文献类型：期刊文献

英文题名：Tuning the size and shape of Fe nanoparticles on carbon nanofibers for catalytic ammonia decomposition

作者：Duan, Xuezhi[1];Qian, Gang[1];Zhou, Xinggui[1];Sui, Zhijun[1];Chen, De[2];Yuan, Weikang[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Norwegian Univ Sci & Technol, Dept Chem Engn, N-7491 Trondheim, Norway

年份：2011

卷号：101

期号：3-4

起止页码：189

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：;EI(收录号：20105113512887);WOS:【SCI-EXPANDED(收录号:WOS:000287068400004)】；

基金：This work is financially supported by the Creative Team Development Project of Ministry of Education of China (IRT0721) and the 111 Project of Ministry of Education of China (B08021). We thank Prof. Zhu Xinyuan and Tong Gangsheng of Shanghai Jiaotong University for HRTEM and EDS analysis.

语种：英文

外文关键词：Ammonia decomposition; Hydrogen generation; Iron catalyst; Carbon nanofibers; Mica

摘要：Fe nanoparticles on the top of carbon nanofibers (CNFs) were synthesized by catalytic CVD on a purpose as catalysts for ammonia decomposition. The size and shape of Fe particles on the top of CNFs depended on the Fe particle reconstruction and CNF morphology. On a mica support Fe catalyst, platelet structure of CNFs was obtained with small, uniform, and unwrapped Fe particles on the top. HRTEM illustrated that the Fe particle surface is covered by a few graphene layers, which redissolves into the Fe particle and does not prevent the access of NH3 to active surface sites at reaction conditions. The catalyst is highly active and stable because the Fe particles are highly dispersed and physically isolated by CNFs, and the surfaces are largely exposed to the reactants. (c) 2010 Elsevier B.V. All rights reserved.