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DEVELOPMENT OF THERMAL CONVERSION TECHNOLOGY FROM WOOD CHARCOAL TO CARBON NANOTUBES

木炭热转化为碳纳米管技术的进展

基本信息

批准号：
15380119
负责人：
HATA Toshimitsu
金额：
$ 9.54万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15380119/
关键词：
wood biomass waste wood carbon nanotubes carbonized wood transmission electron microscopy aluminium triisopropoxide graphite diamond

项目摘要

The possibility of producing new carbon materials based on biomass resources and their applications as advanced carbon materials imply to be able to control their texture, microtexture, surface chemistry, and to propose experiments and processes emphasizing their characteristics. Various pretreatment methods for carbonized wood such as catalytic carbonization with Alumina, Aluminium triisopropoxide, fast pyrolysis, silicon oxide, TEOS, cupper-chromium-arsenic, have been investigated in order to form carbon nanotubes on the surface of carbonized wood.Japanese cedar, i.e. Sugi (Cryptomeria japonica), was at first carbonized in an electric furnace at 700 ℃ under N_2 flow, at 4 ℃/min heating rate, for one hour. The resulting charcoal was milled and then soaked in a 40 % isopropyl alcohol solution of Al-triisopropoxide. After drying, the specimen was carbonized in a pulse current sintering apparatus up to 1300 ℃ for 5 min. Without catalyst and after "classical" carbonization, such carbonized-wood consists in a non-graphitizing carbon with a highly porous texture. In our experiment, due to catalyst addition, the intermediate reaction of Al_2O_3 with carbon leads to the formation plate-like Al_4C_3. Then this latter compound dissociates under the proper CO pressure and temperature, leading to the formation of Al vapor and well-ordered graphitizing carbon at low temperature. The modification of the texture, microtexture and structure of such carbonized samples was followed by scanning and transmission electron microscopies and will be presented.Subsequently, on this carbonized then sintered samples, we demonstrated that growth of catalytic multiwall carbon nanotubes was possible. Experiments were performed at 650 ℃ under N_2/H_2 then N_2/C_2H_4 atmospheres. Multiwall carbon nanotubes with a diameter of about 50 nm were produced. Possible applications can be lithium ion batteries.

基于生物质资源生产新型碳材料及其作为先进碳材料的应用的可能性意味着能够控制其纹理，微观纹理，表面化学，并提出强调其特性的实验和工艺。为了在杉木表面形成碳纳米管，本文研究了氧化铝催化炭化、三异丙醇铝催化炭化、快速热解、氧化硅催化炭化、正硅酸乙酯催化炭化、铜铬砷催化炭化等杉木预处理方法柳杉（Cryptomeriajaponica）在700 ℃的电炉中，以4 ℃/min的升温速率，在N_2气流中加热1h。将所得木炭研磨，然后浸泡在三异丙醇铝的40%异丙醇溶液中。干燥后，将试样在1300 ℃的脉冲电流烧结装置中烧结5 min。在没有催化剂的情况下，经过“经典”碳化后，这种碳化木材由具有高度多孔结构的非石墨化碳组成。在本实验中，由于催化剂的加入，Al_2O_3与碳发生了中间反应，生成了片状的Al_4C_3。然后，后者化合物在适当的CO压力和温度下解离，导致在低温下形成Al蒸气和良好有序的石墨化碳。随后通过扫描和透射电子显微镜观察了这种烧结样品的织构、微观织构和结构的变化，并将在下文中介绍。随后，在这种烧结样品上，我们证明了催化性多壁碳纳米管的生长是可能的。实验在650 ℃、N_2/H_2、N_2/C_2H_4气氛下进行。制备了直径约为50 nm的多壁碳纳米管。可能的应用可以是锂离子电池。

项目成果

期刊论文数量（49）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Development of SiC/C Composite Materials from Wood Charcoal by a Pulse Current Sintering Method and Their Properties

脉冲电流烧结木炭SiC/C复合材料的研制及其性能

DOI：
发表时间：
2003
期刊：
WOOD RESEARCH 90
影响因子：
0
作者：
Fujisawa;M.;T.Hata;P.Bronsveld;V.Castro;F.Tanaka;Kikuchi;T.Furuno;Y.Imamura
通讯作者：
Y.Imamura

Catalytic Carbonization at High Temperature of Biomass Carbon by Aluminium Oxide (in Japanese)

氧化铝催化生物质炭高温炭化（日文）

DOI：
发表时间：
2003
期刊：
Proceedings of the 30th Annual Meeting of Carbon Materials 30
影响因子：
0
作者：
T.Hata;T.Vystavel;P.Bronaveld;J.DeHosson;H.Kikuchi;KoueiNishimiya;Yuji Imamura
通讯作者：
Yuji Imamura

F.Kurosaki, K.Ishimarua, T.Hata, P.Bronsveld, E.Kobayashi, Y.Imamura: "Microstructure of Wood Charcoal Prepared by Flash Heating"CARBON. 41(15). 3057-3062 (2003)

F.Kurosaki、K.Ishimarua、T.Hata、P.Bronsveld、E.Kobayashi、Y.Imamura：“快速加热制备木炭的微观结构”CARBON。