纳米碳纤维的微观结构调控与催化作用

doi:10.3969/j.issn.0438-1157.2014.01.003

化工学报 ›› 2014, Vol. 65 ›› Issue (1): 22-31.DOI: 10.3969/j.issn.0438-1157.2014.01.003

纳米碳纤维的微观结构调控与催化作用

隋志军¹, 李平¹, 周静红¹, 朱贻安¹, De Chen², 周兴贵¹

1 华东理工大学化学工程联合国家重点实验室, 上海 200237;
2 挪威科技大学化学工程系, 挪威特隆德霍姆N-7491

收稿日期:2013-06-27 修回日期:2013-08-23 出版日期:2014-01-05 发布日期:2014-01-05
通讯作者: 周兴贵
作者简介:隋志军（1974-），男，博士，副教授。
基金资助:
国家重点基础研究发展计划项目（2012CB720500）；国家自然科学基金项目（21106047，21276077）。

Manipulating microstructural properties of carbon nanofibers and their applications in catalysis

SUI Zhijun¹, LI Ping¹, ZHOU Jinghong¹, ZHU Yi'an¹, De Chen², ZHOU Xinggui¹

1 State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
2 Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), N-7491 Trondheim, Norway

Received:2013-06-27 Revised:2013-08-23 Online:2014-01-05 Published:2014-01-05
Supported by:
supported by the National Basic Research Program of China (2012CB720500) and the National Natural Science Foundation of China(21106047, 21276077).

摘要/Abstract

摘要： 纳米碳纤维（CNF）是一种新型一维结构纳米炭材料，因其具有许多独特的性质而备受研究者关注。按照CNF基本结构单元石墨片层与生长轴的夹角不同，可以将CNF分为板式、鱼骨式和管式3种不同微观结构。采用催化化学气相沉积法合成CNF时，微观结构可以通过改变生长动力学进行调控。CNF微观结构的不同导致表面棱边与基面原子比例不同，进而影响着表面含氧基团分布等性质。当CNF用作催化剂载体时，利用这些性质的不同可以调控负载金属颗粒的形貌以及载体与金属作用力等性质，从而改变催化剂的性能。CNF自身具有催化活性，其活性主要来自表面杂原子基团，因此也与CNF的微观结构密切相关。

关键词: 纳米碳纤维, 微观结构, 催化剂, 成型, 载体

Abstract: As a new category of carbonaceous material, carbon nanofiber (CNF) has been extensively studied due to its unique characteristics. CNF is usually classified according to the angle between fiber axis and graphene sheets, that is, platelet, fishbone and tubular CNF. CNF with different microstructures could be synthesized by adjusting the preparation methods. For catalytic chemical vapor deposition method, the structural properties of the as-synthesized CNF are kinetically controlled. The differences of the structure properties of CNF with different microstructures would lead to different ratios of edge/basal atoms and consequently distributions of surface oxygen complex, wettability and other properties. When using CNF as catalyst support, morphologies, particle size distribution, interaction between the CNF support and metal particles and crystal plane orientation could be manipulated, leading to different catalytic performance. CNF has its own catalytic activities as verified by oxidative dehydrogenation of alkanes as solid base catalyst. The activities originate from the existence of heteroatoms on CNF surface, e.g., surface oxygen complexes and doped N. Since the chemistry of CNF surface depends on its microstructure, the great influence of structure properties on their catalytic performance has been evidenced in many researches. CNF with macroscopic shaping could be prepared through several methods. The characteristics of fluid dynamics of a CNF/graphite felt is also reviewed.

Key words: carbon nanofiber, microstructure, catalyst, shaping, support

中图分类号:

TQ343.8

隋志军, 李平, 周静红, 朱贻安, De Chen, 周兴贵. 纳米碳纤维的微观结构调控与催化作用[J]. 化工学报, 2014, 65(1): 22-31.

SUI Zhijun, LI Ping, ZHOU Jinghong, ZHU Yi'an, De Chen, ZHOU Xinggui. Manipulating microstructural properties of carbon nanofibers and their applications in catalysis[J]. CIESC Journal, 2014, 65(1): 22-31.

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纳米碳纤维的微观结构调控与催化作用

Manipulating microstructural properties of carbon nanofibers and their applications in catalysis

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