| 标题 |
Valorization of Lignin Waste: Carbons from Hydrothermal Carbonization of Renewable Lignin as Superior Sorbents for CO2 and Hydrogen Storage 木质素废物的价值化:可再生木质素水热碳化产生的碳作为CO2和氢储存的优良吸附剂
相关领域
水热碳化
木质素
碳化
微型多孔材料
化学工程
碳纤维
纤维素
比表面积
材料科学
化学
生物量(生态学)
打赌理论
有机化学
吸附
复合数
催化作用
复合材料
海洋学
地质学
工程类
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| 其它 | This report presents the preparation of renewable carbons from hydrothermally carbonized lignin waste. The hydrothermally carbonized mineral-free lignin-derived hydrochar was activated with KOH to yield carbons with surface area of 1157–3235 m2 g–1 and pore volume of 0.59–1.77 cm3 g–1. Activation at KOH/carbon = 2, generates highly microporous carbons (≥97% micropore surface area and 93% micropore volume), which exhibit excellent CO2 uptake capacity; up to 4.6 mmol g–1 at 1 bar and 25 °C, and 17.3 mmol g–1 at 20 bar and 25 °C, whereas at 0 °C and 1 bar, they store up to 7.4 mmol g–1. Activation at KOH/carbon = 4 can generate carbons with surface area and pore volume of up to 3235 m2 g–1 and 1.77 cm3 g–1, respectively, which have hydrogen uptake of up to 6.2 wt % at −196 °C and 20 bar. |
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