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一个碳捕获和利用过程,从大气中的CO2中生产固体碳材料 - - 第二部分:碳特性

Neele Uhlenbruck¹, Benjamin Dietrich², Stefan Heißler³

¹Institute for Thermal Energy Technology and Safety, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.

|October 18, 2024

概括

本研究详细介绍了一种新的碳捕获和利用过程,将二氧化碳转化为固体碳. 研究人员分析了碳产品的特性,识别了在甲热解过程中形成的薄片,烟尘和洋.

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.
环境科学环境科学

背景情况:

开发高效的碳捕获和利用 (CCU) 技术对于缓解气候变化至关重要.
之前的工作建立了一个新的CCU工艺,结合了直接捕获空气 (DAC) 和催化甲,然后是甲热解.
了解固体碳产品的特性对于优化CCU流程至关重要.

研究的目的:

通过一种新的CCU工艺产生的固体碳产品的特征.
为了研究热解温度和甲化气体成分对碳产品形态学的影响.
为了阐明不同固体碳结构在液体锡填充反应堆中的形成机制.

主要方法:

从含有不同杂质 (N2,H2,CO2) 的甲中通过甲热解合成碳粉.
使用扫描电子显微镜 (SEM),传输电子显微镜 (TEM),拉曼光谱,X射线光电子光谱 (XPS) 和X射线衍射 (XRD) 进行固体碳产品的表征.
对热解温度和气体混合物成分对产品特性影响的分析.

主要成果:

确定了三个主要的固体碳产品:非常薄的,无序的碳片;烟尘聚合物;和大型碳洋.
证明热解温度和气体混合物的组成显著影响碳产品的类型和形态.
提供了关于液体金属热解反应堆内这些碳结构的形成机制的见解.

结论:

新的CCU工艺成功地将甲转化为各种固体碳材料.
对合成条件的控制,特别是温度和气体杂质的控制,允许量身定制碳产品的特性.
该研究有助于了解碳利用的基于液体金属的热解系统中固体碳的形成.

关键词:

二氧化碳利用率的使用情况碳碳碳碳碳碳碳储存是碳的储存方式.液体金属是一种液体金属.甲的热解是甲的热解.

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