PAN-Based Pd-doped Activated Carbon Fibers for Hydrogen Storage: Preparation, A new Method for Chemical Activation and Characterization of Fibers

Year 2008, Volume: 36 Issue: 3, 247 - 253, 01.08.2008

Serkan Baş Özgül Hakli Ahu Gümrah Dumanlı Yuda Yürüm

Abstract

The preparation of ACFs from PAN fibers under various conditions and the method to load Pd on ACFs weredescribed. Chemical activation of the fibers increased the surface areas of the fibers from about 64 m2/g to 381 m2/g.SEM micrographs of Pd-loaded indicated the diameters of the fibers were in the range of 1.0-10.0 mm. Diameters ofmetallic Pd particles on the fibers changed between 80 nm and 100 nm. 4.5% by wt metallic palladium was depositedon the ACFs. This high percentage of palladium deposited on ACFs is useful for hydrogen storage, since Pd-H systemis established under a wide range of pressure and temperature

Keywords

Polyacrylonitrile fibers , activated carbon fibers , BET surface area , Scanning electron microscopy

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