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磁性过渡金属空心纳米球的合成及其催化氨硼烷水解产氢
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摘要
由于天然气、石油和煤持续减少,可再生能源的重要性不断增加。氢气由于它的清洁、环保、和高热值被认为是最好的替代能源之一。在工业上,实现氢的安全存储和释放是最具挑战性的技术之一,迄今为止,为了开发有效的储氢材料满足氢燃料电池和其他氢能源系统,已经做了大量的研究[1]。由于氨硼烷具有高的储氢容量,高稳定性,低成本等优势,氨硼烷一直被视为最有前途的化学储氢材料之一。氨硼烷产氢主要通过两种方式,水解和热分解。在合适的催化剂条件下,氨硼烷在室温下很容易水解释放氢气[2]。在所有的催化剂中,铂的催化性能相对较好,但由于其昂贵的价格,限制了其作为催化剂催化氨硼烷的发展。而钴、镍等过渡金属的成本相对较低,且资源丰富。因此,相当多的科研工作者致力于研究和开发新型纳米过渡金属基催化剂[3]。本研究中,我们通过溶剂热方法合成了几种过渡金属基空心纳米球,并研究了其对氨硼烷水解产氢的催化性能。
Due to the limited natural gas,oil and coal continue to decrease,the importance of renewable energy is increasing.Hydrogen is considered to be one of the best alternative energy sources,because its clean and environmentally friendly features and high energy content.To achieve secure storage and effective release of hydrogen is one of the most challenging technologies in the commercial use of hydrogen energy.Among the chemical hydrogen storage material,ammonia borane has been considered one of the most promising candidates for its high hydrogen storage capacity,high stability,low relative cost advantages and.Under conditions of a suitable catalyst,ammonia borane can be easily hydrolyzed and release of hydrogen at room temperature.In all of the catalysts,the transition metal,such as cobalt,nickel based one is promising in the future,considerable attention and research have been focused on developing a novel these transition metal-based catalyst.In this work,we successfully synthesized some transition metal-based nanospheres,and investigated their catalytic activity for hydrolysis of ammonia borane.
引文
[1]Yang L,Luo W,Cheng G.ACS Appl.Mat.Interfaces,2013,5(16):8231-8240.
    [2]Xiong Z,Yong C K,Wu G,et al.Nature Mater.,2008,7(2):138-141.
    [3]Shi Z Q,Jiao L X,Sun J,et al.RSC Adv,2014,4(1):47-53.

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