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High yield self-nitrogen-oxygen doped hydrochar derived from microalgae carbonization in bio-oil: Properties and potential applications.
Bioresource Technology ( IF 9.7 ) Pub Date : 2020-06-24 , DOI: 10.1016/j.biortech.2020.123735
Enchen Jiang 1 , Shuchao Cheng 1 , Ren Tu 1 , Zhen He 1 , Zhiwen Jia 1 , Xuantian Long 1 , Yujian Wu 1 , Yan Sun 1 , Xiwei Xu 1
Affiliation  

In this work, the high yield self-N-O doped hydrochar had been prepared through the hydrothermal carbonization of microalgae in the aqueous bio-oil. The effects of temperature, residence time and the ratio of Chlorella and bio-oil on the solid yield were investigated. The results showed that the hydrochar had excellent thermal stability and abundant nitrogen and oxide functional groups, its solid yield reached 199.33%. After activated by KOH at high temperature, the hydrochar was transformed into a porous carbon material with high nitrogen content. The porous carbon showed high CO2 absorption of 5.57 mmol/g at 0 °C and 1 bar. It also exhibited a high specific capacitance of 216.6F/g at 0.2 A/g and a good electrochemical stability with 88% capacitance retention after consecutive 5000 cycles.



中文翻译:

生物油中微藻碳化产生的高产自掺氮氧碳氢化合物:性质和潜在应用。

在这项工作中,通过在含水生物油中对微藻进行水热碳化,制备了高产自掺NO的炭。研究了温度,停留时间以及小球藻与生物油的比例对固体收率的影响。结果表明,该水焦具有良好的热稳定性,并具有丰富的氮,氧化物官能团,固含量可达199.33%。在高温下用KOH活化后,将烃类转化为高氮含量的多孔碳材料。多孔碳显示出高的CO 2在0°C和1 bar下的吸光度为5.57 mmol / g。在连续的5000次循环后,它在0.2 A / g时还表现出216.6F / g的高比电容和良好的电化学稳定性以及88%的电容保持率。

更新日期:2020-06-30
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