文献类型：期刊文献

英文题名：Morphology and location manipulation of Fe nanoparticles on carbon nanofibers as catalysts for ammonia decomposition to generate hydrogen

作者：Ji, Jian[1]; Yan, Xiaodong[1]; Qian, Gang[1]; Peng, Chong[1]; Duan, Xuezhi[1]; Zhou, Xinggui[1]

机构：[1] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China

年份：2017

卷号：42

期号：27

起止页码：17466

外文期刊名：International Journal of Hydrogen Energy

收录：EI(收录号：20171803623897)

语种：英文

外文关键词：Catalyst activity - Ammonia - Carbon nanofibers - Morphology - Synthesis (chemical) - Nanocatalysts - Chemical vapor deposition - Nanoparticles

摘要：Ammonia decomposition over Fe-based catalysts is a typical structure sensitive reaction, and the shape-controlled synthesis of Fe nanoparticles based on catalytic chemical vapor deposition (CCVD) method appears to be an effective method toward enhanced catalytic activity. The objective of this work is to understand effects of the reaction parameters on structural and textural properties of the resultant Fe catalysts and thus catalytic ammonia decomposition performance. The as-obtained catalysts are characterized by multiple techniques (N2 physisorption, XRD, SEM, TEM, and Raman spectroscopy). Both the morphology and location of Fe nanoparticles are found to strongly depend on the partial pressure of H2 as well as the growth time of CNFs. The long polyhedron shaped Fe nanoparticles on CNFs exhibit the highest activity among the prepared catalysts, which are relatively higher than the activities of the reported Fe based catalysts. The possible explanation for the good catalytic performance was proposed. ? 2017 Hydrogen Energy Publications LLC