Comparison between carbonization of wood charcoal with Al-triisopropoxide and alumina

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• 作者：Paul Bronsveld ; Toshimitsu Hata ; Tomas Vystavel ; Jeff DeHosson ; Hikari Kikuchi ; Koei Nishimiya and Yuji Imamura
• 关键词：Graphitisation ; Sintering
• 刊名：Journal of the European Ceramic Society
• 出版年：2006
• 期刊代码：53_09552219
• 类别：ms
• 出版时间：2006
• 卷：26
• 期：4-5
• 页码：719-723
• 文件大小：395 K

摘要

A comparison was made between the catalytic carbonization of biomass carbon suspended in Al-triisopropoxide and in biomass carbon mixed with 40 μm sized Al₂O₃ particles. Both types of samples were plasma sintered during 5 min under an argon pressure of 50 MPa at temperatures up to 2200 °C. Plate-like catalytic graphitization develops by formation and dissociation of plate-like Al₄C₃. Plasma sintering under the proper CO partial pressure and heat treatment temperature is instrumental in forcing the Al₂O₃ to react with the carbon, forming first Al₄C₃ and subsequently graphite. The difference between Al-triisopropoxide and Al₂O₃ is a matter of intensity of the graphite reaction versus the size of the graphite patches.