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Citation: ZHOU Jing-Hong, HAN Wei-Wei, SUI Zhi-Jun, GUO Rong, FANG Xiang-Chen, ZHOU Xing-Gui. Preparation and Characterization of Tri-Lobular Alumina/Carbon Nanofiber Composites[J]. Acta Physico-Chimica Sinica, ;2009, 25(07): 1455-1460. doi: 10.3866/PKU.WHXB20090737 shu

Preparation and Characterization of Tri-Lobular Alumina/Carbon Nanofiber Composites

1.
State Key Laboratory of Chemical Engineering, East China University of Science &

Received Date: 9 December 2008
Available Online: 18 May 2009

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.
- Alumina,
- Carbon nanofiber,
- Composite,
- In-situ growth,
- Specific surface area,
- Mechanic property
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