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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Role of Hydrochar Properties on the Porosity of Hydrochar-based Porous Carbon for Their Sustainable Application
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Role of Hydrochar Properties on the Porosity of Hydrochar-based Porous Carbon for Their Sustainable Application

机译：炭的性质对基于炭的多孔碳孔隙率及其可持续应用的作用

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摘要

In recent years, chemical activation of hydrochar (a solid material from hydrothermal carbonization (HTC) of lignocellulosic biomass) has been shown to be effective in producing advanced porous materials. However, the linkage between the properties of hydrochar and the porosity of hydrochar-based porous carbon (a material from the chemical activation of hydrochar) has not yet been clearly explored. In the present study, the results indicated that the properties of hydrochar (including stability, thermal recalcitrance, aromaticity and polarity) were greatly affected by the HTC process (peak temperature and retention time). Accordingly, the porosities of hydrochar-based porous carbon (including surface area and pore volume) were determined by the properties of hydrochar. For instance, positive correlations were founded between porosities of porous carbon materials and element compositions (H/C, O/C, and (O+N)/C) of hydrochar materials. Moreover, negative correlations were observed between the porosities of porous carbon materials and thermal recalcitrance of hydrochar materials. In general, a porous carbon with high porosity was produced from a hydrochar with HTC process of low peak temperature and retention time. Undoubtedly, hydrochar-based porous carbons retain features characteristic of its parent material.
机译：近年来，已显示出对水焦油（木质纤维素生物质的水热碳化（HTC）产生的固体材料）的化学活化可有效地生产高级多孔材料。但是，尚未明确探究烃的性质与基于烃的多孔碳（由烃的化学活化产生的材料）的孔隙率之间的联系。在本研究中，结果表明HTC过程（峰值温度和保留时间）极大地影响了水焦的性质（包括稳定性，抗热性，芳香性和极性）。因此，通过炭的性质来确定基于炭的多孔碳的孔隙率（包括表面积和孔体积）。例如，在多孔碳材料的孔隙率与水炭材料的元素组成（H / C，O / C和（O + N）/ C）之间建立了正相关。此外，在多孔碳材料的孔隙率和水焦炭材料的热阻性之间观察到负相关。通常，具有高孔隙率的多孔碳是由具有较低峰值温度和保留时间的HTC工艺的水煤油制得的。毫无疑问，水碳基多孔碳保留了其母体材料的特征。

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