文献类型：期刊文献

英文题名：Recent advances in synthesis of reshaped Fe and Ni particles at the tips of carbon nanofibers and their catalytic applications

作者：Duan, Xuezhi[1]; Ji, Jian[1]; Qian, Gang[1]; Zhou, Xinggui[1]; Chen, De[2]

机构：[1] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China; [2] Department of Chemical Engineering, Norwegian University of Science and Technology, Trondheim, 7491, Norway

年份：2015

卷号：249

起止页码：2

外文期刊名：Catalysis Today

收录：EI(收录号：20145200364614)

语种：英文

外文关键词：Ammonia - Catalyst supports - Cellulose - Nanocatalysts - Nickel - Hydrogenation

摘要：Abstract Transition metals such as Fe and Ni are the most commonly used catalysts for the growth of carbon nanofibers (CNFs) via CCVD method, and they always remain in the raw products. Much attention has been paid to purify CNFs, i.e., to remove residual metal particles and supports, before their use in most cases. However, some recent studies show that the residual metal particles usually attach at the tips of CNFs, and exhibit a different shape in comparison with the initial metal catalysts and as a result unique catalytic performance. The present review focuses on the state-of-the-art of the developments of synthesis of reshaped Fe and Ni particles at the tips of CNFs and their catalytic applications in cellulose conversion, selective hydrogenation and ammonia decomposition. In particular, effects of catalyst support, carbon source and its concentration, reaction temperature and etching gas are discussed. Moreover, the carbon adsorbates induced effect is highlighted as one of the key factors governing the reshaping of Fe and Ni particles. ? 2014 Elsevier B.V. All rights reserved.