吸附
残留物(化学)
氮气
化学
活性炭
化学工程
有机化学
工程类
作者
Wen-tao Li,Ting Huang,Wan-zhao Huang,Lijuan Gao,Kai Li,Qi Niu,Jihong Li,Qiang Lü
标识
DOI:10.1016/j.indcrop.2024.118097
摘要
An efficient strategy for the resourcezation of waste bio-oil residue was developed to fabricate nitrogen-doped activated carbon (NAC) as CO2 adsorbent. The NAC was produced by in-situ nitrogen-doped carbonization and K2CO3 activation, using urea as nitrogen source. The effects of activation temperature, mass ratios of urea to bio-oil residue (U/O ratio) and K2CO3 to char (K/C ratio) on the physicochemical properties and CO2 adsorption performance of NAC were investigated. Under the conditions of activation temperature of 750 °C, U/O ratio of 1 and K/C ratio of 3, the as-prepared NAC exhibited the greatest CO2 adsorption performance with an excellent CO2 adsorption capacity of 6.22 mmol/g at 1 bar and 0 °C, which was much higher than that without nitrogen doping (2.21 mmol/g). In addition, the CO2/N2 selectivity of NAC was 14.3 and the adsorption capacity loss was below 1% after 5 consecutive cycles, revealing promising potentials in carbon capture applications.
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