalyst
• 刊名：Journal of Alloys and Compounds
• 出版年：2007
• 期刊代码：45_09258388
• 类别：ms
• 出版时间：31 October 2007
• 卷：446-447
• 期：Complete
• 页码：84-89
• 文件大小：1067 K

摘要

Hydrogen reaction kinetics of nanocrystalline MgH₂ co-catalyzed with Ba₃(Ca_1+xNb_2−x)O_9−δ (BCN) proton conductive ceramics and nanoparticle bimetallic catalyst of Ni/Pd dispersed on single wall carbon nanotubes (SWNTs) support has been investigated. The nanoparticle bimetallic catalysts of Ni/Pd supported by SWNTs were synthesized based on a novel polyol method using NiCl₂·6H₂O, PdCl₂, NaOH and ethylene glycol (EG). The nanostructured Mg composites co-catalyzed with BCN and bimetallic supported catalysts exhibited stable hydrogen desorption capacity of 6.3–6.7 wt.%H₂ and the significant enhancement of hydrogen desorption kinetics at 230–300 °C in comparison to either non-catalyzed MgH₂ or the nanocomposite of MgH₂ catalyzed with BCN.