Mechanism of the Formation of Nano-Pore Structure in Wood Charcoal

木炭纳米孔结构的形成机制

基本信息

批准号：
13460078
负责人：
IMAMURA Yuji
金额：
$ 5.57万
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：
2001
资助国家：
日本
起止时间：
2001 至 2003
项目状态：
已结题

项目摘要

The physical properties and functions of carbon materials are assumed to be originated from the ultra-structure and. surface chemical structure. Nano-pore structure formed as the aggregation of carbon-stacking planes in the wood cell walls, are strongly expected to contribute to the functions of carbon materials such as adsorption or desorption. The visualia.tion of the nano-pore structure and the evaluation on its formation process are highly required to develop the new functions of wood charcoal.The.observatory studies by transmission electron microscope demonstrated that the ultra-structure of wood charcoal in the initial stage of carbonization was consisted of the mixture of amorphous, porous shell-like and well-aligned carbon-stacking planes. The pore-structure of wood charcoal carbonized at 600ーC was shown to represent the micro pores below mm mainly consisting of the amorphous carbon planes. On the other hand, the amorphous, porous shell-like and well-aligned carbon-stacking planes have developed in wood charcoal carbonized at 700 to 800℃.These results showed that the effects of the cell wall structure and chemical composition on the carbonization process of wood charcoal. should be evaluated for the development of the efficient utilization of these carbon materials. The effectiveness of the direct observation by transmission electron microscope was demonstrated for the design of the new functional materials. In the process of the. study, the new research fields have been developed such as carbonization of wood charcoal at high temperature by Al-triisopropoxide, Si/C composite materials from wood charcoal by a pulse sintering method and graphitization of biomass carbon.

假定碳材料的物理特性和功能来自超结构。表面化学结构。纳米孔结构形成是木质细胞壁中碳堆积平面的聚集，强烈期望有助于碳材料的功能，例如吸附或解吸。纳米孔结构的视觉及其形成过程的评估是高度需要的。显示在600-C处的木木炭的孔结构表示，代表了低于MM的微孔，主要由无定形碳平面组成。另一方面，在木炭木炭中开发了700至800℃的木炭中开发的无定形，多孔壳状和良好的碳堆积平面。这些结果表明，细胞壁结构和化学成分对木炭碳化过程的影响。应评估这些碳材料有效利用的开发。为新功能材料设计，证明了传输电子显微镜直接观察的有效性。在。研究，新的研究领域是开发的，例如通过抗氧化二异丙氧化物在高温下在高温下碳化的碳化，Si/c复合材料通过脉冲烧结方法和生物量碳的图形来碳化。