文献类型：期刊文献

中文题名：一种三叶草型氧化铝/碳纳米纤维复合材料的制备及表征

英文题名：Preparation and Characterization of Tri-Lobular Alumina/Carbon Nanofiber Composites

作者：周静红[1];韩伟伟[1];隋志军[1];郭蓉[1,2];方向晨[1,2];周兴贵[1]

机构：[1]华东理工大学化学工程联合国家重点实验室,上海200237;[2]中国石油化工股份有限公司抚顺石油化工研究院,辽宁抚顺113001

年份：2009

卷号：25

期号：7

起止页码：1455

中文期刊名：物理化学学报

外文期刊名：Acta Physico-Chimica Sinica

收录：CSTPCD;;Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000268081000036)】；北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；PubMed;

基金：The project was supported by the National Natural Science Foundation of China (20776041) and Creative Team Development Project of the Ministry of Education of China (IRT0721).

语种：中文

中文关键词：氧化铝;纳米碳纤维;复合材料;原位生长;比表面积;机械强度

外文关键词：Alumina; Carbon nanofiber; Composite; In-situ growth; Specific surface area; Mechanic property

摘要：采用催化化学气相沉积法,以Ni为催化剂、乙烯作为碳源,制备了三叶草型氧化铝/碳纳米纤维复合材料,并通过N2物理吸附、扫描电子显微镜、X射线衍射分析和强度测试对氧化铝/碳纳米纤维复合材料的形貌和物理性能进行了表征.结果表明,三叶草型氧化铝表面生长了碳纳米纤维层,两者紧密结合,形成的氧化铝/碳纳米纤维复合材料具有较高的比表面积(>187m2·g-1)和孔体积(>0.24cm3·g-1),孔道直径在3-10nm的孔体积超过总孔体积的85%,颗粒的侧压强度大于6N·mm-1,可以满足工业催化剂载体对强度的要求.复合材料是一种有良好的工业应用前景的中孔催化材料,其中碳纳米纤维层的厚度可通过催化剂Ni负载量和生长时间的调节加以控制.
A carbon nanofiber （CNF） covered alumina composite of tri-lobular shape was synthesized by catalytic chemical vapor deposition using Ni as catalyst and ethylene as carbon source. Its morphology and microstructure, textural and mechanical properties, and crystallinity were investigated using N2 physisorption, scanning electron microscopy, particle crushing strength measurement and X-ray diffraction. It was shown that the CNFs grown on the surface of the tri-lobular granule alumina had a high degree of graphitization, and the alumina substrate and the CNF layer were combined into a composite, which had a mesoporous structure and a surface area larger than 187 m2 .g-1. The pore volume of the composite was larger than 0.24 cm3. g-1 and more than 85% of the pore volume corresponded to a pore size range between 3 and 10 nm. The side crushing strength of the composite satisfied the requirements for industrial catalyst supports. Therefore, the composite is very promising for industrial application.