Evolution of microtexture in furan resin-derived carbon with heat-treatment

✍ Scribed by Sei-Min Park; Eiichi Yasuda; Takashi Akatsu; Yasuhiro Tanabe; Masato Kakihana; Kazuhiro Ozawa

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 465 KB
• Volume: 33
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(95)00082-o

✦ Synopsis

Microtextural evolution in furan resin-derived carbon was investigated.

The evolution was mainly studied from the viewpoint of the change in microtexture of surface and internal pores with heattreatment and was characterized by observation with a scanning electron microscope, measurement of the BET surface area, X-ray diffraction and Raman spectroscopy.

Microporous layers, about 60 pm thick, were formed on the surface during carbonization at 1000°C when furan resin was polymerized in ambient air. The layer partially changed into graphite with a small surface area after heat-treatment at 26Oo"C, the inside remaining amorphous.

The microporous layer was easily rearranged to form a graphite layer, compared to the inside. The carbons that existed in the internal closed pore during heat-treatment at 1000°C changed into turbostratic carbon by heat-treatment at 2600°C. The texture resulted from mass transport through gas phase during the heat-treatment.