标题:Transition metal nanoparticles supported La-promoted MgO as catalysts for hydrogen production via catalytic decomposition of ammonia
作者:Hu, Xiu-Cui ;Wang, Wei-Wei ;Jin, Zhao ;Wang, Xu ;Si, Rui ;Jia, Chun-Jiang
作者机构:[Hu, X.-C] Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engine 更多
通讯作者:Wang, WeiWei
通讯作者地址:[Wang, W.-W] Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engi 更多
来源:Journal of Energy Chemistry
出版年:2019
页码:41-49
DOI:10.1016/j.jechem.2018.12.024
关键词:Ammonia decomposition; High activity; Hydrogen; Lanthanum; MgO support; Transition metal nanoparticles
摘要:The uniformly dispersed transition metal (Co, Ni and Fe) nanoparticles supported on the surface of La-promoted MgO were prepared via a deposition-precipitation method for hydrogen production from catalytic decomposition of ammonia. X-ray diffraction, N 2 adsorption-desorption, transmission electron microscopy, temperature-programmed reduction and temperature-programmed desorption were used to investigate the structure-activity relation of catalysts in NH 3 decomposition. The results show that the strong interaction between active species and support can effectively prevent the active species from agglomerating during ammonia decomposition reaction. In addition, the introduction of La species not only facilitates the adsorption and decomposition of NH 3 and desorption of N 2 , but also benefits the better dispersion of the active species. The prepared catalysts showed very high catalytic activity for ammonia decomposition compared with the same active composition samples that reported previously. Meanwhile, the catalysts showed excellent high-temperature stability and no any deactivation was observed, which are very promising candidates for the decomposition of ammonia to hydrogen. © 2019 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences
收录类别:EI;SCOPUS
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85060101105&doi=10.1016%2fj.jechem.2018.12.024&partnerID=40&md5=96ead26af243671f658f01ae33fddc6b
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