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通过热形态变异的表面导管进行空间定向的热解

Chuanshen Du¹, Paul Gregory¹, Dhanush U Jamadgni^2,1

¹Materials Science and Engineering, Iowa State University, Ames, IA, 50011, USA.

Angewandte Chemie (International ed. in English)

|July 19, 2023

概括

研究人员通过将热解与质量运输相结合来控制燃烧,从而实现空间点火和切换到热解. 这种方法可以产生具有特定性能的可调节碳纤维,包括磁性或含氧化物材料.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
燃烧科学燃烧科学

背景情况:

燃烧反应很难在空间上控制,往往导致失控反应.
现有的方法缺乏对反应动力学和空间进展的精确控制.

研究的目的:

开发一种用于空间定向点火和控制燃烧-热解转换的方法.
制造具有可调节性质的功能化碳纤维.

主要方法:

与质量运输和反应速率 (达姆科勒数) 合热溶性化学转化.
在纤维素纤维和受控的热解上将基基接.
使用SiO2进行表面修饰以控制火焰传播.
包含添加剂 (MnCl2或KCl) 来调节热解.

主要成果:

通过从燃烧到热解的切换实现了空间定向点火.
证明了"表面然后核心"的点火顺序和受控的燃烧速度.
通过内外热降解制造的石墨管.
创建了磁性,磁性和含氧化物碳纤维,具有可调节的壁厚.
从适当尺寸的纤维制造的nm和μm直径的管子.

结论:

开发的方法提供了对点火和热解的精确控制,使得制造先进的碳材料成为可能.
该方法允许创建具有定制磁性和结构性质的功能化碳纤维.
该技术可扩展,用于生产不同直径的碳管.

关键词:

碳管碳管碳管定向热解是一种指导性热解.表面的形态变化表面反应表面反应热降解热降解热降解

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